java -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/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_1_e3_389_e6_167.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 14:55:54,167 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 14:55:54,174 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 14:55:54,201 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 14:55:54,201 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 14:55:54,203 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 14:55:54,212 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 14:55:54,219 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 14:55:54,227 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 14:55:54,228 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 14:55:54,229 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 14:55:54,229 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 14:55:54,230 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 14:55:54,234 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 14:55:54,234 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 14:55:54,247 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 14:55:54,249 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 14:55:54,251 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 14:55:54,263 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 14:55:54,264 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 14:55:54,269 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 14:55:54,272 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 14:55:54,272 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 14:55:54,272 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 14:55:54,279 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 14:55:54,280 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 14:55:54,281 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 14:55:54,285 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 14:55:54,286 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 14:55:54,287 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 14:55:54,287 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 14:55:54,296 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 14:55:54,297 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 14:55:54,297 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 14:55:54,298 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 14:55:54,298 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 14:55:54,341 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 14:55:54,341 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 14:55:54,342 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 14:55:54,342 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 14:55:54,347 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 14:55:54,347 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 14:55:54,347 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 14:55:54,348 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 14:55:54,348 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 14:55:54,348 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 14:55:54,348 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 14:55:54,348 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 14:55:54,349 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 14:55:54,349 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 14:55:54,349 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 14:55:54,349 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 14:55:54,349 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 14:55:54,357 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 14:55:54,357 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 14:55:54,448 INFO ]: Repository-Root is: /tmp [2018-06-18 14:55:54,467 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 14:55:54,470 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 14:55:54,472 INFO ]: Initializing SmtParser... [2018-06-18 14:55:54,472 INFO ]: SmtParser initialized [2018-06-18 14:55:54,473 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_1_e3_389_e6_167.smt2 [2018-06-18 14:55:54,474 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 [2018-06-18 14:55:54,578 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_1_e3_389_e6_167.smt2 unknown [2018-06-18 14:55:54,829 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_1_e3_389_e6_167.smt2 [2018-06-18 14:55:54,833 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 14:55:54,840 INFO ]: Walking toolchain with 4 elements. [2018-06-18 14:55:54,840 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 14:55:54,840 INFO ]: Initializing ChcToBoogie... [2018-06-18 14:55:54,841 INFO ]: ChcToBoogie initialized [2018-06-18 14:55:54,848 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 02:55:54" (1/1) ... [2018-06-18 14:55:54,919 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:54 Unit [2018-06-18 14:55:54,919 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 14:55:54,920 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 14:55:54,920 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 14:55:54,920 INFO ]: Boogie Preprocessor initialized [2018-06-18 14:55:54,947 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:54" (1/1) ... [2018-06-18 14:55:54,947 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:54" (1/1) ... [2018-06-18 14:55:54,954 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:54" (1/1) ... [2018-06-18 14:55:54,954 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:54" (1/1) ... [2018-06-18 14:55:54,957 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:54" (1/1) ... [2018-06-18 14:55:54,967 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:54" (1/1) ... [2018-06-18 14:55:54,969 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:54" (1/1) ... [2018-06-18 14:55:54,971 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 14:55:54,971 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 14:55:54,971 INFO ]: Initializing RCFGBuilder... [2018-06-18 14:55:54,971 INFO ]: RCFGBuilder initialized [2018-06-18 14:55:54,972 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:54" (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) [2018-06-18 14:55:54,990 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 14:55:54,990 INFO ]: Found specification of procedure False [2018-06-18 14:55:54,990 INFO ]: Found implementation of procedure False [2018-06-18 14:55:54,990 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 14:55:54,990 INFO ]: Found specification of procedure state [2018-06-18 14:55:54,990 INFO ]: Found implementation of procedure state [2018-06-18 14:55:54,991 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 14:55:54,991 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 