java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/llreve-bench/smt2/loop__loop3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:42:28,209 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:42:28,213 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:42:28,227 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:42:28,227 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:42:28,230 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:42:28,231 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:42:28,233 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:42:28,235 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:42:28,235 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:42:28,237 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:42:28,238 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:42:28,239 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:42:28,240 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:42:28,240 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:42:28,243 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:42:28,245 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:42:28,258 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:42:28,259 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:42:28,260 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:42:28,261 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:42:28,263 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:42:28,263 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:42:28,263 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:42:28,264 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:42:28,265 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:42:28,266 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:42:28,272 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:42:28,273 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:42:28,273 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:42:28,274 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:42:28,275 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:42:28,275 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:42:28,276 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:42:28,276 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:42:28,277 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:42:28,290 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:42:28,290 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:42:28,291 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:42:28,291 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:42:28,292 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:42:28,292 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:42:28,292 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:42:28,292 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:42:28,293 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:42:28,293 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:42:28,293 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:42:28,293 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:42:28,293 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:42:28,293 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:42:28,294 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:42:28,294 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:42:28,294 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:42:28,294 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:42:28,294 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:42:28,295 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:42:28,295 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:42:28,296 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:42:28,296 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:42:28,345 INFO ]: Repository-Root is: /tmp [2018-06-24 21:42:28,358 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:42:28,361 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:42:28,363 INFO ]: Initializing SmtParser... [2018-06-24 21:42:28,363 INFO ]: SmtParser initialized [2018-06-24 21:42:28,363 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/loop__loop3.smt2 [2018-06-24 21:42:28,365 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 21:42:28,456 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/loop__loop3.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@6d0cc5fa [2018-06-24 21:42:28,608 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/loop__loop3.smt2 [2018-06-24 21:42:28,622 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:42:28,633 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:42:28,634 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:42:28,634 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:42:28,634 INFO ]: ChcToBoogie initialized [2018-06-24 21:42:28,637 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:42:28" (1/1) ... [2018-06-24 21:42:28,691 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:28 Unit [2018-06-24 21:42:28,691 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:42:28,692 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:42:28,692 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:42:28,692 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:42:28,712 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:28" (1/1) ... [2018-06-24 21:42:28,712 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:28" (1/1) ... [2018-06-24 21:42:28,721 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:28" (1/1) ... [2018-06-24 21:42:28,721 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:28" (1/1) ... [2018-06-24 21:42:28,723 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:28" (1/1) ... [2018-06-24 21:42:28,725 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:28" (1/1) ... [2018-06-24 21:42:28,726 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:28" (1/1) ... [2018-06-24 21:42:28,728 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:42:28,729 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:42:28,729 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:42:28,729 INFO ]: RCFGBuilder initialized [2018-06-24 21:42:28,729 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:28" (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 21:42:28,744 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:42:28,744 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:42:28,744 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:42:28,744 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:42:28,744 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:42:28,744 INFO ]: Found implementation of procedure Ultimate.START [2018-06-24 21:42:28,982 INFO ]: Using library mode [2018-06-24 21:42:28,983 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:42:28 BoogieIcfgContainer [2018-06-24 21:42:28,983 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:42:28,984 