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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig03.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:53:47,884 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:53:47,885 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:53:47,897 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:53:47,897 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:53:47,898 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:53:47,899 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:53:47,901 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:53:47,902 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:53:47,903 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:53:47,903 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:53:47,904 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:53:47,905 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:53:47,906 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:53:47,906 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:53:47,907 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:53:47,909 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:53:47,911 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:53:47,912 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:53:47,913 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:53:47,914 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:53:47,917 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:53:47,917 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:53:47,917 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:53:47,918 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:53:47,919 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:53:47,920 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:53:47,920 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:53:47,921 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:53:47,922 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:53:47,922 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:53:47,923 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:53:47,923 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:53:47,924 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:53:47,925 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:53:47,925 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 14:53:47,939 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:53:47,939 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:53:47,939 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:53:47,940 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:53:47,941 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:53:47,941 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:53:47,941 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:53:47,941 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:53:47,942 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:53:47,942 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:53:47,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:53:47,942 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:53:47,943 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:53:47,947 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:53:47,947 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:53:47,947 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:53:47,947 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:53:47,948 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:53:47,948 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:53:47,949 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:53:47,949 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:53:47,999 INFO ]: Repository-Root is: /tmp [2018-06-22 14:53:48,015 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:53:48,018 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:53:48,020 INFO ]: Initializing SmtParser... [2018-06-22 14:53:48,020 INFO ]: SmtParser initialized [2018-06-22 14:53:48,021 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig03.c.smt2 [2018-06-22 14:53:48,022 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 14:53:48,114 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig03.c.smt2 unknown [2018-06-22 14:53:48,305 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig03.c.smt2 [2018-06-22 14:53:48,309 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:53:48,314 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:53:48,315 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:53:48,317 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:53:48,317 INFO ]: ChcToBoogie initialized [2018-06-22 14:53:48,320 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:53:48" (1/1) ... [2018-06-22 14:53:48,364 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:53:48 Unit [2018-06-22 14:53:48,364 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:53:48,366 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:53:48,366 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:53:48,366 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:53:48,387 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:53:48" (1/1) ... [2018-06-22 14:53:48,387 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:53:48" (1/1) ... [2018-06-22 14:53:48,395 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:53:48" (1/1) ... [2018-06-22 14:53:48,395 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:53:48" (1/1) ... [2018-06-22 14:53:48,398 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:53:48" (1/1) ... [2018-06-22 14:53:48,399 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:53:48" (1/1) ... [2018-06-22 14:53:48,400 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:53:48" (1/1) ... [2018-06-22 14:53:48,409 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:53:48,409 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:53:48,409 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:53:48,409 INFO ]: RCFGBuilder initialized [2018-06-22 14:53:48,410 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:53:48" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:53:48,426 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:53:48,426 INFO ]: Found specification of procedure False [2018-06-22 14:53:48,426 INFO ]: Found implementation of procedure False [2018-06-22 14:53:48,426 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:53:48,426 INFO ]: Found specification of procedure state [2018-06-22 14:53:48,426 INFO ]: Found implementation of procedure state [2018-06-22 14:53:48,426 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:53:48,426 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:53:48,426 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 14:53:48,638 INFO ]: Using library mode [2018-06-22 14:53:48,639 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:53:48 BoogieIcfgContainer [2018-06-22 14:53:48,639 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:53:48,640 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:53:48,640 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:53:48,644 INFO ]: TraceAbstraction initialized [2018-06-22 14:53:48,644 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:53:48" (1/3) ... [2018-06-22 14:53:48,645 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705c16e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:53:48, skipping insertion in model container [2018-06-22 14:53:48,645 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:53:48" (2/3) ... [2018-06-22 14:53:48,645 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705c16e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:53:48, skipping insertion in model container [2018-06-22 14:53:48,645 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:53:48" (3/3) ... [2018-06-22 14:53:48,647 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:53:48,666 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:53:48,682 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:53:48,737 INFO ]: Using default assertion order modulation [2018-06-22 14:53:48,737 INFO ]: Interprodecural is true [2018-06-22 14:53:48,737 INFO ]: Hoare is false [2018-06-22 14:53:48,737 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:53:48,737 INFO ]: Backedges is TWOTRACK [2018-06-22 14:53:48,737 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:53:48,737 INFO ]: Difference is false [2018-06-22 14:53:48,738 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:53:48,738 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:53:48,756 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:53:48,767 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:53:48,768 INFO ]: Found error trace [2018-06-22 14:53:48,768 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:53:48,769 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:53:48,774 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 14:53:48,775 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:53:48,776 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:53:48,818 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:53:48,818 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:53:48,818 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:53:48,847 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:53:48,924 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:53:48,926 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:53:48,926 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:53:48,927 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:53:48,940 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:53:48,940 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:53:48,942 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:53:49,019 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:53:49,019 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:53:49,019 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:53:49,020 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:53:49,021 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:53:49,029 INFO ]: With dead ends: 13 [2018-06-22 14:53:49,029 INFO ]: Without dead ends: 13 [2018-06-22 14:53:49,031 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 [2018-06-22 14:53:49,043 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:53:49,062 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:53:49,063 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:53:49,064 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:53:49,065 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:53:49,065 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:53:49,065 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:53:49,065 