14:55:54,991 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 [2018-06-18 14:55:55,360 INFO ]: Using library mode [2018-06-18 14:55:55,361 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 02:55:55 BoogieIcfgContainer [2018-06-18 14:55:55,361 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 14:55:55,362 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 14:55:55,362 INFO ]: Initializing TraceAbstraction... [2018-06-18 14:55:55,365 INFO ]: TraceAbstraction initialized [2018-06-18 14:55:55,366 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 02:55:54" (1/3) ... [2018-06-18 14:55:55,367 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5a1c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 02:55:55, skipping insertion in model container [2018-06-18 14:55:55,367 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:55:54" (2/3) ... [2018-06-18 14:55:55,367 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5a1c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 02:55:55, skipping insertion in model container [2018-06-18 14:55:55,367 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 02:55:55" (3/3) ... [2018-06-18 14:55:55,369 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 14:55:55,389 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 14:55:55,410 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 14:55:55,486 INFO ]: Using default assertion order modulation [2018-06-18 14:55:55,487 INFO ]: Interprodecural is true [2018-06-18 14:55:55,488 INFO ]: Hoare is false [2018-06-18 14:55:55,488 INFO ]: Compute interpolants for FPandBP [2018-06-18 14:55:55,488 INFO ]: Backedges is TWOTRACK [2018-06-18 14:55:55,488 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 14:55:55,488 INFO ]: Difference is false [2018-06-18 14:55:55,488 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 14:55:55,488 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 14:55:55,508 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 14:55:55,519 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 14:55:55,519 INFO ]: Found error trace [2018-06-18 14:55:55,520 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:55:55,520 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:55:55,524 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 14:55:55,525 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:55:55,526 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:55:55,562 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:55:55,562 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:55:55,562 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:55:55,627 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:55:55,633 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:55:55,799 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 14:55:55,802 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 14:55:55,802 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 14:55:55,804 INFO ]: Interpolant automaton has 4 states [2018-06-18 14:55:55,818 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 14:55:55,819 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 14:55:55,821 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 14:55:55,925 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:55:55,925 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 14:55:55,927 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 14:55:55,929 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 14:55:55,929 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:55:55,965 INFO ]: With dead ends: 13 [2018-06-18 14:55:55,965 INFO ]: Without dead ends: 13 [2018-06-18 14:55:55,967 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 14:55:55,990 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 14:55:56,033 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 14:55:56,035 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 14:55:56,035 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 14:55:56,039 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 14:55:56,039 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:55:56,039 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 14:55:56,039 INFO ]: Interpolant automaton has 4 states. [2018-06-18 14:55:56,040 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 14:55:56,041 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 14:55:56,041 INFO ]: Found error trace [2018-06-18 14:55:56,041 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:55:56,041 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:55:56,042 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 14:55:56,042 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:55:56,042 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:55:56,054 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:55:56,054 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:55:56,054 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:55:56,145 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:55:56,149 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:55:56,596 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 14:55:56,596 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 14:55:56,596 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 [2018-06-18 14:55:56,606 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:55:56,673 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:55:56,684 INFO ]: Computing forward predicates... [2018-06-18 14:55:57,207 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 14:55:57,246 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 14:55:57,246 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-18 14:55:57,247 INFO ]: Interpolant automaton has 7 states [2018-06-18 14:55:57,247 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-18 14:55:57,247 INFO ]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-18 14:55:57,247 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-06-18 14:55:57,530 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:55:57,530 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 14:55:57,531 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 14:55:57,531 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-18 14:55:57,531 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:55:57,532 INFO ]: With dead ends: 15 [2018-06-18 14:55:57,532 INFO ]: Without dead ends: 15 [2018-06-18 14:55:57,533 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-06-18 14:55:57,533 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 14:55:57,535 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 14:55:57,535 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 14:55:57,536 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 14:55:57,536 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 14:55:57,536 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:55:57,536 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 14:55:57,536 INFO ]: Interpolant automaton has 7 states. [2018-06-18 14:55:57,537 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 14:55:57,537 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 14:55:57,537 INFO ]: Found error trace [2018-06-18 14:55:57,537 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:55:57,537 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:55:57,537 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 14:55:57,537 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:55:57,537 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:55:57,538 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:55:57,538 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:55:57,538 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:55:57,626 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:55:57,627 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:55:58,198 WARN ]: Spent 379.