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/pldi082_unbounded.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 01:20:47,063 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 01:20:47,068 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 01:20:47,080 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 01:20:47,080 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 01:20:47,081 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 01:20:47,084 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 01:20:47,087 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 01:20:47,088 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 01:20:47,090 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 01:20:47,090 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 01:20:47,091 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 01:20:47,091 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 01:20:47,092 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 01:20:47,096 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 01:20:47,096 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 01:20:47,098 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 01:20:47,107 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 01:20:47,109 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 01:20:47,110 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 01:20:47,111 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 01:20:47,113 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 01:20:47,114 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 01:20:47,115 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 01:20:47,116 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 01:20:47,116 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 01:20:47,117 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 01:20:47,118 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 01:20:47,119 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 01:20:47,119 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 01:20:47,119 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 01:20:47,120 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 01:20:47,120 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 01:20:47,121 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 01:20:47,122 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 01:20:47,123 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 01:20:47,142 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 01:20:47,142 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 01:20:47,143 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 01:20:47,143 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 01:20:47,144 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 01:20:47,144 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 01:20:47,144 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 01:20:47,144 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 01:20:47,145 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 01:20:47,145 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 01:20:47,145 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 01:20:47,145 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 01:20:47,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 01:20:47,146 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 01:20:47,146 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 01:20:47,146 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 01:20:47,146 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 01:20:47,146 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 01:20:47,146 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 01:20:47,147 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 01:20:47,147 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 01:20:47,148 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 01:20:47,148 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 01:20:47,201 INFO ]: Repository-Root is: /tmp [2018-06-25 01:20:47,217 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 01:20:47,224 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 01:20:47,225 INFO ]: Initializing SmtParser... [2018-06-25 01:20:47,225 INFO ]: SmtParser initialized [2018-06-25 01:20:47,226 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/pldi082_unbounded.c.smt2 [2018-06-25 01:20:47,228 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 01:20:47,324 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/pldi082_unbounded.c.smt2 unknown [2018-06-25 01:20:47,602 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/pldi082_unbounded.c.smt2 [2018-06-25 01:20:47,607 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 01:20:47,613 INFO ]: Walking toolchain with 5 elements. [2018-06-25 01:20:47,614 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 01:20:47,614 INFO ]: Initializing ChcToBoogie... [2018-06-25 01:20:47,614 INFO ]: ChcToBoogie initialized [2018-06-25 01:20:47,617 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 01:20:47" (1/1) ... [2018-06-25 01:20:47,684 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:47 Unit [2018-06-25 01:20:47,684 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 01:20:47,685 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 01:20:47,685 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 01:20:47,685 INFO ]: Boogie Preprocessor initialized [2018-06-25 01:20:47,703 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:47" (1/1) ... [2018-06-25 01:20:47,703 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:47" (1/1) ... [2018-06-25 01:20:47,710 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:47" (1/1) ... [2018-06-25 01:20:47,710 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:47" (1/1) ... [2018-06-25 01:20:47,715 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:47" (1/1) ... [2018-06-25 01:20:47,718 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:47" (1/1) ... [2018-06-25 01:20:47,719 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:47" (1/1) ... [2018-06-25 01:20:47,721 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 01:20:47,722 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 01:20:47,722 INFO ]: Initializing RCFGBuilder... [2018-06-25 01:20:47,722 INFO ]: RCFGBuilder initialized [2018-06-25 01:20:47,723 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:47" (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 01:20:47,736 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 01:20:47,736 INFO ]: Found