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/ctigar/seq-len.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 01:26:32,864 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 01:26:32,867 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 01:26:32,883 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 01:26:32,883 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 01:26:32,885 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 01:26:32,886 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 01:26:32,890 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 01:26:32,891 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 01:26:32,893 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 01:26:32,893 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 01:26:32,894 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 01:26:32,894 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 01:26:32,895 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 01:26:32,899 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 01:26:32,900 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 01:26:32,912 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 01:26:32,914 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 01:26:32,916 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 01:26:32,917 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 01:26:32,918 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 01:26:32,920 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 01:26:32,920 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 01:26:32,920 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 01:26:32,924 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 01:26:32,925 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 01:26:32,925 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 01:26:32,926 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 01:26:32,927 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 01:26:32,927 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 01:26:32,932 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 01:26:32,933 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 01:26:32,933 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 01:26:32,934 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 01:26:32,934 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 01:26:32,935 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 01:26:32,958 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 01:26:32,959 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 01:26:32,959 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 01:26:32,959 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 01:26:32,960 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 01:26:32,960 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 01:26:32,960 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 01:26:32,961 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 01:26:32,964 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 01:26:32,964 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 01:26:32,964 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 01:26:32,964 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 01:26:32,964 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 01:26:32,965 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 01:26:32,965 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 01:26:32,965 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 01:26:32,965 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 01:26:32,965 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 01:26:32,966 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 01:26:32,966 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 01:26:32,966 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 01:26:32,968 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 01:26:32,969 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 01:26:33,017 INFO ]: Repository-Root is: /tmp [2018-06-25 01:26:33,033 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 01:26:33,037 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 01:26:33,039 INFO ]: Initializing SmtParser... [2018-06-25 01:26:33,039 INFO ]: SmtParser initialized [2018-06-25 01:26:33,040 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-len.c.smt2 [2018-06-25 01:26:33,041 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 01:26:33,125 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-len.c.smt2 unknown [2018-06-25 01:26:33,460 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/seq-len.c.smt2 [2018-06-25 01:26:33,465 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 01:26:33,471 INFO ]: Walking toolchain with 5 elements. [2018-06-25 01:26:33,471 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 01:26:33,471 INFO ]: Initializing ChcToBoogie... [2018-06-25 01:26:33,471 INFO ]: ChcToBoogie initialized [2018-06-25 01:26:33,474 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 01:26:33" (1/1) ... [2018-06-25 01:26:33,524 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:26:33 Unit [2018-06-25 01:26:33,525 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 01:26:33,525 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 01:26:33,525 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 01:26:33,525 INFO ]: Boogie Preprocessor initialized [2018-06-25 01:26:33,546 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:26:33" (1/1) ... [2018-06-25 01:26:33,546 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:26:33" (1/1) ... [2018-06-25 01:26:33,554 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:26:33" (1/1) ... [2018-06-25 01:26:33,554 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:26:33" (1/1) ... [2018-06-25 01:26:33,572 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:26:33" (1/1) ... [2018-06-25 01:26:33,574 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:26:33" (1/1) ... [2018-06-25 01:26:33,575 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:26:33" (1/1) ... [2018-06-25 01:26:33,587 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 01:26:33,587 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 01:26:33,587 INFO ]: Initializing RCFGBuilder... [2018-06-25 01:26:33,587 INFO ]: RCFGBuilder initialized [2018-06-25 01:26:33,588 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:26:33" (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 01:26:33,600 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 01:26:33,601 INFO ]: Found specification of procedure gotoProc [2018-06-25 01:26:33,601 INFO ]: Found implementation of procedure gotoProc [2018-06-25 01:26:33,601 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 01:26:33,601 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 01:26:33,601 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 01:26:33,903 INFO ]: Using library mode [2018-06-25 01:26:33,904 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:26:33 BoogieIcfgContainer [2018-06-25 01:26:33,904 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 01:26:33,904 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-25 01:26:33,904 INFO ]: Initializing BlockEncodingV2... [2018-06-25 01:26:33,908 INFO ]: BlockEncodingV2 initialized [2018-06-25 01:26:33,909 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:26:33" (1/1) ... [2018-06-25 01:26:33,923 INFO ]: Initial Icfg 10 locations, 10 edges [2018-06-25 01:26:33,924 