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2018-06-18 14:55:58,544 WARN ]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-06-18 14:55:58,971 WARN ]: Spent 397.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-06-18 14:55:59,021 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 14:55:59,021 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 14:55:59,021 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 [2018-06-18 14:55:59,032 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 14:55:59,093 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 14:55:59,093 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:55:59,098 INFO ]: Computing forward predicates... [2018-06-18 14:55:59,211 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:55:59,242 WARN ]: expecting exponential blowup for input size 8 [2018-06-18 14:56:01,726 WARN ]: Spent 271.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2018-06-18 14:56:02,015 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 14:56:02,049 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 14:56:02,049 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-18 14:56:02,050 INFO ]: Interpolant automaton has 12 states [2018-06-18 14:56:02,050 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-18 14:56:02,050 INFO ]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-06-18 14:56:02,050 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-18 14:56:02,566 WARN ]: Spent 354.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2018-06-18 14:56:02,988 WARN ]: Spent 381.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2018-06-18 14:56:03,451 WARN ]: Spent 237.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2018-06-18 14:56:03,483 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:56:03,483 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 14:56:03,485 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 14:56:03,485 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-18 14:56:03,485 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:56:03,485 INFO ]: With dead ends: 17 [2018-06-18 14:56:03,486 INFO ]: Without dead ends: 17 [2018-06-18 14:56:03,486 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-06-18 14:56:03,486 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 14:56:03,491 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 14:56:03,492 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 14:56:03,492 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 14:56:03,492 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 14:56:03,492 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:56:03,492 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 14:56:03,492 INFO ]: Interpolant automaton has 12 states. [2018-06-18 14:56:03,493 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 14:56:03,493 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 14:56:03,493 INFO ]: Found error trace [2018-06-18 14:56:03,493 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:56:03,493 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:56:03,494 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-18 14:56:03,494 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:56:03,494 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:56:03,494 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:03,495 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 14:56:03,495 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:03,563 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:03,564 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:56:04,255 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 14:56:04,256 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 14:56:04,256 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 [2018-06-18 14:56:04,270 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-18 14:56:04,368 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 14:56:04,368 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:04,373 INFO ]: Computing forward predicates... [2018-06-18 14:56:04,474 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:04,474 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:04,476 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 14:56:06,531 WARN ]: Spent 363.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2018-06-18 14:56:06,866 WARN ]: Spent 181.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2018-06-18 14:56:07,076 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 22 [2018-06-18 14:56:08,361 WARN ]: Spent 219.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2018-06-18 14:56:08,377 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 14:56:08,399 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 14:56:08,399 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-18 14:56:08,399 INFO ]: Interpolant automaton has 16 states [2018-06-18 14:56:08,399 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-18 14:56:08,400 INFO ]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2018-06-18 14:56:08,400 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-18 14:56:08,605 WARN ]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 35 [2018-06-18 14:56:09,353 WARN ]: Spent 654.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 133 [2018-06-18 14:56:10,499 WARN ]: Spent 1.07 s on a formula simplification. DAG size of input: 190 DAG size of output: 131 [2018-06-18 14:56:11,176 WARN ]: Spent 604.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 129 [2018-06-18 14:56:11,737 WARN ]: Spent 485.