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:42:28,984 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:42:28,984 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:42:28,990 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:42:28" (1/1) ... [2018-06-24 21:42:29,004 INFO ]: Initial Icfg 10 locations, 12 edges [2018-06-24 21:42:29,007 INFO ]: Using Remove infeasible edges [2018-06-24 21:42:29,008 INFO ]: Using Maximize final states [2018-06-24 21:42:29,008 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:42:29,008 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:42:29,010 INFO ]: Using Remove sink states [2018-06-24 21:42:29,011 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:42:29,011 INFO ]: Using Use SBE [2018-06-24 21:42:29,015 INFO ]: SBE split 0 edges [2018-06-24 21:42:29,026 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 21:42:29,033 INFO ]: 0 new accepting states [2018-06-24 21:42:29,061 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-24 21:42:29,063 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:42:29,067 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:42:29,067 INFO ]: 0 new accepting states [2018-06-24 21:42:29,067 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:42:29,067 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:42:29,068 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-24 21:42:29,068 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:42:29 BasicIcfg [2018-06-24 21:42:29,068 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:42:29,069 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:42:29,069 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:42:29,072 INFO ]: TraceAbstraction initialized [2018-06-24 21:42:29,072 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:42:28" (1/4) ... [2018-06-24 21:42:29,073 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a80409f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:42:29, skipping insertion in model container [2018-06-24 21:42:29,073 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:28" (2/4) ... [2018-06-24 21:42:29,073 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a80409f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:42:29, skipping insertion in model container [2018-06-24 21:42:29,073 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:42:28" (3/4) ... [2018-06-24 21:42:29,074 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a80409f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:42:29, skipping insertion in model container [2018-06-24 21:42:29,074 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:42:29" (4/4) ... [2018-06-24 21:42:29,075 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:42:29,084 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:42:29,092 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:42:29,139 INFO ]: Using default assertion order modulation [2018-06-24 21:42:29,139 INFO ]: Interprodecural is true [2018-06-24 21:42:29,139 INFO ]: Hoare is false [2018-06-24 21:42:29,139 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:42:29,139 INFO ]: Backedges is TWOTRACK [2018-06-24 21:42:29,139 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:42:29,139 INFO ]: Difference is false [2018-06-24 21:42:29,139 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:42:29,139 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:42:29,148 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:42:29,157 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:42:29,157 INFO ]: Found error trace [2018-06-24 21:42:29,157 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:42:29,158 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:29,166 INFO ]: Analyzing trace with hash 37311172, now seen corresponding path program 1 times [2018-06-24 21:42:29,167 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:29,168 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:29,206 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:29,206 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:29,206 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:29,254 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:29,403 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:29,404 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:42:29,404 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:42:29,406 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:42:29,418 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:42:29,419 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:42:29,421 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:42:29,488 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:29,488 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-24 21:42:29,489 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:42:29,490 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:42:29,490 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:29,498 INFO ]: With dead ends: 7 [2018-06-24 21:42:29,498 INFO ]: Without dead ends: 7 [2018-06-24 21:42:29,499 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:42:29,514 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:42:29,543 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:42:29,544 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:42:29,545 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-24 21:42:29,546 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-24 21:42:29,546 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:29,546 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-24 21:42:29,546 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:42:29,546 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-24 21:42:29,546 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:42:29,546 INFO ]: Found error trace [2018-06-24 21:42:29,546 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:42:29,547 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:29,547 INFO ]: Analyzing trace with hash 1156290923, now seen corresponding path program 1 times [2018-06-24 21:42:29,547 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:29,547 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:29,548 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:29,551 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:29,551 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:29,581 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:29,889 WARN ]: Spent 212.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-06-24 21:42:30,053 WARN ]: Spent 110.