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-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:13:19,372 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:13:19,374 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:13:19,388 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:13:19,389 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:13:19,390 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:13:19,391 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:13:19,395 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:13:19,396 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:13:19,398 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:13:19,398 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:13:19,399 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:13:19,399 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:13:19,400 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:13:19,404 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:13:19,404 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:13:19,406 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:13:19,416 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:13:19,417 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:13:19,418 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:13:19,419 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:13:19,423 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:13:19,424 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:13:19,424 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:13:19,425 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:13:19,425 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:13:19,428 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:13:19,429 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:13:19,430 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:13:19,430 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:13:19,431 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:13:19,431 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:13:19,432 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:13:19,436 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:13:19,437 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:13:19,437 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:13:19,453 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:13:19,453 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:13:19,453 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:13:19,454 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:13:19,455 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:13:19,455 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:13:19,455 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:13:19,455 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:13:19,455 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:13:19,456 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:13:19,456 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:13:19,456 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:13:19,456 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:13:19,457 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:13:19,458 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:13:19,458 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:13:19,458 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:13:19,460 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:13:19,460 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:13:19,509 INFO ]: Repository-Root is: /tmp [2018-06-22 04:13:19,527 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:13:19,534 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:13:19,535 INFO ]: Initializing SmtParser... [2018-06-22 04:13:19,536 INFO ]: SmtParser initialized [2018-06-22 04:13:19,536 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/array_max-1.smt2 [2018-06-22 04:13:19,538 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 04:13:19,632 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/array_max-1.smt2 unknown [2018-06-22 04:13:20,041 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/array_max-1.smt2 [2018-06-22 04:13:20,045 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:13:20,051 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:13:20,051 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:13:20,051 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:13:20,051 INFO ]: ChcToBoogie initialized [2018-06-22 04:13:20,055 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:13:20" (1/1) ... [2018-06-22 04:13:20,113 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:13:20 Unit [2018-06-22 04:13:20,113 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:13:20,115 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:13:20,115 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:13:20,115 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:13:20,136 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:13:20" (1/1) ... [2018-06-22 04:13:20,136 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:13:20" (1/1) ... [2018-06-22 04:13:20,156 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:13:20" (1/1) ... [2018-06-22 04:13:20,156 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:13:20" (1/1) ... [2018-06-22 04:13:20,163 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:13:20" (1/1) ... [2018-06-22 04:13:20,174 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:13:20" (1/1) ... [2018-06-22 04:13:20,182 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:13:20" (1/1) ... [2018-06-22 04:13:20,185 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:13:20,186 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:13:20,186 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:13:20,186 INFO ]: RCFGBuilder initialized [2018-06-22 04:13:20,196 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:13:20" (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 04:13:20,212 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:13:20,212 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:13:20,212 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:13:20,212 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:13:20,212 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:13:20,212 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 04:13:20,611 INFO ]: Using library mode [2018-06-22 04:13:20,612 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:13:20 BoogieIcfgContainer [2018-06-22 04:13:20,612 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:13:20,613 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:13:20,613 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:13:20,616 INFO ]: TraceAbstraction initialized [2018-06-22 04:13:20,616 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:13:20" (1/3) ... [2018-06-22 04:13:20,617 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ecb3480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:13:20, skipping insertion in model container [2018-06-22 04:13:20,617 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:13:20" (2/3) ... [2018-06-22 04:13:20,618 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ecb3480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:13:20, skipping insertion in model container [2018-06-22 04:13:20,618 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:13:20" (3/3) ... [2018-06-22 04:13:20,619 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:13:20,628 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:13:20,638 