java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.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/cav12/array_max-5.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:15:19,283 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:15:19,285 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:15:19,298 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:15:19,299 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:15:19,300 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:15:19,301 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:15:19,305 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:15:19,307 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:15:19,307 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:15:19,310 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:15:19,310 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:15:19,311 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:15:19,312 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:15:19,312 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:15:19,316 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:15:19,318 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:15:19,331 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:15:19,333 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:15:19,333 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:15:19,335 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:15:19,337 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:15:19,337 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:15:19,337 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:15:19,338 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:15:19,339 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:15:19,344 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:15:19,345 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:15:19,346 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:15:19,346 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:15:19,346 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:15:19,347 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:15:19,347 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:15:19,353 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:15:19,354 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:15:19,354 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:15:19,373 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:15:19,373 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:15:19,374 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:15:19,374 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:15:19,375 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:15:19,375 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:15:19,375 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:15:19,375 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:15:19,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:15:19,377 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:15:19,377 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:15:19,377 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:15:19,378 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:15:19,378 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:15:19,378 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:15:19,378 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:15:19,378 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:15:19,380 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:15:19,380 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:15:19,433 INFO ]: Repository-Root is: /tmp [2018-06-22 04:15:19,446 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:15:19,449 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:15:19,451 INFO ]: Initializing SmtParser... [2018-06-22 04:15:19,451 INFO ]: SmtParser initialized [2018-06-22 04:15:19,452 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/array_max-5.smt2 [2018-06-22 04:15:19,453 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 [2018-06-22 04:15:19,543 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/array_max-5.smt2 unknown [2018-06-22 04:15:20,155 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/array_max-5.smt2 [2018-06-22 04:15:20,160 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:15:20,173 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:15:20,173 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:15:20,173 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:15:20,173 INFO ]: ChcToBoogie initialized [2018-06-22 04:15:20,176 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:15:20" (1/1) ... [2018-06-22 04:15:20,240 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:15:20 Unit [2018-06-22 04:15:20,240 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:15:20,240 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:15:20,240 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:15:20,240 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:15:20,274 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:15:20" (1/1) ... [2018-06-22 04:15:20,275 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:15:20" (1/1) ... [2018-06-22 04:15:20,290 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:15:20" (1/1) ... [2018-06-22 04:15:20,290 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:15:20" (1/1) ... [2018-06-22 04:15:20,329 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:15:20" (1/1) ... [2018-06-22 04:15:20,330 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:15:20" (1/1) ... [2018-06-22 04:15:20,335 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:15:20" (1/1) ... [2018-06-22 04:15:20,341 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:15:20,341 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:15:20,341 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:15:20,342 INFO ]: RCFGBuilder initialized [2018-06-22 04:15:20,342 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:15:20" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 04:15:20,353 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:15:20,353 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:15:20,353 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:15:20,353 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:15:20,353 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:15:20,353 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:15:20,822 INFO ]: Using library mode [2018-06-22 04:15:20,822 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:15:20 BoogieIcfgContainer [2018-06-22 04:15:20,822 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:15:20,826 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:15:20,826 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:15:20,832 INFO ]: TraceAbstraction initialized [2018-06-22 04:15:20,832 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:15:20" (1/3) ... [2018-06-22 04:15:20,833 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd71b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:15:20, skipping insertion in model container [2018-06-22 04:15:20,833 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:15:20" (2/3) ... [2018-06-22 04:15:20,833 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd71b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:15:20, skipping insertion in model container [2018-06-22 04:15:20,833 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:15:20" (3/3) ... [2018-06-22 04:15:20,835 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:15:20,845 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:15:20,853 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:15:20,924 INFO ]: Using default assertion order modulation [2018-06-22 04:15:20,924 INFO ]: Interprodecural is true [2018-06-22 04:15:20,924 INFO ]: Hoare is false [2018-06-22 04:15:20,924 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:15:20,924 INFO ]: Backedges is TWOTRACK [2018-06-22 04:15:20,924 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:15:20,924 INFO ]: Difference is false [2018-06-22 04:15:20,925 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:15:20,925 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:15:20,938 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:15:20,950 