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/large_const.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 01:04:29,685 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 01:04:29,687 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 01:04:29,703 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 01:04:29,703 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 01:04:29,704 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 01:04:29,705 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 01:04:29,708 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 01:04:29,709 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 01:04:29,712 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 01:04:29,713 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 01:04:29,713 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 01:04:29,714 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 01:04:29,715 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 01:04:29,716 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 01:04:29,717 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 01:04:29,722 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 01:04:29,733 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 01:04:29,734 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 01:04:29,735 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 01:04:29,736 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 01:04:29,739 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 01:04:29,739 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 01:04:29,739 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 01:04:29,740 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 01:04:29,747 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 01:04:29,748 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 01:04:29,748 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 01:04:29,749 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 01:04:29,750 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 01:04:29,750 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 01:04:29,751 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 01:04:29,751 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 01:04:29,754 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 01:04:29,755 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 01:04:29,755 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 01:04:29,774 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 01:04:29,774 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 01:04:29,774 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 01:04:29,774 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 01:04:29,775 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 01:04:29,776 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 01:04:29,776 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 01:04:29,776 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 01:04:29,776 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 01:04:29,777 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 01:04:29,777 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 01:04:29,777 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 01:04:29,777 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 01:04:29,777 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 01:04:29,777 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 01:04:29,778 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 01:04:29,778 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 01:04:29,778 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 01:04:29,778 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 01:04:29,778 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 01:04:29,779 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 01:04:29,780 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 01:04:29,780 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 01:04:29,848 INFO ]: Repository-Root is: /tmp [2018-06-25 01:04:29,870 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 01:04:29,879 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 01:04:29,881 INFO ]: Initializing SmtParser... [2018-06-25 01:04:29,881 INFO ]: SmtParser initialized [2018-06-25 01:04:29,882 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/large_const.c.smt2 [2018-06-25 01:04:29,884 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 01:04:29,980 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/large_const.c.smt2 unknown [2018-06-25 01:04:30,355 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/large_const.c.smt2 [2018-06-25 01:04:30,360 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 01:04:30,366 INFO ]: Walking toolchain with 5 elements. [2018-06-25 01:04:30,367 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 01:04:30,367 INFO ]: Initializing ChcToBoogie... [2018-06-25 01:04:30,367 INFO ]: ChcToBoogie initialized [2018-06-25 01:04:30,371 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 01:04:30" (1/1) ... [2018-06-25 01:04:30,428 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:04:30 Unit [2018-06-25 01:04:30,428 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 01:04:30,429 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 01:04:30,429 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 01:04:30,429 INFO ]: Boogie Preprocessor initialized [2018-06-25 01:04:30,457 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:04:30" (1/1) ... [2018-06-25 01:04:30,457 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:04:30" (1/1) ... [2018-06-25 01:04:30,477 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:04:30" (1/1) ... [2018-06-25 01:04:30,477 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:04:30" (1/1) ... [2018-06-25 01:04:30,484 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:04:30" (1/1) ... [2018-06-25 01:04:30,486 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:04:30" (1/1) ... [2018-06-25 01:04:30,488 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:04:30" (1/1) ... [2018-06-25 01:04:30,491 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 01:04:30,491 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 01:04:30,491 INFO ]: Initializing RCFGBuilder... [2018-06-25 01:04:30,491 INFO ]: RCFGBuilder initialized [2018-06-25 01:04:30,492 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:04:30" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 01:04:30,529 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 01:04:30,529 INFO ]: Found specification of procedure gotoProc [2018-06-25 01:04:30,529 INFO ]: Found implementation of procedure gotoProc [2018-06-25 01:04:30,529 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 