INFO ]: Using Remove infeasible edges [2018-06-25 01:26:33,925 INFO ]: Using Maximize final states [2018-06-25 01:26:33,925 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-25 01:26:33,925 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-25 01:26:33,927 INFO ]: Using Remove sink states [2018-06-25 01:26:33,927 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-25 01:26:33,928 INFO ]: Using Use SBE [2018-06-25 01:26:33,936 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:26:33,959 WARN ]: aborting because of expected exponential blowup for input size 48 [2018-06-25 01:26:33,960 INFO ]: SBE split 0 edges [2018-06-25 01:26:33,968 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-25 01:26:33,969 INFO ]: 0 new accepting states [2018-06-25 01:26:34,012 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-25 01:26:34,014 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 01:26:34,018 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-25 01:26:34,018 INFO ]: 0 new accepting states [2018-06-25 01:26:34,019 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-25 01:26:34,019 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 01:26:34,019 INFO ]: Encoded RCFG 6 locations, 6 edges [2018-06-25 01:26:34,019 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 01:26:34 BasicIcfg [2018-06-25 01:26:34,019 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-25 01:26:34,023 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 01:26:34,023 INFO ]: Initializing TraceAbstraction... [2018-06-25 01:26:34,027 INFO ]: TraceAbstraction initialized [2018-06-25 01:26:34,027 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 01:26:33" (1/4) ... [2018-06-25 01:26:34,028 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbb4137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 01:26:34, skipping insertion in model container [2018-06-25 01:26:34,028 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:26:33" (2/4) ... [2018-06-25 01:26:34,028 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbb4137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 01:26:34, skipping insertion in model container [2018-06-25 01:26:34,028 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:26:33" (3/4) ... [2018-06-25 01:26:34,028 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbb4137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 01:26:34, skipping insertion in model container [2018-06-25 01:26:34,029 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 01:26:34" (4/4) ... [2018-06-25 01:26:34,030 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-25 01:26:34,039 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 01:26:34,047 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 01:26:34,084 INFO ]: Using default assertion order modulation [2018-06-25 01:26:34,085 INFO ]: Interprodecural is true [2018-06-25 01:26:34,085 INFO ]: Hoare is false [2018-06-25 01:26:34,085 INFO ]: Compute interpolants for FPandBP [2018-06-25 01:26:34,085 INFO ]: Backedges is TWOTRACK [2018-06-25 01:26:34,085 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 01:26:34,085 INFO ]: Difference is false [2018-06-25 01:26:34,085 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 01:26:34,085 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 01:26:34,093 INFO ]: Start isEmpty. Operand 6 states. [2018-06-25 01:26:34,102 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-25 01:26:34,102 INFO ]: Found error trace [2018-06-25 01:26:34,105 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-25 01:26:34,105 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:26:34,110 INFO ]: Analyzing trace with hash 35402562, now seen corresponding path program 1 times [2018-06-25 01:26:34,111 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:26:34,111 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:26:34,143 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:26:34,143 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:26:34,143 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:26:34,196 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:26:34,269 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:26:34,271 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 01:26:34,271 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 01:26:34,272 INFO ]: Interpolant automaton has 3 states [2018-06-25 01:26:34,282 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 01:26:34,283 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 01:26:34,285 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-25 01:26:34,365 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:26:34,367 INFO ]: Finished difference Result 7 states and 7 transitions. [2018-06-25 01:26:34,368 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 01:26:34,369 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-25 01:26:34,369 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:26:34,375 INFO ]: With dead ends: 7 [2018-06-25 01:26:34,375 INFO ]: Without dead ends: 7 [2018-06-25 01:26:34,377 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 01:26:34,392 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-25 01:26:34,411 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-25 01:26:34,413 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-25 01:26:34,413 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-06-25 01:26:34,415 INFO ]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-06-25 01:26:34,415 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:26:34,415 INFO ]: Abstraction has 7 states and 7 transitions. [2018-06-25 01:26:34,415 INFO ]: Interpolant automaton has 3 states. [2018-06-25 01:26:34,415 INFO ]: Start isEmpty. Operand 7 states and 7 transitions. [2018-06-25 01:26:34,415 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 01:26:34,415 INFO ]: Found error trace [2018-06-25 01:26:34,415 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 01:26:34,415 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:26:34,416 INFO ]: Analyzing trace with hash 1097213384, now seen corresponding path program 1 times [2018-06-25 01:26:34,416 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:26:34,416 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:26:34,417 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:26:34,417 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:26:34,417 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:26:34,489 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:26:34,790 WARN ]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 01:26:34,791 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:26:34,791 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:26:34,791 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 [2018-06-25 01:26:34,798 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:26:34,858 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:26:34,866 INFO ]: Computing forward predicates... [2018-06-25 01:26:35,510 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:26:35,542 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:26:35,542 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 01:26:35,543 INFO ]: Interpolant automaton has 5 states [2018-06-25 01:26:35,543 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 01:26:35,543 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 01:26:35,543 INFO ]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-06-25 01:26:35,769 