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__nested-while.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:45:25,829 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:45:25,830 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:45:25,842 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:45:25,842 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:45:25,843 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:45:25,844 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:45:25,851 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:45:25,852 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:45:25,853 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:45:25,856 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:45:25,856 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:45:25,857 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:45:25,858 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:45:25,861 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:45:25,862 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:45:25,862 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:45:25,864 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:45:25,876 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:45:25,877 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:45:25,878 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:45:25,879 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:45:25,881 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:45:25,881 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:45:25,882 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:45:25,882 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:45:25,883 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:45:25,884 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:45:25,884 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:45:25,885 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:45:25,885 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:45:25,886 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:45:25,886 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:45:25,886 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:45:25,887 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:45:25,888 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:45:25,888 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:45:25,903 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:45:25,903 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:45:25,904 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:45:25,904 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:45:25,905 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:45:25,905 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:45:25,905 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:45:25,905 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:45:25,906 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:45:25,906 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:45:25,906 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:45:25,906 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:45:25,906 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:45:25,906 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:45:25,907 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:45:25,907 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:45:25,907 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:45:25,907 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:45:25,907 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:45:25,907 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:45:25,908 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:45:25,909 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:45:25,909 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:45:25,965 INFO ]: Repository-Root is: /tmp [2018-06-26 18:45:25,981 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:45:25,987 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:45:25,988 INFO ]: Initializing SmtParser... [2018-06-26 18:45:25,988 INFO ]: SmtParser initialized [2018-06-26 18:45:25,989 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/loop__nested-while.smt2 [2018-06-26 18:45:25,990 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 [2018-06-26 18:45:26,083 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/loop__nested-while.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@7da9f698 [2018-06-26 18:45:26,385 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/loop__nested-while.smt2 [2018-06-26 18:45:26,389 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:45:26,399 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:45:26,400 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:45:26,400 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:45:26,400 INFO ]: ChcToBoogie initialized [2018-06-26 18:45:26,403 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:45:26" (1/1) ... [2018-06-26 18:45:26,463 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:26 Unit [2018-06-26 18:45:26,463 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:45:26,463 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:45:26,463 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:45:26,463 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:45:26,486 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:26" (1/1) ... [2018-06-26 18:45:26,486 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:26" (1/1) ... [2018-06-26 18:45:26,493 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:26" (1/1) ... [2018-06-26 18:45:26,493 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:26" (1/1) ... [2018-06-26 18:45:26,499 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:26" (1/1) ... [2018-06-26 18:45:26,513 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:26" (1/1) ... [2018-06-26 18:45:26,515 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:26" (1/1) ... [2018-06-26 18:45:26,517 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:45:26,518 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:45:26,518 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:45:26,518 INFO ]: RCFGBuilder initialized [2018-06-26 18:45:26,518 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:26" (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 [2018-06-26 18:45:26,540 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:45:26,540 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:45:26,540 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:45:26,540 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:45:26,540 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:45:26,540 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 18:45:26,932 INFO ]: Using library mode [2018-06-26 18:45:26,932 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:45:26 BoogieIcfgContainer [2018-06-26 18:45:26,932 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:45:26,932 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:45:26,932 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:45:26,933 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:45:26,933 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:45:26" (1/1) ... [2018-06-26 18:45:26,946 INFO ]: Initial Icfg 11 locations, 25 edges [2018-06-26 18:45:26,949 INFO ]: Using Remove infeasible edges [2018-06-26 18:45:26,949 INFO ]: Using Maximize final states [2018-06-26 