specification of procedure gotoProc [2018-06-25 01:20:47,736 INFO ]: Found implementation of procedure gotoProc [2018-06-25 01:20:47,736 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 01:20:47,736 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 01:20:47,736 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 01:20:47,971 INFO ]: Using library mode [2018-06-25 01:20:47,972 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:20:47 BoogieIcfgContainer [2018-06-25 01:20:47,972 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 01:20:47,972 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-25 01:20:47,972 INFO ]: Initializing BlockEncodingV2... [2018-06-25 01:20:47,973 INFO ]: BlockEncodingV2 initialized [2018-06-25 01:20:47,974 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:20:47" (1/1) ... [2018-06-25 01:20:47,988 INFO ]: Initial Icfg 10 locations, 10 edges [2018-06-25 01:20:47,990 INFO ]: Using Remove infeasible edges [2018-06-25 01:20:47,991 INFO ]: Using Maximize final states [2018-06-25 01:20:47,991 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-25 01:20:47,991 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-25 01:20:47,995 INFO ]: Using Remove sink states [2018-06-25 01:20:47,996 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-25 01:20:47,996 INFO ]: Using Use SBE [2018-06-25 01:20:48,014 WARN ]: aborting because of expected exponential blowup for input size 37 [2018-06-25 01:20:48,015 INFO ]: SBE split 0 edges [2018-06-25 01:20:48,020 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-25 01:20:48,021 INFO ]: 0 new accepting states [2018-06-25 01:20:48,053 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-25 01:20:48,055 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 01:20:48,059 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-25 01:20:48,059 INFO ]: 0 new accepting states [2018-06-25 01:20:48,059 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-25 01:20:48,060 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 01:20:48,060 INFO ]: Encoded RCFG 6 locations, 6 edges [2018-06-25 01:20:48,060 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 01:20:48 BasicIcfg [2018-06-25 01:20:48,060 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-25 01:20:48,061 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 01:20:48,061 INFO ]: Initializing TraceAbstraction... [2018-06-25 01:20:48,064 INFO ]: TraceAbstraction initialized [2018-06-25 01:20:48,065 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 01:20:47" (1/4) ... [2018-06-25 01:20:48,066 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b40133e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 01:20:48, skipping insertion in model container [2018-06-25 01:20:48,066 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:47" (2/4) ... [2018-06-25 01:20:48,066 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b40133e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 01:20:48, skipping insertion in model container [2018-06-25 01:20:48,067 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:20:47" (3/4) ... [2018-06-25 01:20:48,067 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b40133e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 01:20:48, skipping insertion in model container [2018-06-25 01:20:48,067 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 01:20:48" (4/4) ... [2018-06-25 01:20:48,071 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-25 01:20:48,080 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 01:20:48,088 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 01:20:48,123 INFO ]: Using default assertion order modulation [2018-06-25 01:20:48,123 INFO ]: Interprodecural is true [2018-06-25 01:20:48,123 INFO ]: Hoare is false [2018-06-25 01:20:48,123 INFO ]: Compute interpolants for FPandBP [2018-06-25 01:20:48,123 INFO ]: Backedges is TWOTRACK [2018-06-25 01:20:48,123 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 01:20:48,123 INFO ]: Difference is false [2018-06-25 01:20:48,123 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 01:20:48,124 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 01:20:48,137 INFO ]: Start isEmpty. Operand 6 states. [2018-06-25 01:20:48,148 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-25 01:20:48,148 INFO ]: Found error trace [2018-06-25 01:20:48,149 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-25 01:20:48,149 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:20:48,154 INFO ]: Analyzing trace with hash 35402562, now seen corresponding path program 1 times [2018-06-25 01:20:48,156 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:20:48,156 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:20:48,192 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:48,192 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:20:48,192 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:48,231 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:48,319 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:48,322 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 01:20:48,322 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 01:20:48,324 INFO ]: Interpolant automaton has 3 states [2018-06-25 01:20:48,339 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 01:20:48,340 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 01:20:48,346 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-25 01:20:48,420 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:20:48,420 INFO ]: Finished difference Result 7 states and 7 transitions. [2018-06-25 01:20:48,421 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 01:20:48,422 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-25 01:20:48,422 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:20:48,429 INFO ]: With dead ends: 7 [2018-06-25 01:20:48,429 INFO ]: Without dead ends: 7 [2018-06-25 01:20:48,430 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 01:20:48,442 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-25 01:20:48,460 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-25 01:20:48,462 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-25 01:20:48,462 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-06-25 01:20:48,463 INFO ]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-06-25 01:20:48,463 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:20:48,463 INFO ]: Abstraction has 7 states and 7 transitions. [2018-06-25 01:20:48,463 INFO ]: Interpolant automaton has 3 states. [2018-06-25 01:20:48,464 INFO ]: Start isEmpty. Operand 7 states and 7 transitions. [2018-06-25 