01:04:30,529 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 01:04:30,529 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 01:04:30,837 INFO ]: Using library mode [2018-06-25 01:04:30,837 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:04:30 BoogieIcfgContainer [2018-06-25 01:04:30,837 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 01:04:30,838 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-25 01:04:30,838 INFO ]: Initializing BlockEncodingV2... [2018-06-25 01:04:30,839 INFO ]: BlockEncodingV2 initialized [2018-06-25 01:04:30,840 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:04:30" (1/1) ... [2018-06-25 01:04:30,858 INFO ]: Initial Icfg 10 locations, 10 edges [2018-06-25 01:04:30,859 INFO ]: Using Remove infeasible edges [2018-06-25 01:04:30,860 INFO ]: Using Maximize final states [2018-06-25 01:04:30,860 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-25 01:04:30,861 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-25 01:04:30,863 INFO ]: Using Remove sink states [2018-06-25 01:04:30,863 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-25 01:04:30,863 INFO ]: Using Use SBE [2018-06-25 01:04:30,868 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:04:30,896 WARN ]: aborting because of expected exponential blowup for input size 49 [2018-06-25 01:04:30,897 INFO ]: SBE split 0 edges [2018-06-25 01:04:30,903 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-25 01:04:30,905 INFO ]: 0 new accepting states [2018-06-25 01:04:30,954 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-25 01:04:30,956 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 01:04:30,960 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-25 01:04:30,960 INFO ]: 0 new accepting states [2018-06-25 01:04:30,960 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-25 01:04:30,960 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 01:04:30,960 INFO ]: Encoded RCFG 6 locations, 6 edges [2018-06-25 01:04:30,961 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 01:04:30 BasicIcfg [2018-06-25 01:04:30,961 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-25 01:04:30,965 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 01:04:30,965 INFO ]: Initializing TraceAbstraction... [2018-06-25 01:04:30,968 INFO ]: TraceAbstraction initialized [2018-06-25 01:04:30,968 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 01:04:30" (1/4) ... [2018-06-25 01:04:30,969 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223d948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 01:04:30, skipping insertion in model container [2018-06-25 01:04:30,970 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:04:30" (2/4) ... [2018-06-25 01:04:30,970 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223d948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 01:04:30, skipping insertion in model container [2018-06-25 01:04:30,970 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:04:30" (3/4) ... [2018-06-25 01:04:30,970 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223d948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 01:04:30, skipping insertion in model container [2018-06-25 01:04:30,970 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 01:04:30" (4/4) ... [2018-06-25 01:04:30,972 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-25 01:04:30,981 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 01:04:30,990 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 01:04:31,032 INFO ]: Using default assertion order modulation [2018-06-25 01:04:31,032 INFO ]: Interprodecural is true [2018-06-25 01:04:31,032 INFO ]: Hoare is false [2018-06-25 01:04:31,032 INFO ]: Compute interpolants for FPandBP [2018-06-25 01:04:31,032 INFO ]: Backedges is TWOTRACK [2018-06-25 01:04:31,032 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 01:04:31,032 INFO ]: Difference is false [2018-06-25 01:04:31,032 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 01:04:31,032 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 01:04:31,042 INFO ]: Start isEmpty. Operand 6 states. [2018-06-25 01:04:31,052 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-25 01:04:31,052 INFO ]: Found error trace [2018-06-25 01:04:31,062 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-25 01:04:31,062 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:04:31,068 INFO ]: Analyzing trace with hash 35402562, now seen corresponding path program 1 times [2018-06-25 01:04:31,070 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:04:31,070 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:04:31,107 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:31,107 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:04:31,107 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:31,163 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:04:31,257 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:04:31,259 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 01:04:31,259 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 01:04:31,261 INFO ]: Interpolant automaton has 3 states [2018-06-25 01:04:31,272 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 01:04:31,272 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 01:04:31,275 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-25 01:04:31,342 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:04:31,342 INFO ]: Finished difference Result 7 states and 7 transitions. [2018-06-25 01:04:31,342 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 01:04:31,343 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-25 01:04:31,343 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:04:31,350 INFO ]: With dead ends: 7 [2018-06-25 01:04:31,350 INFO ]: Without dead ends: 7 [2018-06-25 01:04:31,351 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 01:04:31,364 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-25 01:04:31,385 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-25 01:04:31,387 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-25 01:04:31,388 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-06-25 01:04:31,389 INFO ]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-06-25 01:04:31,389 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:04:31,389 INFO ]: Abstraction has 7 states and 7 transitions. [2018-06-25 01:04:31,389 INFO ]: Interpolant automaton has 3 states. [2018-06-25 01:04:31,389 INFO ]: Start isEmpty. Operand 7 states and 7 transitions. [2018-06-25 01:04:31,389 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 01:04:31,389 INFO ]: Found error trace [2018-06-25 01:04:31,389 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 01:04:31,390 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:04:31,391 