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/NetBSD_loop_int.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 01:20:43,714 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 01:20:43,715 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 01:20:43,727 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 01:20:43,728 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 01:20:43,729 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 01:20:43,730 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 01:20:43,734 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 01:20:43,735 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 01:20:43,736 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 01:20:43,738 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 01:20:43,739 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 01:20:43,740 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 01:20:43,741 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 01:20:43,742 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 01:20:43,745 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 01:20:43,747 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 01:20:43,760 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 01:20:43,761 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 01:20:43,762 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 01:20:43,763 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 01:20:43,765 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-25 01:20:43,775 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 01:20:43,776 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 01:20:43,777 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 01:20:43,777 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 01:20:43,777 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 01:20:43,781 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 01:20:43,782 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 01:20:43,795 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 01:20:43,795 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 01:20:43,796 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 01:20:43,796 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 01:20:43,797 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 01:20:43,797 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 01:20:43,797 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 01:20:43,797 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 01:20:43,797 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 01:20:43,798 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 01:20:43,798 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 01:20:43,798 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 01:20:43,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 01:20:43,798 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 01:20:43,799 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 01:20:43,799 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 01:20:43,799 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 01:20:43,799 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 01:20:43,799 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 01:20:43,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 01:20:43,800 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 01:20:43,801 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 01:20:43,801 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 01:20:43,836 INFO ]: Repository-Root is: /tmp [2018-06-25 01:20:43,853 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 01:20:43,857 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 01:20:43,857 INFO ]: Initializing SmtParser... [2018-06-25 01:20:43,858 INFO ]: SmtParser initialized [2018-06-25 01:20:43,859 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/NetBSD_loop_int.c.smt2 [2018-06-25 01:20:43,860 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 01:20:43,954 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/NetBSD_loop_int.c.smt2 unknown [2018-06-25 01:20:44,263 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/NetBSD_loop_int.c.smt2 [2018-06-25 01:20:44,268 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 01:20:44,273 INFO ]: Walking toolchain with 5 elements. [2018-06-25 01:20:44,273 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 01:20:44,273 INFO ]: Initializing ChcToBoogie... [2018-06-25 01:20:44,274 INFO ]: ChcToBoogie initialized [2018-06-25 01:20:44,276 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 01:20:44" (1/1) ... [2018-06-25 01:20:44,330 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:44 Unit [2018-06-25 01:20:44,330 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 01:20:44,331 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 01:20:44,331 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 01:20:44,331 INFO ]: Boogie Preprocessor initialized [2018-06-25 01:20:44,346 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:44" (1/1) ... [2018-06-25 01:20:44,346 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:44" (1/1) ... [2018-06-25 01:20:44,354 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:44" (1/1) ... [2018-06-25 01:20:44,355 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:44" (1/1) ... [2018-06-25 01:20:44,367 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:44" (1/1) ... [2018-06-25 01:20:44,368 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:44" (1/1) ... [2018-06-25 01:20:44,370 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:44" (1/1) ... [2018-06-25 01:20:44,372 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 01:20:44,373 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 01:20:44,373 INFO ]: Initializing RCFGBuilder... [2018-06-25 01:20:44,373 INFO ]: RCFGBuilder initialized [2018-06-25 01:20:44,374 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:44" (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 01:20:44,393 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 01:20:44,393 INFO ]: Found specification of procedure gotoProc [2018-06-25 01:20:44,393 INFO ]: Found implementation of procedure gotoProc [2018-06-25 01:20:44,393 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 01:20:44,393 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 01:20:44,393 