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 110 [2018-06-18 14:56:11,781 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:56:11,782 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-18 14:56:11,782 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-18 14:56:11,782 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-18 14:56:11,782 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:56:11,783 INFO ]: With dead ends: 19 [2018-06-18 14:56:11,783 INFO ]: Without dead ends: 19 [2018-06-18 14:56:11,783 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-06-18 14:56:11,784 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-18 14:56:11,786 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-18 14:56:11,786 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-18 14:56:11,787 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-18 14:56:11,787 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-18 14:56:11,787 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:56:11,787 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-18 14:56:11,787 INFO ]: Interpolant automaton has 16 states. [2018-06-18 14:56:11,787 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-18 14:56:11,788 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-18 14:56:11,788 INFO ]: Found error trace [2018-06-18 14:56:11,788 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:56:11,788 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:56:11,788 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-18 14:56:11,788 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:56:11,788 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:56:11,789 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:11,789 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 14:56:11,789 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:11,846 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:11,847 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:56:12,402 WARN ]: Spent 278.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2018-06-18 14:56:12,684 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2018-06-18 14:56:13,074 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 14:56:13,075 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 14:56:13,075 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 [2018-06-18 14:56:13,081 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-18 14:56:13,170 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 14:56:13,171 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:13,179 INFO ]: Computing forward predicates... [2018-06-18 14:56:13,283 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:13,284 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:13,285 WARN ]: expecting exponential blowup for input size 9 [2018-06-18 14:56:14,663 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 24 [2018-06-18 14:56:16,481 WARN ]: Spent 1.50 s on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2018-06-18 14:56:17,043 WARN ]: Spent 419.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2018-06-18 14:56:17,688 WARN ]: Spent 374.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2018-06-18 14:56:19,232 WARN ]: Spent 210.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2018-06-18 14:56:19,827 WARN ]: Spent 213.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2018-06-18 14:56:20,643 WARN ]: Spent 400.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 47 [2018-06-18 14:56:20,659 INFO ]: Checked inductivity of 36 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-18 14:56:20,680 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 14:56:20,680 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2018-06-18 14:56:20,681 INFO ]: Interpolant automaton has 20 states [2018-06-18 14:56:20,681 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-18 14:56:20,681 INFO ]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2018-06-18 14:56:20,681 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-18 14:56:21,290 WARN ]: Spent 481.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 107 [2018-06-18 14:56:21,907 WARN ]: Spent 568.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 93 [2018-06-18 14:56:22,520 WARN ]: Spent 555.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 103 [2018-06-18 14:56:23,242 WARN ]: Spent 660.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 115 [2018-06-18 14:56:23,838 WARN ]: Spent 521.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 100 [2018-06-18 14:56:24,366 WARN ]: Spent 460.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 95 [2018-06-18 14:56:24,862 WARN ]: Spent 437.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 85 [2018-06-18 14:56:24,923 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:56:24,923 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-18 14:56:24,924 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-18 14:56:24,924 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-18 14:56:24,924 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:56:24,925 INFO ]: With dead ends: 25 [2018-06-18 14:56:24,925 INFO ]: Without dead ends: 25 [2018-06-18 14:56:24,925 INFO ]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2018-06-18 14:56:24,925 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-18 14:56:24,929 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-18 14:56:24,929 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-18 14:56:24,930 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-18 14:56:24,930 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 25 [2018-06-18 14:56:24,930 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:56:24,930 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-18 14:56:24,930 INFO ]: Interpolant automaton has 20 states. [2018-06-18 14:56:24,930 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-18 14:56:24,932 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-18 14:56:24,932 INFO ]: Found error trace [2018-06-18 14:56:24,932 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:56:24,932 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:56:24,932 INFO ]: Analyzing trace with hash -1494134477, now seen corresponding path program 5 times [2018-06-18 14:56:24,932 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:56:24,932 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:56:24,933 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:24,933 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 14:56:24,933 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:25,105 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:25,106 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:56:26,730 WARN ]: Spent 809.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2018-06-18 14:56:26,949 WARN ]: Spent 172.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2018-06-18 14:56:27,486 WARN ]: Spent 475.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 84 [2018-06-18 14:56:27,769 WARN ]: Spent 248.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2018-06-18 14:56:28,191 WARN ]: Spent 380.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 88 [2018-06-18 14:56:28,675 WARN ]: Spent 440.