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/vmt-chc-benchmarks/cav12/s3_srvr_14.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 00:04:34,343 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 00:04:34,346 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 00:04:34,359 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 00:04:34,359 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 00:04:34,360 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 00:04:34,361 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 00:04:34,365 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 00:04:34,367 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 00:04:34,367 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 00:04:34,370 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 00:04:34,370 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 00:04:34,371 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 00:04:34,372 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 00:04:34,375 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 00:04:34,376 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 00:04:34,377 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 00:04:34,387 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 00:04:34,388 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 00:04:34,389 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 00:04:34,390 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 00:04:34,395 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-25 00:04:34,401 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 00:04:34,402 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 00:04:34,402 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 00:04:34,408 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 00:04:34,409 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 00:04:34,409 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 00:04:34,410 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 00:04:34,424 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 00:04:34,424 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 00:04:34,424 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 00:04:34,424 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 00:04:34,426 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 00:04:34,426 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 00:04:34,426 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 00:04:34,426 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 00:04:34,427 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 00:04:34,427 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 00:04:34,427 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 00:04:34,427 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 00:04:34,427 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 00:04:34,427 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 00:04:34,428 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 00:04:34,428 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 00:04:34,428 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 00:04:34,428 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 00:04:34,428 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 00:04:34,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 00:04:34,429 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 00:04:34,433 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 00:04:34,433 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 00:04:34,486 INFO ]: Repository-Root is: /tmp [2018-06-25 00:04:34,508 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 00:04:34,517 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 00:04:34,518 INFO ]: Initializing SmtParser... [2018-06-25 00:04:34,519 INFO ]: SmtParser initialized [2018-06-25 00:04:34,519 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_14.cil.smt2 [2018-06-25 00:04:34,521 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 [2018-06-25 00:04:34,609 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_14.cil.smt2 unknown [2018-06-25 00:04:35,125 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_14.cil.smt2 [2018-06-25 00:04:35,130 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 00:04:35,143 INFO ]: Walking toolchain with 5 elements. [2018-06-25 00:04:35,144 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 00:04:35,144 INFO ]: Initializing ChcToBoogie... [2018-06-25 00:04:35,144 INFO ]: ChcToBoogie initialized [2018-06-25 00:04:35,147 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:04:35" (1/1) ... [2018-06-25 00:04:35,212 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:04:35 Unit [2018-06-25 00:04:35,212 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 00:04:35,213 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 00:04:35,213 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 00:04:35,213 INFO ]: Boogie Preprocessor initialized [2018-06-25 00:04:35,258 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:04:35" (1/1) ... [2018-06-25 00:04:35,258 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:04:35" (1/1) ... [2018-06-25 00:04:35,279 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:04:35" (1/1) ... [2018-06-25 00:04:35,279 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:04:35" (1/1) ... [2018-06-25 00:04:35,304 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:04:35" (1/1) ... [2018-06-25 00:04:35,305 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:04:35" (1/1) ... [2018-06-25 00:04:35,317 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:04:35" (1/1) ... [2018-06-25 00:04:35,322 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 00:04:35,323 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 00:04:35,323 INFO ]: Initializing RCFGBuilder... [2018-06-25 00:04:35,323 INFO ]: RCFGBuilder initialized [2018-06-25 00:04:35,324 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:04:35" (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) [2018-06-25 00:04:35,351 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 00:04:35,352 INFO ]: Found specification of procedure gotoProc [2018-06-25 00:04:35,352 INFO ]: Found implementation of procedure gotoProc [2018-06-25 00:04:35,352 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 00:04:35,352 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 00:04:35,352 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 [2018-06-25 00:04:35,801 INFO ]: Using library mode [2018-06-25 00:04:35,802 