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:26:35,769 INFO ]: Finished difference Result 8 states and 8 transitions. [2018-06-25 01:26:35,770 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 01:26:35,770 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-25 01:26:35,770 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:26:35,771 INFO ]: With dead ends: 8 [2018-06-25 01:26:35,771 INFO ]: Without dead ends: 8 [2018-06-25 01:26:35,771 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-25 01:26:35,772 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-25 01:26:35,772 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-25 01:26:35,772 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 01:26:35,773 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-06-25 01:26:35,773 INFO ]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-06-25 01:26:35,773 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:26:35,773 INFO ]: Abstraction has 8 states and 8 transitions. [2018-06-25 01:26:35,773 INFO ]: Interpolant automaton has 5 states. [2018-06-25 01:26:35,773 INFO ]: Start isEmpty. Operand 8 states and 8 transitions. [2018-06-25 01:26:35,773 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 01:26:35,773 INFO ]: Found error trace [2018-06-25 01:26:35,773 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-25 01:26:35,773 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:26:35,773 INFO ]: Analyzing trace with hash -346389502, now seen corresponding path program 2 times [2018-06-25 01:26:35,773 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:26:35,773 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:26:35,774 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:26:35,774 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:26:35,774 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:26:35,853 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:26:36,191 WARN ]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 01:26:36,192 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:26:36,192 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:26:36,192 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) [2018-06-25 01:26:36,207 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 01:26:36,292 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 01:26:36,292 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:26:36,295 INFO ]: Computing forward predicates... [2018-06-25 01:26:37,263 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:26:37,284 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:26:37,284 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-25 01:26:37,284 INFO ]: Interpolant automaton has 6 states [2018-06-25 01:26:37,284 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 01:26:37,284 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-25 01:26:37,284 INFO ]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2018-06-25 01:26:37,380 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:26:37,380 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 01:26:37,380 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 01:26:37,380 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-25 01:26:37,380 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:26:37,381 INFO ]: With dead ends: 9 [2018-06-25 01:26:37,381 INFO ]: Without dead ends: 9 [2018-06-25 01:26:37,381 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-25 01:26:37,381 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 01:26:37,382 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 01:26:37,382 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 01:26:37,382 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 01:26:37,382 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 01:26:37,382 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:26:37,382 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 01:26:37,383 INFO ]: Interpolant automaton has 6 states. [2018-06-25 01:26:37,383 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 01:26:37,383 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 01:26:37,383 INFO ]: Found error trace [2018-06-25 01:26:37,383 INFO ]: trace histogram [3, 1, 1, 1, 1, 1] [2018-06-25 01:26:37,383 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:26:37,383 INFO ]: Analyzing trace with hash 2146561288, now seen corresponding path program 3 times [2018-06-25 01:26:37,383 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:26:37,383 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:26:37,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:26:37,384 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:26:37,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:26:37,423 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:26:38,132 WARN ]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-25 01:26:38,343 WARN ]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 01:26:38,363 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:26:38,363 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:26:38,363 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 [2018-06-25 01:26:38,372 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 01:26:38,462 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 01:26:38,462 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:26:38,465 INFO ]: Computing forward predicates... [2018-06-25 01:26:44,658 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:26:44,679 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:26:44,680 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-25 01:26:44,680 INFO ]: Interpolant automaton has 7 states [2018-06-25 01:26:44,680 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 01:26:44,680 INFO ]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-06-25 01:26:44,680 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-06-25 01:26:44,814 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:26:44,814 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 01:26:44,814 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 01:26:44,814 INFO ]: Start accepts. Automaton has 7 states. Word has length 8 [2018-06-25 01:26:44,814 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:26:44,814 INFO ]: With dead ends: 10 [2018-06-25 01:26:44,814 INFO ]: Without dead ends: 10 [2018-06-25 01:26:44,815 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-06-25 01:26:44,815 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 01:26:44,816 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 01:26:44,816 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 01:26:44,817 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 01:26:44,817 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 01:26:44,817 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:26:44,817 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 01:26:44,817 INFO ]: Interpolant automaton has 7 states. [2018-06-25 01:26:44,817 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 01:26:44,817 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 01:26:44,817 INFO ]: Found error trace [2018-06-25 01:26:44,817 INFO ]: trace histogram [4, 1, 1, 1, 1, 1] [2018-06-25 01:26:44,818 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:26:44,818 INFO ]: Analyzing trace with hash 2118624450, now seen corresponding path program 4 times [2018-06-25 01:26:44,818 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:26:44,818 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:26:44,819 