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 01:20:44,653 INFO ]: Using library mode [2018-06-25 01:20:44,654 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:20:44 BoogieIcfgContainer [2018-06-25 01:20:44,654 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 01:20:44,654 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-25 01:20:44,654 INFO ]: Initializing BlockEncodingV2... [2018-06-25 01:20:44,655 INFO ]: BlockEncodingV2 initialized [2018-06-25 01:20:44,656 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:20:44" (1/1) ... [2018-06-25 01:20:44,669 INFO ]: Initial Icfg 10 locations, 10 edges [2018-06-25 01:20:44,670 INFO ]: Using Remove infeasible edges [2018-06-25 01:20:44,670 INFO ]: Using Maximize final states [2018-06-25 01:20:44,671 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-25 01:20:44,671 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-25 01:20:44,672 INFO ]: Using Remove sink states [2018-06-25 01:20:44,673 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-25 01:20:44,673 INFO ]: Using Use SBE [2018-06-25 01:20:44,677 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 01:20:44,712 WARN ]: aborting because of expected exponential blowup for input size 36 [2018-06-25 01:20:44,720 WARN ]: aborting because of expected exponential blowup for input size 36 [2018-06-25 01:20:44,721 INFO ]: SBE split 1 edges [2018-06-25 01:20:44,725 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-25 01:20:44,727 INFO ]: 0 new accepting states [2018-06-25 01:20:44,793 INFO ]: Removed 5 edges and 2 locations by large block encoding [2018-06-25 01:20:44,794 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 01:20:44,796 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-25 01:20:44,796 INFO ]: 0 new accepting states [2018-06-25 01:20:44,796 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-25 01:20:44,796 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-25 01:20:44,796 INFO ]: Encoded RCFG 6 locations, 7 edges [2018-06-25 01:20:44,797 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 01:20:44 BasicIcfg [2018-06-25 01:20:44,797 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-25 01:20:44,797 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 01:20:44,797 INFO ]: Initializing TraceAbstraction... [2018-06-25 01:20:44,800 INFO ]: TraceAbstraction initialized [2018-06-25 01:20:44,800 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 01:20:44" (1/4) ... [2018-06-25 01:20:44,801 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c45e062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 01:20:44, skipping insertion in model container [2018-06-25 01:20:44,801 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 01:20:44" (2/4) ... [2018-06-25 01:20:44,802 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c45e062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 01:20:44, skipping insertion in model container [2018-06-25 01:20:44,802 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 01:20:44" (3/4) ... [2018-06-25 01:20:44,802 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c45e062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 01:20:44, skipping insertion in model container [2018-06-25 01:20:44,802 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 25.06 01:20:44" (4/4) ... [2018-06-25 01:20:44,803 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-25 01:20:44,814 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 01:20:44,822 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 01:20:44,881 INFO ]: Using default assertion order modulation [2018-06-25 01:20:44,881 INFO ]: Interprodecural is true [2018-06-25 01:20:44,881 INFO ]: Hoare is false [2018-06-25 01:20:44,881 INFO ]: Compute interpolants for FPandBP [2018-06-25 01:20:44,881 INFO ]: Backedges is TWOTRACK [2018-06-25 01:20:44,881 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 01:20:44,881 INFO ]: Difference is false [2018-06-25 01:20:44,881 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 01:20:44,881 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 01:20:44,894 INFO ]: Start isEmpty. Operand 6 states. [2018-06-25 01:20:44,905 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-25 01:20:44,905 INFO ]: Found error trace [2018-06-25 01:20:44,905 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-25 01:20:44,906 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:20:44,910 INFO ]: Analyzing trace with hash 35465027, now seen corresponding path program 1 times [2018-06-25 01:20:44,912 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:20:44,913 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:20:44,950 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:44,950 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:20:44,950 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:44,990 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:45,063 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:45,065 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 01:20:45,065 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 01:20:45,066 INFO ]: Interpolant automaton has 3 states [2018-06-25 01:20:45,076 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 01:20:45,076 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 01:20:45,078 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-25 01:20:45,144 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:20:45,144 INFO ]: Finished difference Result 7 states and 8 transitions. [2018-06-25 01:20:45,145 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 01:20:45,146 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-25 01:20:45,146 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:20:45,157 INFO ]: With dead ends: 7 [2018-06-25 01:20:45,157 INFO ]: Without dead ends: 7 [2018-06-25 01:20:45,159 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 01:20:45,180 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-25 01:20:45,208 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-25 01:20:45,209 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-25 01:20:45,210 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-06-25 01:20:45,211 INFO ]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2018-06-25 01:20:45,211 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:20:45,211 INFO ]: Abstraction has 7 states and 8 transitions. [2018-06-25 