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:04:35 BoogieIcfgContainer [2018-06-25 00:04:35,803 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 00:04:35,803 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-25 00:04:35,803 INFO ]: Initializing BlockEncodingV2... [2018-06-25 00:04:35,804 INFO ]: BlockEncodingV2 initialized [2018-06-25 00:04:35,805 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:04:35" (1/1) ... [2018-06-25 00:04:35,827 INFO ]: Initial Icfg 10 locations, 10 edges [2018-06-25 00:04:35,828 INFO ]: Using Remove infeasible edges [2018-06-25 00:04:35,829 INFO ]: Using Maximize final states [2018-06-25 00:04:35,829 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-25 00:04:35,830 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-25 00:04:35,833 INFO ]: Using Remove sink states [2018-06-25 00:04:35,834 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-25 00:04:35,834 INFO ]: Using Use SBE [2018-06-25 00:04:37,800 WARN ]: Simplifying disjunction of 10352 conjuctions. This might take some time... [2018-06-25 00:05:25,214 INFO ]: Simplified to disjunction of 10352 conjuctions. [2018-06-25 00:05:26,478 INFO ]: SBE split 1 edges [2018-06-25 00:05:26,582 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-25 00:05:26,584 INFO ]: 0 new accepting states [2018-06-25 00:05:26,648 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-25 00:05:26,651 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 00:05:26,936 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-25 00:05:26,936 INFO ]: 0 new accepting states [2018-06-25 00:05:26,937 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-25 00:05:26,938 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 00:05:27,119 INFO ]: Encoded RCFG 6 locations, 1299 edges [2018-06-25 00:05:27,119 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 12:05:27 BasicIcfg [2018-06-25 00:05:27,120 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-25 00:05:27,120 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 00:05:27,121 INFO ]: Initializing TraceAbstraction... [2018-06-25 00:05:27,125 INFO ]: TraceAbstraction initialized [2018-06-25 00:05:27,127 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:04:35" (1/4) ... [2018-06-25 00:05:27,128 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e63e1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 12:05:27, skipping insertion in model container [2018-06-25 00:05:27,128 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:04:35" (2/4) ... [2018-06-25 00:05:27,128 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e63e1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 12:05:27, skipping insertion in model container [2018-06-25 00:05:27,129 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:04:35" (3/4) ... [2018-06-25 00:05:27,129 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e63e1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 12:05:27, skipping insertion in model container [2018-06-25 00:05:27,129 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 12:05:27" (4/4) ... [2018-06-25 00:05:27,130 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-25 00:05:27,142 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 00:05:27,151 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 00:05:27,191 INFO ]: Using default assertion order modulation [2018-06-25 00:05:27,191 INFO ]: Interprodecural is true [2018-06-25 00:05:27,191 INFO ]: Hoare is false [2018-06-25 00:05:27,191 INFO ]: Compute interpolants for FPandBP [2018-06-25 00:05:27,192 INFO ]: Backedges is TWOTRACK [2018-06-25 00:05:27,192 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 00:05:27,192 INFO ]: Difference is false [2018-06-25 00:05:27,192 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 00:05:27,192 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 00:05:27,206 INFO ]: Start isEmpty. Operand 6 states. [2018-06-25 00:05:27,225 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-25 00:05:27,226 INFO ]: Found error trace [2018-06-25 00:05:27,226 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-25 00:05:27,226 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:05:27,230 INFO ]: Analyzing trace with hash 75195650, now seen corresponding path program 1 times [2018-06-25 00:05:27,231 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:05:27,231 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:05:27,265 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:05:27,265 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:05:27,265 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:05:27,338 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:05:27,465 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:05:27,469 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 00:05:27,469 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 00:05:27,471 INFO ]: Interpolant automaton has 3 states [2018-06-25 00:05:27,485 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 00:05:27,486 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 00:05:27,489 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-25 00:05:35,189 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 00:05:35,189 INFO ]: Finished difference Result 7 states and 1507 transitions. [2018-06-25 00:05:35,190 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 00:05:35,191 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-25 00:05:35,191 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 00:05:35,214 INFO ]: With dead ends: 7 [2018-06-25 00:05:35,214 INFO ]: Without dead ends: 7 [2018-06-25 00:05:35,216 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 [2018-06-25 00:05:35,238 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-25 00:05:35,280 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-25 00:05:35,282 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-25 00:05:35,288 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1507 transitions. [2018-06-25 00:05:35,290 INFO ]: Start accepts. Automaton has 7 states and 1507 transitions. Word has length 5 [2018-06-25 00:05:35,290 INFO ]: Finished accepts. word is rejected. [2018-06-25 00:05:35,290 INFO ]: Abstraction has 7 states and 1507 transitions. [2018-06-25 00:05:35,290 INFO ]: Interpolant automaton has 3 states. [2018-06-25 00:05:35,291 INFO ]: Start isEmpty. Operand 7 states and 1507 transitions. [2018-06-25 00:05:35,291 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 00:05:35,291 INFO ]: Found error trace [2018-06-25 00:05:35,292 