01:20:48,466 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 01:20:48,466 INFO ]: Found error trace [2018-06-25 01:20:48,466 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 01:20:48,466 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:20:48,466 INFO ]: Analyzing trace with hash 1097183593, now seen corresponding path program 1 times [2018-06-25 01:20:48,466 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:20:48,466 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:20:48,467 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:48,467 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:20:48,467 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:48,512 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:48,802 WARN ]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-25 01:20:48,803 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:48,803 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:20:48,803 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 01:20:48,810 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:20:48,860 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:48,869 INFO ]: Computing forward predicates... [2018-06-25 01:20:49,022 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:49,042 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:20:49,042 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-25 01:20:49,042 INFO ]: Interpolant automaton has 4 states [2018-06-25 01:20:49,042 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 01:20:49,042 INFO ]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-25 01:20:49,043 INFO ]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-06-25 01:20:49,109 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:20:49,109 INFO ]: Finished difference Result 8 states and 8 transitions. [2018-06-25 01:20:49,110 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 01:20:49,110 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-25 01:20:49,110 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:20:49,110 INFO ]: With dead ends: 8 [2018-06-25 01:20:49,110 INFO ]: Without dead ends: 8 [2018-06-25 01:20:49,111 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-25 01:20:49,111 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-25 01:20:49,112 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-25 01:20:49,112 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 01:20:49,113 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-06-25 01:20:49,113 INFO ]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-06-25 01:20:49,113 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:20:49,113 INFO ]: Abstraction has 8 states and 8 transitions. [2018-06-25 01:20:49,113 INFO ]: Interpolant automaton has 4 states. [2018-06-25 01:20:49,113 INFO ]: Start isEmpty. Operand 8 states and 8 transitions. [2018-06-25 01:20:49,113 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 01:20:49,113 INFO ]: Found error trace [2018-06-25 01:20:49,113 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-25 01:20:49,113 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:20:49,113 INFO ]: Analyzing trace with hash -347342814, now seen corresponding path program 2 times [2018-06-25 01:20:49,113 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:20:49,113 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:20:49,117 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:49,117 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:20:49,117 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:49,171 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:49,282 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:49,282 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:20:49,282 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 [2018-06-25 01:20:49,288 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 01:20:49,368 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 01:20:49,368 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:49,371 INFO ]: Computing forward predicates... [2018-06-25 01:20:50,221 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:50,253 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:20:50,253 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-25 01:20:50,253 INFO ]: Interpolant automaton has 6 states [2018-06-25 01:20:50,253 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 01:20:50,253 INFO ]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-25 01:20:50,253 INFO ]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2018-06-25 01:20:50,394 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:20:50,394 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 01:20:50,395 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 01:20:50,395 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-25 01:20:50,395 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:20:50,396 INFO ]: With dead ends: 9 [2018-06-25 01:20:50,396 INFO ]: Without dead ends: 9 [2018-06-25 01:20:50,396 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2018-06-25 01:20:50,396 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 01:20:50,397 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 01:20:50,397 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 01:20:50,398 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 01:20:50,398 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 01:20:50,398 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:20:50,398 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 01:20:50,398 INFO ]: Interpolant automaton has 6 states. [2018-06-25 01:20:50,398 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 01:20:50,398 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 01:20:50,398 INFO ]: Found error trace [2018-06-25 01:20:50,398 INFO ]: trace histogram [3, 1, 1, 1, 1, 1] [2018-06-25 01:20:50,398 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:20:50,399 INFO ]: Analyzing trace with hash 2116978825, now seen corresponding path program 3 times [2018-06-25 01:20:50,399 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:20:50,399 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:20:50,399 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:50,399 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:20:50,399 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:50,434 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:50,732 WARN ]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-25 01:20:50,872 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:50,872 