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:15:20,950 INFO ]: Found error trace [2018-06-22 04:15:20,951 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:15:20,951 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:15:20,954 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 04:15:20,956 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:15:20,956 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:15:20,988 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:15:20,988 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:15:20,988 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:15:21,048 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:15:21,154 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:15:21,156 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:15:21,156 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:15:21,158 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:15:21,173 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:15:21,174 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:15:21,176 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:15:21,252 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:15:21,252 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:15:21,253 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:15:21,253 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:15:21,254 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:15:21,260 INFO ]: With dead ends: 9 [2018-06-22 04:15:21,260 INFO ]: Without dead ends: 9 [2018-06-22 04:15:21,261 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 [2018-06-22 04:15:21,273 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:15:21,295 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:15:21,296 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:15:21,296 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:15:21,297 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:15:21,297 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:15:21,297 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:15:21,297 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:15:21,297 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:15:21,298 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:15:21,298 INFO ]: Found error trace [2018-06-22 04:15:21,298 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:15:21,298 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:15:21,298 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 04:15:21,298 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:15:21,298 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:15:21,299 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:15:21,299 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:15:21,299 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:15:21,498 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:15:21,878 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:15:21,878 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:15:21,878 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 [2018-06-22 04:15:21,896 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:15:22,007 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:15:22,023 INFO ]: Computing forward predicates... [2018-06-22 04:15:22,755 WARN ]: Spent 194.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-06-22 04:15:22,761 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:15:22,783 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:15:22,783 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 04:15:22,783 INFO ]: Interpolant automaton has 6 states [2018-06-22 04:15:22,783 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 04:15:22,783 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 04:15:22,784 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 04:15:23,296 WARN ]: Spent 479.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2018-06-22 04:15:23,441 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:15:23,441 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:15:23,442 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:15:23,443 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 04:15:23,443 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:15:23,443 INFO ]: With dead ends: 11 [2018-06-22 04:15:23,443 INFO ]: Without dead ends: 11 [2018-06-22 04:15:23,444 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:15:23,444 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:15:23,445 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:15:23,445 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:15:23,445 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:15:23,446 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:15:23,446 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:15:23,446 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:15:23,446 INFO ]: Interpolant automaton has 6 states. [2018-06-22 04:15:23,446 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:15:23,446 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:15:23,446 INFO ]: Found error trace [2018-06-22 04:15:23,446 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:15:23,446 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:15:23,446 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 04:15:23,446 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:15:23,446 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:15:23,450 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:15:23,450 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:15:23,450 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:15:23,841 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:15:24,912 WARN ]: Spent 517.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-06-22 04:15:25,146 WARN ]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 04:15:25,311 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:15:25,311 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:15:25,311 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 [2018-06-22 04:15:25,329 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:15:25,498 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:15:25,498 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:15:25,512 INFO ]: Computing forward predicates... [2018-06-22 04:15:26,464 WARN ]: Spent 393.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-06-22 04:15:28,830 WARN ]: Spent 1.14 s on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-06-22 04:15:31,012 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:15:31,033 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:15:31,033 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 04:15:31,034 INFO ]: Interpolant automaton has 10 states [2018-06-22 04:15:31,034 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 04:15:31,034 INFO ]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:15:31,034 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 04:15:31,268 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:15:31,268 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:15:31,338 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:15:31,338 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 04:15:31,339 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:15:31,339 INFO ]: With dead ends: 13 [2018-06-22 04:15:31,339 INFO ]: Without dead ends: 13 [2018-06-22 04:15:31,339 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-06-22 04:15:31,339 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:15:31,340 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:15:31,341 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:15:31,341 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:15:31,341 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 04:15:31,341 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:15:31,341 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:15:31,341 INFO ]: Interpolant automaton has 10 states. [2018-06-22 04:15:31,341 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:15:31,341 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:15:31,341 INFO ]: Found error trace [2018-06-22 04:15:31,342 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:15:31,342 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:15:31,342 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-22 04:15:31,342 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:15:31,342 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:15:31,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:15:31,343 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:15:31,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:15:31,689 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:15:32,364 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 6 [2018-06-22 04:15:32,520 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:15:32,521 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:15:32,521 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 [2018-06-22 04:15:32,526 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:15:32,691 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 04:15:32,691 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:15:32,707 INFO ]: Computing forward predicates... [2018-06-22 04:15:35,872 WARN ]: Spent 251.