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:13:20,679 INFO ]: Using default assertion order modulation [2018-06-22 04:13:20,680 INFO ]: Interprodecural is true [2018-06-22 04:13:20,680 INFO ]: Hoare is false [2018-06-22 04:13:20,680 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:13:20,680 INFO ]: Backedges is TWOTRACK [2018-06-22 04:13:20,680 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:13:20,680 INFO ]: Difference is false [2018-06-22 04:13:20,680 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:13:20,680 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:13:20,696 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:13:20,710 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:13:20,710 INFO ]: Found error trace [2018-06-22 04:13:20,711 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:13:20,711 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:13:20,716 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 04:13:20,717 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:13:20,718 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:13:20,750 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:13:20,750 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:13:20,750 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:13:20,825 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:13:20,918 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:13:20,921 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:13:20,921 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:13:20,922 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:13:20,933 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:13:20,933 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:13:20,935 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:13:21,022 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:13:21,023 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:13:21,023 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:13:21,024 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:13:21,025 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:13:21,033 INFO ]: With dead ends: 9 [2018-06-22 04:13:21,033 INFO ]: Without dead ends: 9 [2018-06-22 04:13:21,036 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 04:13:21,055 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:13:21,074 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:13:21,075 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:13:21,076 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:13:21,077 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:13:21,077 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:13:21,077 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:13:21,077 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:13:21,077 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:13:21,078 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:13:21,078 INFO ]: Found error trace [2018-06-22 04:13:21,078 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:13:21,078 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:13:21,078 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 04:13:21,078 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:13:21,078 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:13:21,080 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:13:21,080 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:13:21,080 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:13:21,186 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:13:21,335 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:13:21,335 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:13:21,335 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 04:13:21,344 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:13:21,469 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:13:21,483 INFO ]: Computing forward predicates... [2018-06-22 04:13:21,937 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-06-22 04:13:21,940 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:13:21,961 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:13:21,961 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 04:13:21,961 INFO ]: Interpolant automaton has 5 states [2018-06-22 04:13:21,962 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 04:13:21,962 INFO ]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-22 04:13:21,962 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 04:13:22,076 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:13:22,076 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:13:22,077 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:13:22,077 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 04:13:22,077 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:13:22,078 INFO ]: With dead ends: 11 [2018-06-22 04:13:22,078 INFO ]: Without dead ends: 11 [2018-06-22 04:13:22,078 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-22 04:13:22,078 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:13:22,079 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:13:22,080 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:13:22,080 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:13:22,080 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:13:22,080 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:13:22,080 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:13:22,080 INFO ]: Interpolant automaton has 5 states. [2018-06-22 04:13:22,080 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:13:22,080 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:13:22,080 INFO ]: Found error trace [2018-06-22 04:13:22,081 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:13:22,082 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:13:22,082 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 04:13:22,082 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:13:22,082 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:13:22,083 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:13:22,083 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:13:22,083 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:13:22,263 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:13:22,769 WARN ]: Spent 199.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-06-22 04:13:22,883 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:13:22,883 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:13:22,883 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 04:13:22,889 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:13:22,994 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:13:22,994 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:13:23,002 INFO ]: Computing forward predicates... [2018-06-22 04:13:23,585 WARN ]: Spent 284.