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:26:44,819 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:26:44,819 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:26:44,871 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:26:45,115 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:26:45,115 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:26:45,115 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 [2018-06-25 01:26:45,123 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 01:26:45,190 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 01:26:45,190 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:26:45,194 INFO ]: Computing forward predicates... [2018-06-25 01:26:52,891 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:26:55,279 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:26:55,298 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:26:55,299 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-06-25 01:26:55,299 INFO ]: Interpolant automaton has 8 states [2018-06-25 01:26:55,299 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 01:26:55,299 INFO ]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-06-25 01:26:55,300 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-25 01:26:55,508 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:26:55,509 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 01:26:55,509 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 01:26:55,509 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-25 01:26:55,509 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:26:55,509 INFO ]: With dead ends: 11 [2018-06-25 01:26:55,509 INFO ]: Without dead ends: 11 [2018-06-25 01:26:55,509 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2018-06-25 01:26:55,510 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 01:26:55,511 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 01:26:55,511 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 01:26:55,512 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 01:26:55,512 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-25 01:26:55,512 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:26:55,512 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 01:26:55,512 INFO ]: Interpolant automaton has 8 states. [2018-06-25 01:26:55,512 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 01:26:55,512 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 01:26:55,512 INFO ]: Found error trace [2018-06-25 01:26:55,512 INFO ]: trace histogram [5, 1, 1, 1, 1, 1] [2018-06-25 01:26:55,512 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:26:55,512 INFO ]: Analyzing trace with hash 1252582472, now seen corresponding path program 5 times [2018-06-25 01:26:55,513 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:26:55,513 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:26:55,513 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:26:55,513 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:26:55,513 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:26:55,605 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:26:56,055 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:26:56,055 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:26:56,055 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 01:26:56,063 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-25 01:26:56,160 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-25 01:26:56,160 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:26:56,165 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-25 01:27:39,903 INFO ]: Timeout while computing interpolants [2018-06-25 01:27:40,103 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 01:27:40,104 WARN ]: Verification canceled [2018-06-25 01:27:40,105 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-25 01:27:40,106 WARN ]: Timeout [2018-06-25 01:27:40,106 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 01:27:40 BasicIcfg [2018-06-25 01:27:40,106 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 01:27:40,107 INFO ]: Toolchain (without parser) took 66641.92 ms. Allocated memory was 309.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 258.3 MB in the beginning and 210.5 MB in the end (delta: 47.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 01:27:40,108 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.9 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 01:27:40,109 INFO ]: ChcToBoogie took 53.53 ms. Allocated memory is still 309.9 MB. Free memory was 258.3 MB in the beginning and 256.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:27:40,109 INFO ]: Boogie Preprocessor took 61.59 ms. Allocated memory is still 309.9 MB. Free memory was 256.3 MB in the beginning and 254.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:27:40,110 INFO ]: RCFGBuilder took 316.51 ms. Allocated memory is still 309.9 MB. Free memory was 254.3 MB in the beginning and 240.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:27:40,110 INFO ]: BlockEncodingV2 took 115.49 ms. Allocated memory is still 309.9 MB. Free memory was 240.3 MB in the beginning and 236.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:27:40,111 INFO ]: TraceAbstraction took 66083.79 ms. Allocated memory was 309.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 236.3 MB in the beginning and 210.5 MB in the end (delta: 25.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 01:27:40,115 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, 6 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.9 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 53.53 ms. Allocated memory is still 309.9 MB. Free memory was 258.3 MB in the beginning and 256.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 61.59 ms. Allocated memory is still 309.9 MB. Free memory was 256.3 MB in the beginning and 254.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 316.51 ms. Allocated memory is still 309.9 MB. Free memory was 254.3 MB in the beginning and 240.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 115.49 ms. Allocated memory is still 309.9 MB. Free memory was 240.3 MB in the beginning and 236.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 66083.79 ms. Allocated memory was 309.9 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 236.3 MB in the beginning and 210.5 MB in the end (delta: 25.8 MB). Peak memory consumption was 1.3 GB. 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 analyzing trace of length 11 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 22 quantified variables from 17 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. TIMEOUT Result, 66.0s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 0 SDslu, 51 SDs, 0 SdLazy, 33 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 1962 SizeOfPredicates, 24 NumberOfNonLiveVariables, 796 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 0/40 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/seq-len.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-25_01-27-40-134.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/seq-len.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-25_01-27-40-134.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/seq-len.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-25_01-27-40-134.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/seq-len.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_01-27-40-134.csv Completed graceful shutdown