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 00:05:35,292 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:05:35,292 INFO ]: Analyzing trace with hash -1999150506, now seen corresponding path program 1 times [2018-06-25 00:05:35,292 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:05:35,292 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:05:35,295 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:05:35,295 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:05:35,295 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:05:35,357 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:05:35,464 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:05:35,464 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 00:05:35,464 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 00:05:35,465 INFO ]: Interpolant automaton has 3 states [2018-06-25 00:05:35,466 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 00:05:35,466 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 00:05:35,466 INFO ]: Start difference. First operand 7 states and 1507 transitions. Second operand 3 states. [2018-06-25 00:05:40,311 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 00:05:40,311 INFO ]: Finished difference Result 8 states and 1509 transitions. [2018-06-25 00:05:40,387 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 00:05:40,387 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-25 00:05:40,387 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 00:05:40,389 INFO ]: With dead ends: 8 [2018-06-25 00:05:40,390 INFO ]: Without dead ends: 8 [2018-06-25 00:05:40,390 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 [2018-06-25 00:05:40,390 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-25 00:05:40,401 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-25 00:05:40,401 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 00:05:40,404 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1509 transitions. [2018-06-25 00:05:40,404 INFO ]: Start accepts. Automaton has 8 states and 1509 transitions. Word has length 6 [2018-06-25 00:05:40,404 INFO ]: Finished accepts. word is rejected. [2018-06-25 00:05:40,404 INFO ]: Abstraction has 8 states and 1509 transitions. [2018-06-25 00:05:40,404 INFO ]: Interpolant automaton has 3 states. [2018-06-25 00:05:40,404 INFO ]: Start isEmpty. Operand 8 states and 1509 transitions. [2018-06-25 00:05:40,405 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 00:05:40,405 INFO ]: Found error trace [2018-06-25 00:05:40,405 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 00:05:40,405 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:05:40,405 INFO ]: Analyzing trace with hash -1997065136, now seen corresponding path program 1 times [2018-06-25 00:05:40,405 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:05:40,405 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:05:40,406 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:05:40,406 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:05:40,406 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:05:40,426 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:05:40,485 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 00:05:40,485 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 00:05:40,485 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 00:05:40,485 INFO ]: Interpolant automaton has 3 states [2018-06-25 00:05:40,485 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 00:05:40,485 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 00:05:40,485 INFO ]: Start difference. First operand 8 states and 1509 transitions. Second operand 3 states. [2018-06-25 00:05:44,530 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 00:05:44,530 INFO ]: Finished difference Result 9 states and 1511 transitions. [2018-06-25 00:05:44,531 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 00:05:44,531 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-25 00:05:44,531 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 00:05:44,533 INFO ]: With dead ends: 9 [2018-06-25 00:05:44,533 INFO ]: Without dead ends: 9 [2018-06-25 00:05:44,533 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 [2018-06-25 00:05:44,533 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 00:05:44,539 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 00:05:44,539 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 00:05:44,542 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1511 transitions. [2018-06-25 00:05:44,542 INFO ]: Start accepts. Automaton has 9 states and 1511 transitions. Word has length 6 [2018-06-25 00:05:44,542 INFO ]: Finished accepts. word is rejected. [2018-06-25 00:05:44,543 INFO ]: Abstraction has 9 states and 1511 transitions. [2018-06-25 00:05:44,543 INFO ]: Interpolant automaton has 3 states. [2018-06-25 00:05:44,543 INFO ]: Start isEmpty. Operand 9 states and 1511 transitions. [2018-06-25 00:05:44,545 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 00:05:44,546 INFO ]: Found error trace [2018-06-25 00:05:44,546 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 00:05:44,546 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:05:44,546 INFO ]: Analyzing trace with hash 524540919, now seen corresponding path program 1 times [2018-06-25 00:05:44,546 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:05:44,546 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:05:44,547 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:05:44,547 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:05:44,547 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:05:44,599 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:05:44,708 INFO ]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-25 00:05:44,708 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 00:05:44,708 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 00:05:44,708 INFO ]: Interpolant automaton has 3 states [2018-06-25 00:05:44,708 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 00:05:44,708 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 00:05:44,708 INFO ]: Start difference. First operand 9 states and 1511 transitions. Second operand 3 states. [2018-06-25 00:05:48,882 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 00:05:48,882 INFO ]: Finished difference Result 11 states and 1647 transitions. [2018-06-25 00:05:48,882 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 00:05:48,882 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-25 00:05:48,882 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 