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-06-22 04:13:23,964 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2018-06-22 04:13:24,552 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:13:24,573 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:13:24,574 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 04:13:24,574 INFO ]: Interpolant automaton has 9 states [2018-06-22 04:13:24,574 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 04:13:24,574 INFO ]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-06-22 04:13:24,574 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-22 04:13:24,669 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:13:24,669 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:13:24,670 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:13:24,670 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-22 04:13:24,670 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:13:24,670 INFO ]: With dead ends: 13 [2018-06-22 04:13:24,670 INFO ]: Without dead ends: 13 [2018-06-22 04:13:24,671 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-06-22 04:13:24,671 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:13:24,672 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:13:24,672 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:13:24,672 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:13:24,672 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 04:13:24,672 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:13:24,672 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:13:24,672 INFO ]: Interpolant automaton has 9 states. [2018-06-22 04:13:24,672 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:13:24,673 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:13:24,673 INFO ]: Found error trace [2018-06-22 04:13:24,673 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:13:24,673 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:13:24,673 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 04:13:24,673 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:13:24,673 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:13:24,674 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:13:24,674 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:13:24,674 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:13:24,854 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:13:25,435 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:13:25,435 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:13:25,435 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 04:13:25,440 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:13:25,583 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 04:13:25,583 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:13:25,593 INFO ]: Computing forward predicates... [2018-06-22 04:13:28,769 WARN ]: Spent 389.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 23 [2018-06-22 04:13:31,462 WARN ]: Spent 663.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-06-22 04:13:31,478 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:13:31,510 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:13:31,510 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 04:13:31,510 INFO ]: Interpolant automaton has 13 states [2018-06-22 04:13:31,510 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 04:13:31,511 INFO ]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:13:31,511 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2018-06-22 04:13:31,749 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:13:31,749 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 04:13:31,749 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 04:13:31,749 INFO ]: Start accepts. Automaton has 13 states. Word has length 12 [2018-06-22 04:13:31,750 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:13:31,750 INFO ]: With dead ends: 16 [2018-06-22 04:13:31,750 INFO ]: Without dead ends: 16 [2018-06-22 04:13:31,750 INFO ]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=111, Invalid=161, Unknown=0, NotChecked=0, Total=272 [2018-06-22 04:13:31,751 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 04:13:31,752 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-22 04:13:31,752 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 04:13:31,753 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-22 04:13:31,753 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-06-22 04:13:31,753 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:13:31,753 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-22 04:13:31,753 INFO ]: Interpolant automaton has 13 states. [2018-06-22 04:13:31,753 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-22 04:13:31,753 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 04:13:31,753 INFO ]: Found error trace [2018-06-22 04:13:31,753 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:13:31,754 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:13:31,754 INFO ]: Analyzing trace with hash 1051911180, now seen corresponding path program 4 times [2018-06-22 04:13:31,754 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:13:31,754 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:13:31,754 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:13:31,754 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:13:31,754 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:13:32,104 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:13:32,812 WARN ]: Spent 230.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 5 [2018-06-22 04:13:33,091 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 11 [2018-06-22 04:13:33,403 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 13 [2018-06-22 04:13:33,497 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:13:33,497 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:13:33,497 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 [2018-06-22 04:13:33,512 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 04:13:33,688 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:13:33,688 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:13:33,701 INFO ]: Computing forward predicates... [2018-06-22 04:13:36,033 WARN ]: Spent 1.16 s on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2018-06-22 04:13:36,579 WARN ]: Spent 302.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 30 [2018-06-22 04:13:36,936 WARN ]: Spent 175.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 30 [2018-06-22 04:13:37,656 WARN ]: Spent 307.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 29 [2018-06-22 04:13:39,005 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:13:39,030 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:13:39,030 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-06-22 04:13:39,031 INFO ]: Interpolant automaton has 19 states [2018-06-22 04:13:39,031 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 04:13:39,031 INFO ]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-06-22 04:13:39,031 INFO ]: Start difference. First operand 16 states and 16 transitions. Second operand 19 states. [2018-06-22 04:13:39,329 WARN ]: Spent 216.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 33 [2018-06-22 04:13:39,498 WARN ]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2018-06-22 04:13:39,693 WARN ]: Spent 180.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2018-06-22 04:13:39,871 WARN ]: Spent 162.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2018-06-22 04:13:40,043 WARN ]: Spent 149.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2018-06-22 04:13:40,398 WARN ]: Spent 192.