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2018-06-22 04:15:46,649 WARN ]: Spent 238.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 52 [2018-06-22 04:15:46,835 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:15:46,858 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:15:46,858 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 04:15:46,858 INFO ]: Interpolant automaton has 14 states [2018-06-22 04:15:46,858 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 04:15:46,859 INFO ]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-06-22 04:15:46,859 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 04:15:47,120 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:15:47,120 INFO ]: Finished difference Result 17 states and 17 transitions. [2018-06-22 04:15:47,123 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 04:15:47,123 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 04:15:47,123 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:15:47,124 INFO ]: With dead ends: 17 [2018-06-22 04:15:47,124 INFO ]: Without dead ends: 17 [2018-06-22 04:15:47,124 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=115, Invalid=191, Unknown=0, NotChecked=0, Total=306 [2018-06-22 04:15:47,124 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 04:15:47,126 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 04:15:47,126 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 04:15:47,126 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-06-22 04:15:47,126 INFO ]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2018-06-22 04:15:47,126 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:15:47,126 INFO ]: Abstraction has 17 states and 17 transitions. [2018-06-22 04:15:47,126 INFO ]: Interpolant automaton has 14 states. [2018-06-22 04:15:47,126 INFO ]: Start isEmpty. Operand 17 states and 17 transitions. [2018-06-22 04:15:47,127 INFO ]: Finished isEmpty. Found accepting run of length 17 [2018-06-22 04:15:47,127 INFO ]: Found error trace [2018-06-22 04:15:47,127 INFO ]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:15:47,127 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:15:47,127 INFO ]: Analyzing trace with hash 1237160535, now seen corresponding path program 4 times [2018-06-22 04:15:47,127 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:15:47,127 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:15:47,128 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:15:47,128 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:15:47,128 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:15:47,952 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:15:49,031 WARN ]: Spent 282.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 8 [2018-06-22 04:15:49,560 WARN ]: Spent 135.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 13 [2018-06-22 04:15:49,599 INFO ]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:15:49,600 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:15:49,600 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) [2018-06-22 04:15:49,614 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:15:49,973 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:15:49,973 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:15:49,996 INFO ]: Computing forward predicates... [2018-06-22 04:15:50,548 WARN ]: Spent 272.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2018-06-22 04:16:05,684 WARN ]: Simplifying disjunction of 6752 conjuctions. This might take some time... [2018-06-22 04:16:08,494 INFO ]: Simplified to disjunction of 6752 conjuctions. [2018-06-22 04:16:08,620 WARN ]: Simplifying disjunction of 6753 conjuctions. This might take some time... [2018-06-22 04:16:12,159 INFO ]: Simplified to disjunction of 6753 conjuctions. [2018-06-22 04:16:12,285 WARN ]: Simplifying disjunction of 6754 conjuctions. This might take some time... [2018-06-22 04:16:14,877 INFO ]: Simplified to disjunction of 6754 conjuctions. [2018-06-22 04:16:15,090 WARN ]: Simplifying disjunction of 6755 conjuctions. This might take some time... [2018-06-22 04:16:18,571 INFO ]: Simplified to disjunction of 6755 conjuctions. Received shutdown request... [2018-06-22 04:16:24,428 INFO ]: Timeout while computing interpolants [2018-06-22 04:16:24,629 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:16:24,629 WARN ]: Verification canceled [2018-06-22 04:16:24,633 WARN ]: Timeout [2018-06-22 04:16:24,634 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:16:24 BoogieIcfgContainer [2018-06-22 04:16:24,634 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:16:24,635 INFO ]: Toolchain (without parser) took 64473.91 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 232.2 MB in the beginning and 1.0 GB in the end (delta: -808.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:16:24,637 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:16:24,637 INFO ]: ChcToBoogie took 66.86 ms. Allocated memory is still 306.7 MB. Free memory was 232.2 MB in the beginning and 229.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:16:24,638 INFO ]: Boogie Preprocessor took 100.55 ms. Allocated memory is still 306.7 MB. Free memory was 229.2 MB in the beginning and 227.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 04:16:24,638 INFO ]: RCFGBuilder took 480.84 ms. Allocated memory is still 306.7 MB. Free memory was 227.1 MB in the beginning and 190.1 MB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 3.6 GB. [2018-06-22 04:16:24,639 INFO ]: TraceAbstraction took 63807.58 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 190.1 MB in the beginning and 1.0 GB in the end (delta: -850.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 04:16:24,642 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 66.86 ms. Allocated memory is still 306.7 MB. Free memory was 232.2 MB in the beginning and 229.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 100.55 ms. Allocated memory is still 306.7 MB. Free memory was 229.2 MB in the beginning and 227.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 480.84 ms. Allocated memory is still 306.7 MB. Free memory was 227.1 MB in the beginning and 190.1 MB in the end (delta: 37.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 63807.58 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 190.1 MB in the beginning and 1.0 GB in the end (delta: -850.2 MB). Peak memory consumption was 1.2 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 (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 9, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 501 quantified variables from 83 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 63.7s OverallTime, 5 OverallIterations, 9 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 2 SDslu, 95 SDs, 0 SdLazy, 40 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=4, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 23.1s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 5200 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1176 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/44 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/array_max-5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-16-24-661.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_max-5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-16-24-661.csv Completed graceful shutdown