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:20:50,872 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 01:20:50,878 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 01:20:50,935 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 01:20:50,935 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:50,938 INFO ]: Computing forward predicates... [2018-06-25 01:20:52,978 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:53,009 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:20:53,009 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-25 01:20:53,010 INFO ]: Interpolant automaton has 7 states [2018-06-25 01:20:53,010 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 01:20:53,010 INFO ]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-25 01:20:53,010 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-06-25 01:20:54,442 WARN ]: Spent 1.17 s on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-06-25 01:20:54,937 WARN ]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-25 01:20:55,080 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:20:55,080 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 01:20:55,080 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 01:20:55,080 INFO ]: Start accepts. Automaton has 7 states. Word has length 8 [2018-06-25 01:20:55,080 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:20:55,081 INFO ]: With dead ends: 10 [2018-06-25 01:20:55,081 INFO ]: Without dead ends: 10 [2018-06-25 01:20:55,081 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-06-25 01:20:55,081 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 01:20:55,082 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 01:20:55,082 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 01:20:55,083 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 01:20:55,083 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 01:20:55,083 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:20:55,083 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 01:20:55,083 INFO ]: Interpolant automaton has 7 states. [2018-06-25 01:20:55,083 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 01:20:55,083 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 01:20:55,083 INFO ]: Found error trace [2018-06-25 01:20:55,083 INFO ]: trace histogram [4, 1, 1, 1, 1, 1] [2018-06-25 01:20:55,083 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:20:55,083 INFO ]: Analyzing trace with hash 1201538306, now seen corresponding path program 4 times [2018-06-25 01:20:55,083 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:20:55,083 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:20:55,084 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:55,084 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:20:55,084 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:55,129 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:55,299 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:55,299 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:20:55,299 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 01:20:55,310 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 01:20:55,355 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 01:20:55,355 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:55,358 INFO ]: Computing forward predicates... [2018-06-25 01:20:57,003 WARN ]: Spent 227.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 10 [2018-06-25 01:20:57,218 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:00,237 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:00,678 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:21:00,708 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:21:00,708 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-06-25 01:21:00,709 INFO ]: Interpolant automaton has 9 states [2018-06-25 01:21:00,709 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-25 01:21:00,709 INFO ]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-06-25 01:21:00,709 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-06-25 01:21:01,245 WARN ]: Spent 374.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 3 [2018-06-25 01:21:01,953 WARN ]: Spent 596.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-06-25 01:21:02,040 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:21:02,040 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 01:21:02,129 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 01:21:02,129 INFO ]: Start accepts. Automaton has 9 states. Word has length 9 [2018-06-25 01:21:02,129 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:21:02,129 INFO ]: With dead ends: 11 [2018-06-25 01:21:02,129 INFO ]: Without dead ends: 11 [2018-06-25 01:21:02,130 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2018-06-25 01:21:02,130 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 01:21:02,131 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 01:21:02,131 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 01:21:02,131 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 01:21:02,131 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-25 01:21:02,131 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:21:02,131 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 01:21:02,131 INFO ]: Interpolant automaton has 9 states. [2018-06-25 01:21:02,131 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 01:21:02,132 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 01:21:02,132 INFO ]: Found error trace [2018-06-25 01:21:02,132 INFO ]: trace histogram [5, 1, 1, 1, 1, 1] [2018-06-25 01:21:02,132 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:21:02,132 INFO ]: Analyzing trace with hash -1407314007, now seen corresponding path program 5 times [2018-06-25 01:21:02,132 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:21:02,132 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:21:02,132 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:21:02,132 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:21:02,132 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:21:02,199 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:21:02,769 WARN ]: Spent 347.