01:20:45,211 INFO ]: Interpolant automaton has 3 states. [2018-06-25 01:20:45,211 INFO ]: Start isEmpty. Operand 7 states and 8 transitions. [2018-06-25 01:20:45,211 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-25 01:20:45,211 INFO ]: Found error trace [2018-06-25 01:20:45,211 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-25 01:20:45,212 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:20:45,212 INFO ]: Analyzing trace with hash 35494818, now seen corresponding path program 1 times [2018-06-25 01:20:45,212 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:20:45,212 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:20:45,213 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:45,213 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:20:45,213 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:45,224 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:45,254 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:45,254 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 01:20:45,255 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 01:20:45,257 INFO ]: Interpolant automaton has 3 states [2018-06-25 01:20:45,257 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 01:20:45,257 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 01:20:45,257 INFO ]: Start difference. First operand 7 states and 8 transitions. Second operand 3 states. [2018-06-25 01:20:45,329 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:20:45,329 INFO ]: Finished difference Result 8 states and 9 transitions. [2018-06-25 01:20:45,329 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 01:20:45,329 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-25 01:20:45,329 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:20:45,329 INFO ]: With dead ends: 8 [2018-06-25 01:20:45,329 INFO ]: Without dead ends: 8 [2018-06-25 01:20:45,330 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 01:20:45,330 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-25 01:20:45,331 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-06-25 01:20:45,331 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-25 01:20:45,331 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-06-25 01:20:45,331 INFO ]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2018-06-25 01:20:45,331 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:20:45,332 INFO ]: Abstraction has 7 states and 8 transitions. [2018-06-25 01:20:45,332 INFO ]: Interpolant automaton has 3 states. [2018-06-25 01:20:45,332 INFO ]: Start isEmpty. Operand 7 states and 8 transitions. [2018-06-25 01:20:45,332 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 01:20:45,332 INFO ]: Found error trace [2018-06-25 01:20:45,332 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 01:20:45,332 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:20:45,332 INFO ]: Analyzing trace with hash 1099033518, now seen corresponding path program 1 times [2018-06-25 01:20:45,332 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:20:45,332 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:20:45,333 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:45,333 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:20:45,333 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:45,386 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:45,534 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:45,535 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:20:45,535 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 01:20:45,547 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:20:45,628 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:45,635 INFO ]: Computing forward predicates... [2018-06-25 01:20:47,455 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:47,475 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:20:47,475 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 01:20:47,476 INFO ]: Interpolant automaton has 5 states [2018-06-25 01:20:47,476 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 01:20:47,476 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 01:20:47,476 INFO ]: Start difference. First operand 7 states and 8 transitions. Second operand 5 states. [2018-06-25 01:20:47,577 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:20:47,577 INFO ]: Finished difference Result 9 states and 10 transitions. [2018-06-25 01:20:47,578 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 01:20:47,578 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-25 01:20:47,578 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:20:47,578 INFO ]: With dead ends: 9 [2018-06-25 01:20:47,578 INFO ]: Without dead ends: 9 [2018-06-25 01:20:47,579 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-25 01:20:47,579 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 01:20:47,580 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-06-25 01:20:47,580 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 01:20:47,580 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-06-25 01:20:47,580 INFO ]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2018-06-25 01:20:47,580 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:20:47,580 INFO ]: Abstraction has 8 states and 9 transitions. [2018-06-25 01:20:47,580 INFO ]: Interpolant automaton has 5 states. [2018-06-25 01:20:47,580 INFO ]: Start isEmpty. Operand 8 states and 9 transitions. [2018-06-25 01:20:47,580 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 01:20:47,580 INFO ]: Found error trace [2018-06-25 01:20:47,580 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 01:20:47,581 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:20:47,581 INFO ]: Analyzing trace with hash 1099957039, now seen corresponding path program 1 times [2018-06-25 01:20:47,581 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:20:47,581 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:20:47,582 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:47,582 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:20:47,582 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:47,611 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:47,689 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:47,689 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:20:47,689 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 01:20:47,697 