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 109 [2018-06-18 14:56:29,018 WARN ]: Spent 266.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 75 [2018-06-18 14:56:29,480 WARN ]: Spent 356.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2018-06-18 14:56:29,707 WARN ]: Spent 176.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2018-06-18 14:56:30,331 WARN ]: Spent 312.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 55 [2018-06-18 14:56:30,613 WARN ]: Spent 219.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 46 [2018-06-18 14:56:30,984 WARN ]: Spent 309.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 60 [2018-06-18 14:56:31,209 WARN ]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 34 [2018-06-18 14:56:31,275 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-18 14:56:31,275 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 14:56:31,275 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 [2018-06-18 14:56:31,281 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-18 14:56:31,403 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-06-18 14:56:31,403 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:31,416 INFO ]: Computing forward predicates... [2018-06-18 14:56:31,442 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:31,944 WARN ]: Spent 182.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 23 [2018-06-18 14:56:33,990 WARN ]: Spent 1.18 s on a formula simplification. DAG size of input: 177 DAG size of output: 58 [2018-06-18 14:56:35,425 WARN ]: Spent 1.06 s on a formula simplification. DAG size of input: 151 DAG size of output: 65 [2018-06-18 14:56:37,378 WARN ]: Spent 1.53 s on a formula simplification. DAG size of input: 200 DAG size of output: 67 [2018-06-18 14:56:37,875 WARN ]: Spent 372.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-06-18 14:56:38,427 WARN ]: Spent 378.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2018-06-18 14:56:38,797 WARN ]: Spent 264.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2018-06-18 14:56:39,221 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2018-06-18 14:56:39,596 WARN ]: Spent 201.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2018-06-18 14:56:40,384 WARN ]: Spent 428.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 48 [2018-06-18 14:56:43,841 WARN ]: Spent 2.41 s on a formula simplification. DAG size of input: 336 DAG size of output: 55 [2018-06-18 14:56:47,565 WARN ]: Spent 2.50 s on a formula simplification. DAG size of input: 340 DAG size of output: 66 [2018-06-18 14:56:52,063 WARN ]: Spent 3.11 s on a formula simplification. DAG size of input: 389 DAG size of output: 66 [2018-06-18 14:56:52,089 INFO ]: Checked inductivity of 105 backedges. 1 proven. 76 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-18 14:56:52,110 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 14:56:52,111 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32 [2018-06-18 14:56:52,111 INFO ]: Interpolant automaton has 32 states [2018-06-18 14:56:52,111 INFO ]: Constructing interpolant automaton starting with 32 interpolants. [2018-06-18 14:56:52,111 INFO ]: CoverageRelationStatistics Valid=70, Invalid=922, Unknown=0, NotChecked=0, Total=992 [2018-06-18 14:56:52,112 INFO ]: Start difference. First operand 25 states and 26 transitions. Second operand 32 states. [2018-06-18 14:56:52,978 WARN ]: Spent 659.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 Received shutdown request... [2018-06-18 14:56:55,074 WARN ]: Removed 18 from assertion stack [2018-06-18 14:56:55,074 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 14:56:55,074 WARN ]: Verification canceled [2018-06-18 14:56:55,078 WARN ]: Timeout [2018-06-18 14:56:55,078 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 02:56:55 BoogieIcfgContainer [2018-06-18 14:56:55,078 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 14:56:55,079 INFO ]: Toolchain (without parser) took 60245.27 ms. Allocated memory was 309.3 MB in the beginning and 922.7 MB in the end (delta: 613.4 MB). Free memory was 259.7 MB in the beginning and 453.3 MB in the end (delta: -193.5 MB). Peak memory consumption was 419.9 MB. Max. memory is 3.6 GB. [2018-06-18 14:56:55,080 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 14:56:55,080 INFO ]: ChcToBoogie took 78.94 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 257.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 14:56:55,081 INFO ]: Boogie Preprocessor took 50.97 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 255.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 14:56:55,081 INFO ]: RCFGBuilder took 389.57 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 245.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-18 14:56:55,082 INFO ]: TraceAbstraction took 59716.23 ms. Allocated memory was 309.3 MB in the beginning and 922.7 MB in the end (delta: 613.4 MB). Free memory was 243.8 MB in the beginning and 453.3 MB in the end (delta: -209.5 MB). Peak memory consumption was 403.9 MB. Max. memory is 3.6 GB. [2018-06-18 14:56:55,086 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 78.94 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 257.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 50.97 ms. Allocated memory is still 309.3 MB. Free memory was 257.7 MB in the beginning and 255.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 389.57 ms. Allocated memory is still 309.3 MB. Free memory was 255.7 MB in the beginning and 245.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 59716.23 ms. Allocated memory was 309.3 MB in the beginning and 922.7 MB in the end (delta: 613.4 MB). Free memory was 243.8 MB in the beginning and 453.3 MB in the end (delta: -209.5 MB). Peak memory consumption was 403.9 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 (25states) and interpolant automaton (currently 4 states, 32 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 401. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 59.6s OverallTime, 6 OverallIterations, 8 TraceHistogramMax, 12.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 59 SDtfs, 94 SDslu, 332 SDs, 0 SdLazy, 266 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 40.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 45.7s InterpolantComputationTime, 235 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 417684 SizeOfPredicates, 347 NumberOfNonLiveVariables, 1842 ConjunctsInSsa, 427 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 98/350 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/durationThm_1_e3_389_e6_167.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_14-56-55-096.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/durationThm_1_e3_389_e6_167.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_14-56-55-096.csv Completed graceful shutdown