18:45:26,950 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:45:26,950 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:45:26,952 INFO ]: Using Remove sink states [2018-06-26 18:45:26,952 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:45:26,953 INFO ]: Using Use SBE [2018-06-26 18:45:26,972 INFO ]: SBE split 2 edges [2018-06-26 18:45:26,977 INFO ]: Removed 5 edges and 2 locations because of local infeasibility [2018-06-26 18:45:26,978 INFO ]: 0 new accepting states [2018-06-26 18:45:27,065 INFO ]: Removed 9 edges and 2 locations by large block encoding [2018-06-26 18:45:27,067 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:45:27,069 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:45:27,069 INFO ]: 0 new accepting states [2018-06-26 18:45:27,069 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:45:27,069 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:45:27,070 INFO ]: Encoded RCFG 7 locations, 20 edges [2018-06-26 18:45:27,070 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:45:27 BasicIcfg [2018-06-26 18:45:27,070 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:45:27,071 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:45:27,071 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:45:27,074 INFO ]: TraceAbstraction initialized [2018-06-26 18:45:27,074 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:45:26" (1/4) ... [2018-06-26 18:45:27,076 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638cfe4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:45:27, skipping insertion in model container [2018-06-26 18:45:27,076 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:45:26" (2/4) ... [2018-06-26 18:45:27,077 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638cfe4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:45:27, skipping insertion in model container [2018-06-26 18:45:27,077 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:45:26" (3/4) ... [2018-06-26 18:45:27,077 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638cfe4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:45:27, skipping insertion in model container [2018-06-26 18:45:27,077 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:45:27" (4/4) ... [2018-06-26 18:45:27,078 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:45:27,088 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:45:27,094 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:45:27,128 INFO ]: Using default assertion order modulation [2018-06-26 18:45:27,129 INFO ]: Interprodecural is true [2018-06-26 18:45:27,129 INFO ]: Hoare is false [2018-06-26 18:45:27,129 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:45:27,129 INFO ]: Backedges is TWOTRACK [2018-06-26 18:45:27,129 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:45:27,129 INFO ]: Difference is false [2018-06-26 18:45:27,129 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:45:27,129 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:45:27,141 INFO ]: Start isEmpty. Operand 7 states. [2018-06-26 18:45:27,149 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:45:27,149 INFO ]: Found error trace [2018-06-26 18:45:27,150 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:45:27,151 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:45:27,155 INFO ]: Analyzing trace with hash 42605729, now seen corresponding path program 1 times [2018-06-26 18:45:27,157 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:45:27,158 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:45:27,191 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:27,191 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:27,191 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:27,227 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:27,301 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:27,303 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:45:27,303 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:45:27,304 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:45:27,316 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:45:27,316 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:45:27,319 INFO ]: Start difference. First operand 7 states. Second operand 3 states. [2018-06-26 18:45:27,497 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:45:27,497 INFO ]: Finished difference Result 8 states and 22 transitions. [2018-06-26 18:45:27,498 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:45:27,498 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:45:27,499 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:45:27,507 INFO ]: With dead ends: 8 [2018-06-26 18:45:27,507 INFO ]: Without dead ends: 6 [2018-06-26 18:45:27,509 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 [2018-06-26 18:45:27,523 INFO ]: Start minimizeSevpa. Operand 6 states. [2018-06-26 18:45:27,534 INFO ]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-06-26 18:45:27,535 INFO ]: Start removeUnreachable. Operand 6 states. [2018-06-26 18:45:27,535 INFO ]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2018-06-26 18:45:27,536 INFO ]: Start accepts. Automaton has 6 states and 10 transitions. Word has length 5 [2018-06-26 18:45:27,536 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:45:27,536 INFO ]: Abstraction has 6 states and 10 transitions. [2018-06-26 18:45:27,536 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:45:27,536 INFO ]: Start isEmpty. Operand 6 states and 10 transitions. [2018-06-26 18:45:27,536 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:45:27,536 INFO ]: Found error trace [2018-06-26 18:45:27,536 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:45:27,536 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:45:27,536 INFO ]: Analyzing trace with hash 42456774, now seen corresponding path program 1 times [2018-06-26 18:45:27,536 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:45:27,537 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:45:27,537 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:27,537 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:27,537 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:27,545 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:27,561 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:27,561 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:45:27,561 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:45:27,563 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:45:27,563 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:45:27,563 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:45:27,563 INFO ]: Start difference. First operand 6 states and 10 transitions. Second operand 3 states. [2018-06-26 18:45:27,677 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:45:27,677 INFO ]: Finished difference Result 7 states and 12 transitions. [2018-06-26 18:45:27,678 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:45:27,678 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:45:27,678 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:45:27,678 INFO ]: With dead ends: 7 [2018-06-26 18:45:27,678 INFO ]: Without dead ends: 6 [2018-06-26 18:45:27,679 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 [2018-06-26 18:45:27,679 INFO ]: Start minimizeSevpa. Operand 6 states. [2018-06-26 18:45:27,680 INFO ]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-06-26 18:45:27,680 INFO ]: Start removeUnreachable. Operand 6 states. [2018-06-26 18:45:27,680 INFO ]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-06-26 18:45:27,680 INFO ]: Start accepts. Automaton has 6 states and 8 transitions. Word has length 5 [2018-06-26 18:45:27,680 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:45:27,680 INFO ]: Abstraction has 6 states and 8 transitions. [2018-06-26 18:45:27,680 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:45:27,680 INFO ]: Start isEmpty. Operand 6 states and 8 transitions. [2018-06-26 18:45:27,681 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:45:27,681 INFO ]: Found error trace [2018-06-26 18:45:27,681 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:45:27,681 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:45:27,681 INFO ]: Analyzing trace with hash 42516356, now seen corresponding path program 1 times [2018-06-26 18:45:27,681 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:45:27,681 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:45:27,682 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:27,682 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:27,682 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:27,698 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:27,742 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:27,742 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:45:27,742 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:45:27,742 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:45:27,742 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:45:27,742 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:45:27,742 INFO ]: Start difference. First operand 6 states and 8 transitions. Second operand 3 states. [2018-06-26 18:45:27,760 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:45:27,760 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-26 18:45:27,760 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:45:27,760 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:45:27,760 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:45:27,760 INFO ]: With dead ends: 7 [2018-06-26 18:45:27,760 INFO ]: Without dead ends: 7 [2018-06-26 18:45:27,761 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 [2018-06-26 18:45:27,761 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-26 18:45:27,762 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-26 18:45:27,762 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-26 18:45:27,762 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-26 18:45:27,763 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-26 18:45:27,763 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:45:27,763 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-26 18:45:27,763 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:45:27,763 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-26 18:45:27,763 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:45:27,763 INFO ]: Found error trace [2018-06-26 18:45:27,763 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:45:27,763 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:45:27,763 INFO ]: Analyzing trace with hash 1317749902, now seen corresponding path program 1 times [2018-06-26 18:45:27,763 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:45:27,763 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:45:27,764 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:27,764 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:27,764 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:27,775 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:27,886 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:27,886 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:45:27,886 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 [2018-06-26 18:45:27,894 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:27,911 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:27,916 INFO ]: Computing forward predicates... [2018-06-26 18:45:27,984 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:28,002 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:45:28,002 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-06-26 18:45:28,002 INFO ]: Interpolant automaton has 6 states [2018-06-26 18:45:28,002 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 18:45:28,002 INFO ]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:45:28,002 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 6 states. [2018-06-26 18:45:28,313 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:45:28,313 INFO ]: Finished difference Result 10 states and 19 transitions. [2018-06-26 18:45:28,314 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 18:45:28,314 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-26 18:45:28,315 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:45:28,315 INFO ]: With dead ends: 10 [2018-06-26 18:45:28,315 INFO ]: Without dead ends: 10 [2018-06-26 18:45:28,315 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:45:28,315 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-26 18:45:28,316 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-06-26 18:45:28,316 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 18:45:28,317 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 16 transitions. [2018-06-26 18:45:28,317 INFO ]: Start accepts. Automaton has 9 states and 16 transitions. Word has length 6 [2018-06-26 18:45:28,317 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:45:28,317 INFO ]: Abstraction has 9 states and 16 transitions. [2018-06-26 18:45:28,317 INFO ]: Interpolant automaton has 6 states. [2018-06-26 18:45:28,317 INFO ]: Start isEmpty. Operand 9 states and 16 transitions. [2018-06-26 18:45:28,317 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:45:28,317 INFO ]: Found error trace [2018-06-26 18:45:28,317 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:45:28,317 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:45:28,318 INFO ]: Analyzing trace with hash 1317809484, now seen corresponding path program 1 times [2018-06-26 18:45:28,318 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:45:28,318 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:45:28,318 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:28,318 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:28,318 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:28,344 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:28,415 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:28,415 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:45:28,415 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 [2018-06-26 18:45:28,436 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:28,466 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:28,468 INFO ]: Computing forward predicates... [2018-06-26 18:45:28,585 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:28,605 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:45:28,605 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-06-26 18:45:28,606 INFO ]: Interpolant automaton has 6 states [2018-06-26 18:45:28,606 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 18:45:28,606 INFO ]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:45:28,606 INFO ]: Start difference. First operand 9 states and 16 transitions. Second operand 6 states. [2018-06-26 18:45:28,719 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:45:28,719 INFO ]: Finished difference Result 13 states and 26 transitions. [2018-06-26 18:45:28,719 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-26 