INFO ]: Analyzing trace with hash 1097213384, now seen corresponding path program 1 times [2018-06-25 01:04:31,391 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:04:31,391 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:04:31,392 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:31,392 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:04:31,392 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:31,471 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:04:31,818 WARN ]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 01:04:31,818 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:04:31,818 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:04:31,819 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 01:04:31,826 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:04:31,904 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:04:31,915 INFO ]: Computing forward predicates... [2018-06-25 01:04:32,262 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:04:32,287 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:04:32,287 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 01:04:32,287 INFO ]: Interpolant automaton has 5 states [2018-06-25 01:04:32,288 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 01:04:32,288 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 01:04:32,288 INFO ]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-06-25 01:04:32,439 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:04:32,440 INFO ]: Finished difference Result 8 states and 8 transitions. [2018-06-25 01:04:32,440 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 01:04:32,440 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-25 01:04:32,441 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:04:32,441 INFO ]: With dead ends: 8 [2018-06-25 01:04:32,441 INFO ]: Without dead ends: 8 [2018-06-25 01:04:32,442 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 01:04:32,442 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-25 01:04:32,443 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-25 01:04:32,443 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 01:04:32,443 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-06-25 01:04:32,443 INFO ]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-06-25 01:04:32,443 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:04:32,443 INFO ]: Abstraction has 8 states and 8 transitions. [2018-06-25 01:04:32,444 INFO ]: Interpolant automaton has 5 states. [2018-06-25 01:04:32,444 INFO ]: Start isEmpty. Operand 8 states and 8 transitions. [2018-06-25 01:04:32,445 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 01:04:32,445 INFO ]: Found error trace [2018-06-25 01:04:32,445 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-25 01:04:32,445 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:04:32,446 INFO ]: Analyzing trace with hash -346389502, now seen corresponding path program 2 times [2018-06-25 01:04:32,446 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:04:32,446 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:04:32,447 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:32,447 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:04:32,447 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:32,554 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:04:32,888 WARN ]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 01:04:33,083 WARN ]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 01:04:33,084 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:04:33,084 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:04:33,084 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 01:04:33,104 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 01:04:33,197 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 01:04:33,197 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:04:33,203 INFO ]: Computing forward predicates... [2018-06-25 01:04:35,934 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:04:35,968 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:04:35,969 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-25 01:04:35,969 INFO ]: Interpolant automaton has 6 states [2018-06-25 01:04:35,969 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 01:04:35,969 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-25 01:04:35,969 INFO ]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2018-06-25 01:04:36,730 WARN ]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-25 01:04:36,784 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:04:36,784 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 01:04:36,785 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 01:04:36,785 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-25 01:04:36,785 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:04:36,785 INFO ]: With dead ends: 9 [2018-06-25 01:04:36,785 INFO ]: Without dead ends: 9 [2018-06-25 01:04:36,786 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-25 01:04:36,786 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 01:04:36,787 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 01:04:36,787 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 01:04:36,787 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 01:04:36,787 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 01:04:36,787 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:04:36,787 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 01:04:36,787 INFO ]: Interpolant automaton has 6 states. [2018-06-25 01:04:36,787 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 01:04:36,787 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 01:04:36,787 INFO ]: Found error trace [2018-06-25 01:04:36,788 INFO ]: trace histogram [3, 1, 1, 1, 1, 1] [2018-06-25 01:04:36,788 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:04:36,788 INFO ]: Analyzing trace with hash 2146561288, now seen corresponding path program 3 times [2018-06-25 01:04:36,788 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:04:36,788 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:04:36,791 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:36,791 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:04:36,791 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:36,868 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:04:37,244 WARN ]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-25 01:04:37,457 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:04:37,457 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:04:37,457 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 01:04:37,464 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 01:04:37,587 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 