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:20:47,735 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:47,737 INFO ]: Computing forward predicates... [2018-06-25 01:20:48,383 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:48,403 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:20:48,403 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-25 01:20:48,403 INFO ]: Interpolant automaton has 4 states [2018-06-25 01:20:48,404 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 01:20:48,404 INFO ]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-25 01:20:48,404 INFO ]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2018-06-25 01:20:48,457 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:20:48,457 INFO ]: Finished difference Result 10 states and 11 transitions. [2018-06-25 01:20:48,458 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 01:20:48,458 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-25 01:20:48,458 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:20:48,458 INFO ]: With dead ends: 10 [2018-06-25 01:20:48,458 INFO ]: Without dead ends: 10 [2018-06-25 01:20:48,458 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-25 01:20:48,459 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 01:20:48,459 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 8. [2018-06-25 01:20:48,459 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 01:20:48,460 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-06-25 01:20:48,460 INFO ]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2018-06-25 01:20:48,460 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:20:48,460 INFO ]: Abstraction has 8 states and 9 transitions. [2018-06-25 01:20:48,460 INFO ]: Interpolant automaton has 4 states. [2018-06-25 01:20:48,460 INFO ]: Start isEmpty. Operand 8 states and 9 transitions. [2018-06-25 01:20:48,460 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 01:20:48,460 INFO ]: Found error trace [2018-06-25 01:20:48,460 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-25 01:20:48,460 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:20:48,461 INFO ]: Analyzing trace with hash -290081629, now seen corresponding path program 2 times [2018-06-25 01:20:48,461 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:20:48,461 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:20:48,461 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:48,461 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 01:20:48,461 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:48,506 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:48,754 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:48,754 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:20:48,754 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 01:20:48,762 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 01:20:48,821 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 01:20:48,821 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:48,823 INFO ]: Computing forward predicates... [2018-06-25 01:20:52,684 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:52,704 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:20:52,704 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-25 01:20:52,704 INFO ]: Interpolant automaton has 6 states [2018-06-25 01:20:52,704 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 01:20:52,704 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-25 01:20:52,705 INFO ]: Start difference. First operand 8 states and 9 transitions. Second operand 6 states. [2018-06-25 01:20:52,796 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:20:52,796 INFO ]: Finished difference Result 12 states and 13 transitions. [2018-06-25 01:20:52,797 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 01:20:52,797 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-25 01:20:52,797 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:20:52,797 INFO ]: With dead ends: 12 [2018-06-25 01:20:52,797 INFO ]: Without dead ends: 12 [2018-06-25 01:20:52,797 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-06-25 01:20:52,797 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 01:20:52,798 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-06-25 01:20:52,798 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 01:20:52,799 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2018-06-25 01:20:52,799 INFO ]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2018-06-25 01:20:52,799 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:20:52,799 INFO ]: Abstraction has 10 states and 11 transitions. [2018-06-25 01:20:52,799 INFO ]: Interpolant automaton has 6 states. [2018-06-25 01:20:52,799 INFO ]: Start isEmpty. Operand 10 states and 11 transitions. [2018-06-25 01:20:52,799 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 01:20:52,799 INFO ]: Found error trace [2018-06-25 01:20:52,799 INFO ]: trace histogram [3, 1, 1, 1, 1, 1] [2018-06-25 01:20:52,799 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:20:52,799 INFO ]: Analyzing trace with hash 484525455, now seen corresponding path program 2 times [2018-06-25 01:20:52,799 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:20:52,799 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:20:52,800 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:52,800 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:20:52,800 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:52,837 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:53,117 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:53,118 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:20:53,118 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 01:20:53,125 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 01:20:53,191 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 01:20:53,191 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:53,194 INFO ]: Computing forward predicates... [2018-06-25 01:20:57,844 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:57,865 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 01:20:57,865 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-25 01:20:57,866 INFO ]: Interpolant automaton has 7 states [2018-06-25 01:20:57,866 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 01:20:57,866 INFO ]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-25 01:20:57,866 INFO ]: Start