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-06-22 04:13:40,701 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2018-06-22 04:13:40,703 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:13:40,703 INFO ]: Finished difference Result 20 states and 20 transitions. [2018-06-22 04:13:40,703 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 04:13:40,703 INFO ]: Start accepts. Automaton has 19 states. Word has length 15 [2018-06-22 04:13:40,703 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:13:40,703 INFO ]: With dead ends: 20 [2018-06-22 04:13:40,703 INFO ]: Without dead ends: 20 [2018-06-22 04:13:40,704 INFO ]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=275, Invalid=655, Unknown=0, NotChecked=0, Total=930 [2018-06-22 04:13:40,704 INFO ]: Start minimizeSevpa. Operand 20 states. [2018-06-22 04:13:40,706 INFO ]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-06-22 04:13:40,706 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-22 04:13:40,707 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-06-22 04:13:40,707 INFO ]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 15 [2018-06-22 04:13:40,707 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:13:40,707 INFO ]: Abstraction has 20 states and 20 transitions. [2018-06-22 04:13:40,707 INFO ]: Interpolant automaton has 19 states. [2018-06-22 04:13:40,707 INFO ]: Start isEmpty. Operand 20 states and 20 transitions. [2018-06-22 04:13:40,708 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-22 04:13:40,708 INFO ]: Found error trace [2018-06-22 04:13:40,708 INFO ]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:13:40,708 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:13:40,708 INFO ]: Analyzing trace with hash -1523145204, now seen corresponding path program 5 times [2018-06-22 04:13:40,708 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:13:40,708 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:13:40,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:13:40,709 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:13:40,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:13:41,394 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:13:42,514 WARN ]: Spent 310.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 7 [2018-06-22 04:13:42,719 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 23 [2018-06-22 04:13:43,077 WARN ]: Spent 335.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2018-06-22 04:13:43,635 WARN ]: Spent 437.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 82 [2018-06-22 04:13:44,290 WARN ]: Spent 574.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 89 [2018-06-22 04:13:44,914 WARN ]: Spent 560.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 99 [2018-06-22 04:13:45,326 INFO ]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:13:45,326 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:13:45,326 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 [2018-06-22 04:13:45,332 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 04:13:45,666 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-06-22 04:13:45,666 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:13:45,689 INFO ]: Computing forward predicates... [2018-06-22 04:13:46,526 WARN ]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-06-22 04:13:48,225 WARN ]: Spent 410.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 56 [2018-06-22 04:13:50,885 WARN ]: Spent 1.02 s on a formula simplification. DAG size of input: 197 DAG size of output: 75 [2018-06-22 04:13:53,859 WARN ]: Spent 2.32 s on a formula simplification. DAG size of input: 302 DAG size of output: 103 [2018-06-22 04:14:07,477 WARN ]: Spent 5.40 s on a formula simplification. DAG size of input: 474 DAG size of output: 118 [2018-06-22 04:14:13,963 WARN ]: Spent 5.18 s on a formula simplification. DAG size of input: 583 DAG size of output: 32 [2018-06-22 04:14:14,813 WARN ]: Spent 346.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 29 [2018-06-22 04:14:15,607 WARN ]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 26 [2018-06-22 04:14:16,662 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 23 [2018-06-22 04:14:17,275 INFO ]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:14:17,298 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:14:17,321 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2018-06-22 04:14:17,321 INFO ]: Interpolant automaton has 27 states [2018-06-22 04:14:17,321 INFO ]: Constructing interpolant automaton starting with 27 interpolants. [2018-06-22 04:14:17,322 INFO ]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2018-06-22 04:14:17,322 INFO ]: Start difference. First operand 20 states and 20 transitions. Second operand 27 states. [2018-06-22 04:14:17,523 WARN ]: Spent 150.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 53 [2018-06-22 04:14:17,731 WARN ]: Spent 186.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2018-06-22 04:14:18,028 WARN ]: Spent 274.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 92 Received shutdown request... [2018-06-22 04:14:18,130 WARN ]: Removed 8 from assertion stack [2018-06-22 04:14:18,131 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 04:14:18,131 WARN ]: Verification canceled [2018-06-22 04:14:18,141 WARN ]: Timeout [2018-06-22 04:14:18,142 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:14:18 BoogieIcfgContainer [2018-06-22 04:14:18,142 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:14:18,142 INFO ]: Toolchain (without parser) took 58096.62 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 246.5 MB in the beginning and 532.3 MB in the end (delta: -285.8 MB). Peak memory consumption was 910.6 MB. Max. memory is 3.6 GB. [2018-06-22 04:14:18,143 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:14:18,143 INFO ]: ChcToBoogie took 64.09 ms. Allocated memory is still 304.1 MB. Free memory was 246.5 MB in the beginning and 244.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:14:18,144 INFO ]: Boogie Preprocessor took 70.02 ms. Allocated memory is still 304.1 MB. Free memory was 244.5 MB in the beginning and 242.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:14:18,144 INFO ]: RCFGBuilder took 425.35 ms. Allocated memory is still 304.1 MB. Free memory was 242.5 MB in the beginning and 222.6 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:14:18,144 INFO ]: TraceAbstraction took 57528.63 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 222.6 MB in the beginning and 532.3 MB in the end (delta: -309.7 MB). Peak memory consumption was 886.7 MB. Max. memory is 3.6 GB. [2018-06-22 04:14:18,147 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 64.09 ms. Allocated memory is still 304.1 MB. Free memory was 246.5 MB in the beginning and 244.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 70.02 ms. Allocated memory is still 304.1 MB. Free memory was 244.5 MB in the beginning and 242.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 425.35 ms. Allocated memory is still 304.1 MB. Free memory was 242.5 MB in the beginning and 222.6 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 57528.63 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 222.6 MB in the beginning and 532.3 MB in the end (delta: -309.7 MB). Peak memory consumption was 886.7 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 (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (20states) and interpolant automaton (currently 6 states, 27 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 129. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 57.4s OverallTime, 6 OverallIterations, 12 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 12 SDslu, 178 SDs, 0 SdLazy, 56 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 28.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 51.6s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 76164 SizeOfPredicates, 14 NumberOfNonLiveVariables, 2230 ConjunctsInSsa, 355 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/272 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-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-14-18-156.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array_max-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-14-18-156.csv Completed graceful shutdown