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-06-24 21:42:30,054 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:30,054 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:42:30,054 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 21:42:30,062 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:30,089 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:30,097 INFO ]: Computing forward predicates... [2018-06-24 21:42:30,316 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:30,347 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:42:30,347 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-24 21:42:30,347 INFO ]: Interpolant automaton has 6 states [2018-06-24 21:42:30,347 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 21:42:30,347 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:42:30,348 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 6 states. [2018-06-24 21:42:30,615 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:30,616 INFO ]: Finished difference Result 10 states and 18 transitions. [2018-06-24 21:42:30,616 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 21:42:30,616 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-24 21:42:30,616 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:30,616 INFO ]: With dead ends: 10 [2018-06-24 21:42:30,616 INFO ]: Without dead ends: 10 [2018-06-24 21:42:30,617 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:42:30,617 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 21:42:30,618 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-24 21:42:30,618 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-24 21:42:30,619 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2018-06-24 21:42:30,619 INFO ]: Start accepts. Automaton has 10 states and 18 transitions. Word has length 6 [2018-06-24 21:42:30,619 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:30,619 INFO ]: Abstraction has 10 states and 18 transitions. [2018-06-24 21:42:30,619 INFO ]: Interpolant automaton has 6 states. [2018-06-24 21:42:30,619 INFO ]: Start isEmpty. Operand 10 states and 18 transitions. [2018-06-24 21:42:30,619 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:42:30,619 INFO ]: Found error trace [2018-06-24 21:42:30,620 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:42:30,620 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:30,620 INFO ]: Analyzing trace with hash 1156350505, now seen corresponding path program 1 times [2018-06-24 21:42:30,620 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:30,620 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:30,621 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:30,621 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:30,621 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:30,640 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:30,708 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:30,709 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:42:30,709 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:42:30,716 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:30,733 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:30,734 INFO ]: Computing forward predicates... [2018-06-24 21:42:30,749 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:30,769 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:42:30,769 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-24 21:42:30,769 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:42:30,769 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:42:30,769 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:42:30,769 INFO ]: Start difference. First operand 10 states and 18 transitions. Second operand 5 states. [2018-06-24 21:42:30,904 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:30,904 INFO ]: Finished difference Result 15 states and 32 transitions. [2018-06-24 21:42:30,905 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:42:30,905 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 21:42:30,905 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:30,905 INFO ]: With dead ends: 15 [2018-06-24 21:42:30,905 INFO ]: Without dead ends: 15 [2018-06-24 21:42:30,906 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:42:30,906 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-24 21:42:30,908 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-24 21:42:30,908 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-24 21:42:30,908 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 32 transitions. [2018-06-24 21:42:30,908 INFO ]: Start accepts. Automaton has 15 states and 32 transitions. Word has length 6 [2018-06-24 21:42:30,908 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:30,909 INFO ]: Abstraction has 15 states and 32 transitions. [2018-06-24 21:42:30,909 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:42:30,909 INFO ]: Start isEmpty. Operand 15 states and 32 transitions. [2018-06-24 21:42:30,909 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 21:42:30,909 INFO ]: Found error trace [2018-06-24 21:42:30,909 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-24 21:42:30,909 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:30,909 INFO ]: Analyzing trace with hash 1486831460, now seen corresponding path program 2 times [2018-06-24 21:42:30,909 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:30,909 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:30,910 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:30,910 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:30,910 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:30,922 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:31,161 INFO ]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:31,162 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:42:31,162 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:42:31,168 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:42:31,201 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:42:31,201 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:31,203 INFO ]: Computing forward predicates... [2018-06-24 21:42:31,297 INFO ]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:31,320 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:42:31,320 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2018-06-24 21:42:31,321 INFO ]: Interpolant automaton has 8 states [2018-06-24 21:42:31,321 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 21:42:31,321 INFO ]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-06-24 21:42:31,321 INFO ]: Start difference. First operand 15 states and 32 transitions. Second operand 8 states. [2018-06-24 21:42:31,807 WARN ]: Spent 268.