difference. First operand 10 states and 11 transitions. Second operand 7 states. [2018-06-25 01:20:58,019 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 01:20:58,019 INFO ]: Finished difference Result 14 states and 15 transitions. [2018-06-25 01:20:58,019 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 01:20:58,019 INFO ]: Start accepts. Automaton has 7 states. Word has length 8 [2018-06-25 01:20:58,019 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 01:20:58,020 INFO ]: With dead ends: 14 [2018-06-25 01:20:58,020 INFO ]: Without dead ends: 14 [2018-06-25 01:20:58,020 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-06-25 01:20:58,020 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-25 01:20:58,021 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 10. [2018-06-25 01:20:58,021 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 01:20:58,022 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2018-06-25 01:20:58,022 INFO ]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2018-06-25 01:20:58,022 INFO ]: Finished accepts. word is rejected. [2018-06-25 01:20:58,022 INFO ]: Abstraction has 10 states and 11 transitions. [2018-06-25 01:20:58,022 INFO ]: Interpolant automaton has 7 states. [2018-06-25 01:20:58,022 INFO ]: Start isEmpty. Operand 10 states and 11 transitions. [2018-06-25 01:20:58,022 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 01:20:58,022 INFO ]: Found error trace [2018-06-25 01:20:58,022 INFO ]: trace histogram [4, 1, 1, 1, 1, 1] [2018-06-25 01:20:58,022 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 01:20:58,022 INFO ]: Analyzing trace with hash 392194563, now seen corresponding path program 3 times [2018-06-25 01:20:58,022 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 01:20:58,022 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 01:20:58,023 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:58,023 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 01:20:58,023 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 01:20:58,075 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:58,255 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 01:20:58,255 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 01:20:58,255 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 01:20:58,267 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 01:20:58,316 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 01:20:58,316 INFO ]: Conjunction of SSA is unsat [2018-06-25 01:20:58,319 INFO ]: Computing forward predicates... [2018-06-25 01:21:51,113 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 01:21:51,138 WARN ]: expecting exponential blowup for input size 7 Received shutdown request... [2018-06-25 01:21:53,860 INFO ]: Timeout while computing interpolants [2018-06-25 01:21:54,060 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 01:21:54,061 WARN ]: Verification canceled [2018-06-25 01:21:54,064 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-25 01:21:54,067 WARN ]: Timeout [2018-06-25 01:21:54,067 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 01:21:54 BasicIcfg [2018-06-25 01:21:54,067 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 01:21:54,070 INFO ]: Toolchain (without parser) took 69801.03 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 255.2 MB in the beginning and 995.0 MB in the end (delta: -739.7 MB). Peak memory consumption was 461.9 MB. Max. memory is 3.6 GB. [2018-06-25 01:21:54,073 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 01:21:54,073 INFO ]: ChcToBoogie took 56.89 ms. Allocated memory is still 306.7 MB. Free memory was 255.2 MB in the beginning and 253.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:21:54,074 INFO ]: Boogie Preprocessor took 41.65 ms. Allocated memory is still 306.7 MB. Free memory was 253.3 MB in the beginning and 251.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:21:54,075 INFO ]: RCFGBuilder took 281.18 ms. Allocated memory is still 306.7 MB. Free memory was 251.3 MB in the beginning and 239.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:21:54,079 INFO ]: BlockEncodingV2 took 142.44 ms. Allocated memory is still 306.7 MB. Free memory was 239.3 MB in the beginning and 233.3 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:21:54,080 INFO ]: TraceAbstraction took 69269.57 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 233.3 MB in the beginning and 995.0 MB in the end (delta: -761.7 MB). Peak memory consumption was 440.0 MB. Max. memory is 3.6 GB. [2018-06-25 01:21:54,087 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, 7 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 56.89 ms. Allocated memory is still 306.7 MB. Free memory was 255.2 MB in the beginning and 253.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.65 ms. Allocated memory is still 306.7 MB. Free memory was 253.3 MB in the beginning and 251.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 281.18 ms. Allocated memory is still 306.7 MB. Free memory was 251.3 MB in the beginning and 239.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 142.44 ms. Allocated memory is still 306.7 MB. Free memory was 239.3 MB in the beginning and 233.3 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 69269.57 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 233.3 MB in the beginning and 995.0 MB in the end (delta: -761.7 MB). Peak memory consumption was 440.0 MB. 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 10 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. TIMEOUT Result, 69.1s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 45 SDs, 0 SdLazy, 46 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1227 SizeOfPredicates, 20 NumberOfNonLiveVariables, 642 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 0/22 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/NetBSD_loop_int.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-25_01-21-54-124.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/NetBSD_loop_int.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-25_01-21-54-124.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/NetBSD_loop_int.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-25_01-21-54-124.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/NetBSD_loop_int.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_01-21-54-124.csv Completed graceful shutdown