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 16 [2018-06-25 01:21:02,826 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:21:02,826 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:21:02,826 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 01:21:02,836 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-25 01:21:02,880 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-25 01:21:02,880 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:21:02,884 INFO ]: Computing forward predicates... [2018-06-25 01:21:25,298 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:25,372 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:45,355 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:45,360 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:45,449 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:45,453 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:45,483 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:45,593 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:45,627 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:45,633 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:45,721 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:45,870 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:45,963 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:45,964 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 01:21:45,986 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 01:21:46,088 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:46,161 WARN ]: expecting exponential blowup for input size 12 [2018-06-25 01:21:46,268 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 01:21:46,317 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:46,321 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:46,397 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:46,626 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:46,629 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:46,753 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:46,759 WARN ]: expecting exponential blowup for input size 9 [2018-06-25 01:21:46,780 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:46,818 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:46,913 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:46,963 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:47,000 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:47,047 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 01:21:47,213 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:47,385 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 01:21:47,557 WARN ]: expecting exponential blowup for input size 8 [2018-06-25 01:21:47,694 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:47,698 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:47,707 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:21:47,789 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:47,851 WARN ]: expecting exponential blowup for input size 10 [2018-06-25 01:21:47,994 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:48,011 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:48,021 WARN ]: expecting exponential blowup for input size 8 Received shutdown request... [2018-06-25 01:21:53,693 INFO ]: Timeout while computing interpolants [2018-06-25 01:21:53,894 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 01:21:53,894 WARN ]: Verification canceled [2018-06-25 01:21:53,897 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-25 01:21:53,899 WARN ]: Timeout [2018-06-25 01:21:53,899 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 01:21:53 BasicIcfg [2018-06-25 01:21:53,899 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 01:21:53,901 INFO ]: Toolchain (without parser) took 66292.80 ms. Allocated memory was 304.6 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 257.0 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 3.6 GB. [2018-06-25 01:21:53,902 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. [2018-06-25 01:21:53,903 INFO ]: ChcToBoogie took 70.55 ms. Allocated memory is still 304.6 MB. Free memory was 257.0 MB in the beginning and 255.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:21:53,904 INFO ]: Boogie Preprocessor took 36.75 ms. Allocated memory is still 304.6 MB. Free memory was 255.0 MB in the beginning and 253.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:21:53,905 INFO ]: RCFGBuilder took 249.62 ms. Allocated memory is still 304.6 MB. Free memory was 253.0 MB in the beginning and 243.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:21:53,911 INFO ]: BlockEncodingV2 took 88.23 ms. Allocated memory is still 304.6 MB. Free memory was 243.0 MB in the beginning and 240.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:21:53,912 INFO ]: TraceAbstraction took 65837.84 ms. Allocated memory was 304.6 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 239.0 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-25 01:21:53,919 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 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 70.55 ms. Allocated memory is still 304.6 MB. Free memory was 257.0 MB in the beginning and 255.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 36.75 ms. Allocated memory is still 304.6 MB. Free memory was 255.0 MB in the beginning and 253.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 249.62 ms. Allocated memory is still 304.6 MB. Free memory was 253.0 MB in the beginning and 243.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 88.23 ms. Allocated memory is still 304.6 MB. Free memory was 243.0 MB in the beginning and 240.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65837.84 ms. Allocated memory was 304.6 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 239.0 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 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 PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 129253 quantified variables from 12 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. TIMEOUT Result, 65.7s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 3.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 0 SDslu, 39 SDs, 0 SdLazy, 29 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 5.1s 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, 0.3s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 1681 SizeOfPredicates, 20 NumberOfNonLiveVariables, 598 ConjunctsInSsa, 101 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/pldi082_unbounded.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-25_01-21-53-936.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/pldi082_unbounded.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-25_01-21-53-936.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/pldi082_unbounded.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-25_01-21-53-936.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/pldi082_unbounded.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_01-21-53-936.csv Completed graceful shutdown