18:45:28,719 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-26 18:45:28,719 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:45:28,720 INFO ]: With dead ends: 13 [2018-06-26 18:45:28,720 INFO ]: Without dead ends: 13 [2018-06-26 18:45:28,720 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-06-26 18:45:28,720 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-26 18:45:28,721 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 10. [2018-06-26 18:45:28,721 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-26 18:45:28,722 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2018-06-26 18:45:28,722 INFO ]: Start accepts. Automaton has 10 states and 18 transitions. Word has length 6 [2018-06-26 18:45:28,722 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:45:28,722 INFO ]: Abstraction has 10 states and 18 transitions. [2018-06-26 18:45:28,722 INFO ]: Interpolant automaton has 6 states. [2018-06-26 18:45:28,722 INFO ]: Start isEmpty. Operand 10 states and 18 transitions. [2018-06-26 18:45:28,722 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-26 18:45:28,722 INFO ]: Found error trace [2018-06-26 18:45:28,722 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-06-26 18:45:28,722 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:45:28,723 INFO ]: Analyzing trace with hash -686897650, now seen corresponding path program 1 times [2018-06-26 18:45:28,723 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:45:28,725 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:45:28,725 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:28,725 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:28,725 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:45:28,758 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:28,999 INFO ]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:45:29,000 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:45:29,000 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 [2018-06-26 18:45:29,005 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:45:29,036 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:45:29,039 INFO ]: Computing forward predicates... [2018-06-26 18:45:29,565 INFO ]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:45:29,587 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:45:29,588 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-06-26 18:45:29,588 INFO ]: Interpolant automaton has 9 states [2018-06-26 18:45:29,588 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-26 18:45:29,588 INFO ]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-26 18:45:29,588 INFO ]: Start difference. First operand 10 states and 18 transitions. Second operand 9 states. [2018-06-26 18:45:29,744 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:45:29,744 INFO ]: Finished difference Result 14 states and 30 transitions. [2018-06-26 18:45:29,745 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-26 18:45:29,745 INFO ]: Start accepts. Automaton has 9 states. Word has length 8 [2018-06-26 18:45:29,745 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:45:29,745 INFO ]: With dead ends: 14 [2018-06-26 18:45:29,745 INFO ]: Without dead ends: 0 [2018-06-26 18:45:29,745 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-06-26 18:45:29,745 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:45:29,746 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:45:29,746 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:45:29,746 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:45:29,746 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-26 18:45:29,746 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:45:29,746 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:45:29,746 INFO ]: Interpolant automaton has 9 states. [2018-06-26 18:45:29,746 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:45:29,746 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:45:29,748 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:45:29,749 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:45:29 BasicIcfg [2018-06-26 18:45:29,749 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:45:29,750 INFO ]: Toolchain (without parser) took 3360.37 ms. Allocated memory was 304.6 MB in the beginning and 325.6 MB in the end (delta: 21.0 MB). Free memory was 258.9 MB in the beginning and 244.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 35.9 MB. Max. memory is 3.6 GB. [2018-06-26 18:45:29,752 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:45:29,752 INFO ]: ChcToBoogie took 63.25 ms. Allocated memory is still 304.6 MB. Free memory was 257.9 MB in the beginning and 255.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:45:29,753 INFO ]: Boogie Preprocessor took 53.62 ms. Allocated memory is still 304.6 MB. Free memory was 255.9 MB in the beginning and 254.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:45:29,753 INFO ]: RCFGBuilder took 414.44 ms. Allocated memory is still 304.6 MB. Free memory was 253.9 MB in the beginning and 240.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:45:29,754 INFO ]: BlockEncodingV2 took 137.75 ms. Allocated memory is still 304.6 MB. Free memory was 240.9 MB in the beginning and 235.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:45:29,754 INFO ]: TraceAbstraction took 2678.48 ms. Allocated memory was 304.6 MB in the beginning and 325.6 MB in the end (delta: 21.0 MB). Free memory was 234.9 MB in the beginning and 244.0 MB in the end (delta: -9.1 MB). Peak memory consumption was 11.9 MB. Max. memory is 3.6 GB. [2018-06-26 18:45:29,766 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 11 locations, 25 edges - StatisticsResult: Encoded RCFG 7 locations, 20 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 63.25 ms. Allocated memory is still 304.6 MB. Free memory was 257.9 MB in the beginning and 255.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 53.62 ms. Allocated memory is still 304.6 MB. Free memory was 255.9 MB in the beginning and 254.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 414.44 ms. Allocated memory is still 304.6 MB. Free memory was 253.9 MB in the beginning and 240.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 137.75 ms. Allocated memory is still 304.6 MB. Free memory was 240.9 MB in the beginning and 235.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2678.48 ms. Allocated memory was 304.6 MB in the beginning and 325.6 MB in the end (delta: 21.0 MB). Free memory was 234.9 MB in the beginning and 244.0 MB in the end (delta: -9.1 MB). Peak memory consumption was 11.9 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, 7 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 1 SDslu, 37 SDs, 0 SdLazy, 121 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=5, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1121 SizeOfPredicates, 12 NumberOfNonLiveVariables, 252 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 4/16 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__nested-while.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-45-29-782.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__nested-while.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-45-29-782.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__nested-while.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-45-29-782.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__nested-while.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-45-29-782.csv Received shutdown request...