00:05:48,885 INFO ]: With dead ends: 11 [2018-06-25 00:05:48,885 INFO ]: Without dead ends: 11 [2018-06-25 00:05:48,885 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 [2018-06-25 00:05:48,885 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 00:05:48,892 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-06-25 00:05:48,892 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 00:05:48,896 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1645 transitions. [2018-06-25 00:05:48,897 INFO ]: Start accepts. Automaton has 10 states and 1645 transitions. Word has length 8 [2018-06-25 00:05:48,897 INFO ]: Finished accepts. word is rejected. [2018-06-25 00:05:48,897 INFO ]: Abstraction has 10 states and 1645 transitions. [2018-06-25 00:05:48,897 INFO ]: Interpolant automaton has 3 states. [2018-06-25 00:05:48,897 INFO ]: Start isEmpty. Operand 10 states and 1645 transitions. [2018-06-25 00:05:48,898 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 00:05:48,898 INFO ]: Found error trace [2018-06-25 00:05:48,898 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 00:05:48,898 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 00:05:48,898 INFO ]: Analyzing trace with hash 154799666, now seen corresponding path program 1 times [2018-06-25 00:05:48,898 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 00:05:48,898 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 00:05:48,899 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:05:48,899 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 00:05:48,899 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 00:05:48,958 INFO ]: Conjunction of SSA is unsat [2018-06-25 00:05:49,045 INFO ]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-25 00:05:49,045 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 00:05:49,045 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 00:05:49,045 INFO ]: Interpolant automaton has 3 states [2018-06-25 00:05:49,045 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 00:05:49,045 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 00:05:49,045 INFO ]: Start difference. First operand 10 states and 1645 transitions. Second operand 3 states. Received shutdown request... [2018-06-25 00:05:50,846 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 00:05:50,846 WARN ]: Verification canceled [2018-06-25 00:05:50,849 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-25 00:05:50,850 WARN ]: Timeout [2018-06-25 00:05:50,850 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 12:05:50 BasicIcfg [2018-06-25 00:05:50,850 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 00:05:50,851 INFO ]: Toolchain (without parser) took 75720.38 ms. Allocated memory was 303.0 MB in the beginning and 961.5 MB in the end (delta: 658.5 MB). Free memory was 235.5 MB in the beginning and 628.8 MB in the end (delta: -393.3 MB). Peak memory consumption was 265.2 MB. Max. memory is 3.6 GB. [2018-06-25 00:05:50,852 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 303.0 MB. Free memory is still 268.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 00:05:50,852 INFO ]: ChcToBoogie took 68.44 ms. Allocated memory is still 303.0 MB. Free memory was 235.5 MB in the beginning and 232.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 00:05:50,853 INFO ]: Boogie Preprocessor took 110.02 ms. Allocated memory is still 303.0 MB. Free memory was 232.5 MB in the beginning and 230.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 00:05:50,853 INFO ]: RCFGBuilder took 479.61 ms. Allocated memory is still 303.0 MB. Free memory was 230.5 MB in the beginning and 197.4 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 3.6 GB. [2018-06-25 00:05:50,854 INFO ]: BlockEncodingV2 took 51316.63 ms. Allocated memory was 303.0 MB in the beginning and 504.4 MB in the end (delta: 201.3 MB). Free memory was 197.4 MB in the beginning and 367.9 MB in the end (delta: -170.5 MB). Peak memory consumption was 151.1 MB. Max. memory is 3.6 GB. [2018-06-25 00:05:50,854 INFO ]: TraceAbstraction took 23729.58 ms. Allocated memory was 504.4 MB in the beginning and 961.5 MB in the end (delta: 457.2 MB). Free memory was 367.9 MB in the beginning and 628.8 MB in the end (delta: -260.9 MB). Peak memory consumption was 196.3 MB. Max. memory is 3.6 GB. [2018-06-25 00:05:50,864 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 10 edges - StatisticsResult: Encoded RCFG 6 locations, 1299 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 268.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 68.44 ms. Allocated memory is still 303.0 MB. Free memory was 235.5 MB in the beginning and 232.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 110.02 ms. Allocated memory is still 303.0 MB. Free memory was 232.5 MB in the beginning and 230.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 479.61 ms. Allocated memory is still 303.0 MB. Free memory was 230.5 MB in the beginning and 197.4 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 51316.63 ms. Allocated memory was 303.0 MB in the beginning and 504.4 MB in the end (delta: 201.3 MB). Free memory was 197.4 MB in the beginning and 367.9 MB in the end (delta: -170.5 MB). Peak memory consumption was 151.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 23729.58 ms. Allocated memory was 504.4 MB in the beginning and 961.5 MB in the end (delta: 457.2 MB). Free memory was 367.9 MB in the beginning and 628.8 MB in the end (delta: -260.9 MB). Peak memory consumption was 196.3 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (10states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (8 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. TIMEOUT Result, 23.6s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 22.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 0 SDslu, 14 SDs, 0 SdLazy, 5539 SolverSat, 5687 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=4, 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, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 18/18 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_14.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-25_00-05-50-876.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_14.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-25_00-05-50-876.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_14.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-25_00-05-50-876.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_14.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_00-05-50-876.csv Completed graceful shutdown