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2018-06-24 21:42:31,871 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:31,871 INFO ]: Finished difference Result 26 states and 58 transitions. [2018-06-24 21:42:31,872 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 21:42:31,872 INFO ]: Start accepts. Automaton has 8 states. Word has length 7 [2018-06-24 21:42:31,872 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:31,874 INFO ]: With dead ends: 26 [2018-06-24 21:42:31,874 INFO ]: Without dead ends: 26 [2018-06-24 21:42:31,874 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-06-24 21:42:31,874 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-24 21:42:31,877 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 17. [2018-06-24 21:42:31,878 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-24 21:42:31,878 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 37 transitions. [2018-06-24 21:42:31,878 INFO ]: Start accepts. Automaton has 17 states and 37 transitions. Word has length 7 [2018-06-24 21:42:31,878 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:31,878 INFO ]: Abstraction has 17 states and 37 transitions. [2018-06-24 21:42:31,878 INFO ]: Interpolant automaton has 8 states. [2018-06-24 21:42:31,878 INFO ]: Start isEmpty. Operand 17 states and 37 transitions. [2018-06-24 21:42:31,879 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 21:42:31,879 INFO ]: Found error trace [2018-06-24 21:42:31,879 INFO ]: trace histogram [3, 1, 1, 1, 1, 1] [2018-06-24 21:42:31,879 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:31,879 INFO ]: Analyzing trace with hash -1212325749, now seen corresponding path program 2 times [2018-06-24 21:42:31,879 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:31,879 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:31,880 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:31,880 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:42:31,880 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:31,897 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:32,117 INFO ]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:32,117 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:42:32,117 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:42:32,125 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:42:32,169 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:42:32,169 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:32,172 INFO ]: Computing forward predicates... [2018-06-24 21:42:32,343 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:32,364 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:42:32,364 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-24 21:42:32,364 INFO ]: Interpolant automaton has 10 states [2018-06-24 21:42:32,364 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-24 21:42:32,365 INFO ]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-06-24 21:42:32,365 INFO ]: Start difference. First operand 17 states and 37 transitions. Second operand 10 states. [2018-06-24 21:42:32,616 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:32,616 INFO ]: Finished difference Result 19 states and 32 transitions. [2018-06-24 21:42:32,617 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-24 21:42:32,617 INFO ]: Start accepts. Automaton has 10 states. Word has length 8 [2018-06-24 21:42:32,617 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:32,617 INFO ]: With dead ends: 19 [2018-06-24 21:42:32,617 INFO ]: Without dead ends: 0 [2018-06-24 21:42:32,617 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-24 21:42:32,617 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:42:32,617 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:42:32,617 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:42:32,617 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:42:32,617 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-24 21:42:32,617 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:32,617 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:42:32,617 INFO ]: Interpolant automaton has 10 states. [2018-06-24 21:42:32,617 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:42:32,617 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:42:32,619 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:42:32,620 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:42:32 BasicIcfg [2018-06-24 21:42:32,620 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:42:32,621 INFO ]: Toolchain (without parser) took 3998.64 ms. Allocated memory was 305.1 MB in the beginning and 325.1 MB in the end (delta: 19.9 MB). Free memory was 261.5 MB in the beginning and 211.2 MB in the end (delta: 50.4 MB). Peak memory consumption was 70.3 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:32,622 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:42:32,622 INFO ]: ChcToBoogie took 57.38 ms. Allocated memory is still 305.1 MB. Free memory was 261.5 MB in the beginning and 259.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:32,623 INFO ]: Boogie Preprocessor took 36.46 ms. Allocated memory is still 305.1 MB. Free memory was 259.4 MB in the beginning and 258.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 21:42:32,623 INFO ]: RCFGBuilder took 254.65 ms. Allocated memory is still 305.1 MB. Free memory was 258.4 MB in the beginning and 250.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:32,624 INFO ]: BlockEncodingV2 took 84.50 ms. Allocated memory is still 305.1 MB. Free memory was 250.5 MB in the beginning and 247.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:32,624 INFO ]: TraceAbstraction took 3551.08 ms. Allocated memory was 305.1 MB in the beginning and 325.1 MB in the end (delta: 19.9 MB). Free memory was 247.4 MB in the beginning and 211.2 MB in the end (delta: 36.3 MB). Peak memory consumption was 56.2 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:32,628 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 12 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.38 ms. Allocated memory is still 305.1 MB. Free memory was 261.5 MB in the beginning and 259.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 36.46 ms. Allocated memory is still 305.1 MB. Free memory was 259.4 MB in the beginning and 258.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 254.65 ms. Allocated memory is still 305.1 MB. Free memory was 258.4 MB in the beginning and 250.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 84.50 ms. Allocated memory is still 305.1 MB. Free memory was 250.5 MB in the beginning and 247.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3551.08 ms. Allocated memory was 305.1 MB in the beginning and 325.1 MB in the end (delta: 19.9 MB). Free memory was 247.4 MB in the beginning and 211.2 MB in the end (delta: 36.3 MB). Peak memory consumption was 56.2 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. SAFE Result, 3.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 2 SDslu, 40 SDs, 0 SdLazy, 145 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1751 SizeOfPredicates, 20 NumberOfNonLiveVariables, 346 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 5/22 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__loop3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-42-32-640.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__loop3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-42-32-640.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__loop3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-42-32-640.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__loop3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-42-32-640.csv Received shutdown request...