01:04:37,587 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:04:37,591 INFO ]: Computing forward predicates... [2018-06-25 01:04:39,344 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:04:39,379 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:04:39,379 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-06-25 01:04:39,379 INFO ]: Interpolant automaton has 6 states [2018-06-25 01:04:39,380 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 01:04:39,380 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-25 01:04:39,380 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-25 01:04:39,545 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:04:39,545 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 01:04:39,545 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 01:04:39,545 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-25 01:04:39,545 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:04:39,545 INFO ]: With dead ends: 10 [2018-06-25 01:04:39,545 INFO ]: Without dead ends: 10 [2018-06-25 01:04:39,546 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-06-25 01:04:39,546 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 01:04:39,547 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 01:04:39,547 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 01:04:39,548 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 01:04:39,548 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 01:04:39,548 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:04:39,548 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 01:04:39,548 INFO ]: Interpolant automaton has 6 states. [2018-06-25 01:04:39,548 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 01:04:39,548 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 01:04:39,548 INFO ]: Found error trace [2018-06-25 01:04:39,548 INFO ]: trace histogram [4, 1, 1, 1, 1, 1] [2018-06-25 01:04:39,548 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:04:39,548 INFO ]: Analyzing trace with hash 2118624450, now seen corresponding path program 4 times [2018-06-25 01:04:39,548 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:04:39,548 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:04:39,549 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:39,549 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:04:39,549 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:39,603 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:04:39,874 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:04:39,874 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:04:39,874 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 01:04:39,882 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 01:04:39,985 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 01:04:39,985 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:04:39,989 INFO ]: Computing forward predicates... [2018-06-25 01:04:44,156 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:04:44,191 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:04:44,191 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-06-25 01:04:44,191 INFO ]: Interpolant automaton has 8 states [2018-06-25 01:04:44,191 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 01:04:44,191 INFO ]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-06-25 01:04:44,192 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-25 01:04:45,684 WARN ]: Spent 1.20 s on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-06-25 01:04:45,847 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:04:45,847 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 01:04:45,847 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 01:04:45,847 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-25 01:04:45,847 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:04:45,848 INFO ]: With dead ends: 11 [2018-06-25 01:04:45,848 INFO ]: Without dead ends: 11 [2018-06-25 01:04:45,848 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2018-06-25 01:04:45,848 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 01:04:45,849 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 01:04:45,849 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 01:04:45,850 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 01:04:45,850 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-25 01:04:45,850 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:04:45,850 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 01:04:45,850 INFO ]: Interpolant automaton has 8 states. [2018-06-25 01:04:45,850 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 01:04:45,850 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 01:04:45,850 INFO ]: Found error trace [2018-06-25 01:04:45,850 INFO ]: trace histogram [5, 1, 1, 1, 1, 1] [2018-06-25 01:04:45,850 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:04:45,850 INFO ]: Analyzing trace with hash 1252582472, now seen corresponding path program 5 times [2018-06-25 01:04:45,850 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:04:45,850 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:04:45,851 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:45,851 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:04:45,851 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:45,928 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:04:46,685 WARN ]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-25 01:04:46,918 WARN ]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 01:04:47,196 WARN ]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-25 01:04:47,499 WARN ]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 01:04:47,708 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:04:47,708 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:04:47,708 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 01:04:47,717 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-25 01:04:47,798 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-25 01:04:47,798 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:04:47,803 INFO ]: Computing forward predicates... [2018-06-25 01:04:49,295 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:04:49,315 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:04:49,315 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-25 01:04:49,316 INFO ]: Interpolant automaton has 9 states [2018-06-25 01:04:49,316 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-25 01:04:49,316 INFO ]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-06-25 01:04:49,316 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-25 01:04:49,442 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-06-25 01:04:49,629 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:04:49,629 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-25 01:04:49,629 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-25 01:04:49,629 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-25 01:04:49,630 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:04:49,630 INFO ]: With dead ends: 12 [2018-06-25 01:04:49,630 INFO ]: Without dead ends: 12 [2018-06-25 01:04:49,630 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2018-06-25 01:04:49,630 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 01:04:49,631 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-25 01:04:49,631 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-25 01:04:49,632 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-25 01:04:49,632 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-25 01:04:49,632 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:04:49,632 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-25 01:04:49,632 INFO ]: Interpolant automaton has 9 states. [2018-06-25 01:04:49,632 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-25 01:04:49,632 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 01:04:49,632 INFO ]: Found error trace [2018-06-25 01:04:49,632 INFO ]: trace histogram [6, 1, 1, 1, 1, 1] [2018-06-25 01:04:49,632 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:04:49,633 INFO ]: Analyzing trace with hash 175084930, now seen corresponding path program 6 times [2018-06-25 01:04:49,633 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:04:49,633 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:04:49,633 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:49,633 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:04:49,633 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:04:49,712 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:04:50,034 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2018-06-25 01:04:50,119 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:04:50,120 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:04:50,120 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 01:04:50,126 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-25 01:04:50,255 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-06-25 01:04:50,255 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:04:50,261 INFO ]: Computing forward predicates... [2018-06-25 01:05:20,414 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:05:21,065 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:05:21,901 WARN ]: Simplifying disjunction of 6240 conjuctions. This might take some time... [2018-06-25 01:05:24,191 INFO ]: Simplified to disjunction of 6240 conjuctions. [2018-06-25 01:05:24,224 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:05:25,339 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:05:25,359 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:05:25,453 WARN ]: Simplifying disjunction of 6558 conjuctions. This might take some time... [2018-06-25 01:05:28,175 INFO ]: Simplified to disjunction of 6558 conjuctions. Received shutdown request... [2018-06-25 01:05:32,187 INFO ]: Timeout while computing interpolants [2018-06-25 01:05:32,388 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 01:05:32,388 WARN ]: Verification canceled [2018-06-25 01:05:32,390 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-25 01:05:32,391 WARN ]: Timeout [2018-06-25 01:05:32,391 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 01:05:32 BasicIcfg [2018-06-25 01:05:32,391 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 01:05:32,392 INFO ]: Toolchain (without parser) took 62031.58 ms. Allocated memory was 309.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 255.7 MB in the beginning and 703.6 MB in the end (delta: -447.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 01:05:32,393 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 01:05:32,393 INFO ]: ChcToBoogie took 61.67 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 251.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:05:32,394 INFO ]: Boogie Preprocessor took 61.75 ms. Allocated memory is still 309.3 MB. Free memory is still 251.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 01:05:32,394 INFO ]: RCFGBuilder took 346.10 ms. Allocated memory is still 309.3 MB. Free memory was 251.8 MB in the beginning and 235.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:05:32,394 INFO ]: BlockEncodingV2 took 123.15 ms. Allocated memory is still 309.3 MB. Free memory was 235.8 MB in the beginning and 231.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:05:32,395 INFO ]: TraceAbstraction took 61426.32 ms. Allocated memory was 309.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 231.8 MB in the beginning and 703.6 MB in the end (delta: -471.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 01:05:32,398 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 0.10 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 61.67 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 251.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 61.75 ms. Allocated memory is still 309.3 MB. Free memory is still 251.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 346.10 ms. Allocated memory is still 309.3 MB. Free memory was 251.8 MB in the beginning and 235.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 123.15 ms. Allocated memory is still 309.3 MB. Free memory was 235.8 MB in the beginning and 231.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 61426.32 ms. Allocated memory was 309.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 231.8 MB in the beginning and 703.6 MB in the end (delta: -471.8 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 12 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 66512 quantified variables from 15 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. TIMEOUT Result, 61.3s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 72 SDs, 0 SdLazy, 43 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 29 SyntacticMatches, 14 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 2501 SizeOfPredicates, 30 NumberOfNonLiveVariables, 1305 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/70 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/large_const.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-25_01-05-32-409.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/large_const.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-25_01-05-32-409.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/large_const.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-25_01-05-32-409.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/large_const.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_01-05-32-409.csv Completed graceful shutdown