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:53:49,065 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:53:49,066 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:53:49,066 INFO ]: Found error trace [2018-06-22 14:53:49,066 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:53:49,066 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:53:49,067 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 14:53:49,067 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:53:49,067 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:53:49,068 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:53:49,068 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:53:49,068 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:53:49,094 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:53:49,314 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:53:49,314 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:53:49,314 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 14:53:49,324 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:53:49,356 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:53:49,365 INFO ]: Computing forward predicates... [2018-06-22 14:53:49,721 WARN ]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:53:49,887 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:53:49,921 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:53:49,921 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 14:53:49,921 INFO ]: Interpolant automaton has 9 states [2018-06-22 14:53:49,921 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 14:53:49,922 INFO ]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-22 14:53:49,922 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 14:53:50,472 WARN ]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 14:53:50,599 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:53:50,600 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:53:50,601 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:53:50,601 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 14:53:50,602 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:53:50,602 INFO ]: With dead ends: 15 [2018-06-22 14:53:50,602 INFO ]: Without dead ends: 15 [2018-06-22 14:53:50,603 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-22 14:53:50,603 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:53:50,607 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:53:50,607 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:53:50,608 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:53:50,608 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:53:50,608 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:53:50,608 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:53:50,608 INFO ]: Interpolant automaton has 9 states. [2018-06-22 14:53:50,608 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:53:50,609 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:53:50,609 INFO ]: Found error trace [2018-06-22 14:53:50,609 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:53:50,609 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:53:50,609 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 14:53:50,610 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:53:50,610 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:53:50,611 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:53:50,613 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:53:50,613 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:53:50,655 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:53:50,876 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:53:50,876 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:53:50,876 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 14:53:50,887 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:53:50,915 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:53:50,915 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:53:50,918 INFO ]: Computing forward predicates... [2018-06-22 14:53:51,454 WARN ]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:53:51,564 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:53:51,583 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:53:51,583 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-22 14:53:51,584 INFO ]: Interpolant automaton has 11 states [2018-06-22 14:53:51,584 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 14:53:51,584 INFO ]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-06-22 14:53:51,584 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-22 14:53:51,979 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 15 [2018-06-22 14:53:52,000 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:53:52,000 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:53:52,001 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:53:52,001 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 14:53:52,001 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:53:52,001 INFO ]: With dead ends: 17 [2018-06-22 14:53:52,001 INFO ]: Without dead ends: 17 [2018-06-22 14:53:52,002 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:53:52,002 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:53:52,003 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:53:52,004 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:53:52,004 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:53:52,004 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 14:53:52,004 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:53:52,004 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:53:52,004 INFO ]: Interpolant automaton has 11 states. [2018-06-22 14:53:52,004 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:53:52,005 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:53:52,005 INFO ]: Found error trace [2018-06-22 14:53:52,005 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:53:52,006 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:53:52,006 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 14:53:52,006 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:53:52,006 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:53:52,007 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:53:52,007 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:53:52,007 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:53:52,062 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:53:52,391 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:53:52,391 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:53:52,391 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 14:53:52,409 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:53:52,450 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 14:53:52,450 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:53:52,455 INFO ]: Computing forward predicates... [2018-06-22 14:53:52,809 WARN ]: Spent 250.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2018-06-22 14:53:53,479 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:53:53,499 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:53:53,499 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 14:53:53,499 INFO ]: Interpolant automaton has 17 states [2018-06-22 14:53:53,499 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 14:53:53,499 INFO ]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2018-06-22 14:53:53,500 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 14:53:53,680 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2018-06-22 14:53:53,920 WARN ]: Spent 126.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2018-06-22 14:53:54,055 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:53:54,055 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 14:53:54,056 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 14:53:54,056 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 14:53:54,056 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:53:54,057 INFO ]: With dead ends: 19 [2018-06-22 14:53:54,057 INFO ]: Without dead ends: 19 [2018-06-22 14:53:54,057 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2018-06-22 14:53:54,058 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 14:53:54,060 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 14:53:54,060 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 14:53:54,060 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 14:53:54,060 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 14:53:54,060 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:53:54,060 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 14:53:54,060 INFO ]: Interpolant automaton has 17 states. [2018-06-22 14:53:54,061 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 14:53:54,061 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 14:53:54,061 INFO ]: Found error trace [2018-06-22 14:53:54,061 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:53:54,061 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:53:54,061 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 14:53:54,061 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:53:54,062 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:53:54,062 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:53:54,062 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:53:54,062 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:53:54,089 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:53:54,481 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:53:54,482 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:53:54,482 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 14:53:54,495 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 14:53:54,529 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 14:53:54,529 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:53:54,533 INFO ]: Computing forward predicates... [2018-06-22 14:54:00,186 WARN ]: Spent 4.92 s on a formula simplification. DAG size of input: 580 DAG size of output: 82 [2018-06-22 14:54:00,909 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:54:00,928 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:54:00,928 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2018-06-22 14:54:00,928 INFO ]: Interpolant automaton has 20 states [2018-06-22 14:54:00,929 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 14:54:00,929 INFO ]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2018-06-22 14:54:00,930 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 14:54:01,635 WARN ]: Spent 668.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2018-06-22 14:54:01,876 WARN ]: Spent 193.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 39 [2018-06-22 14:54:02,266 WARN ]: Spent 363.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 46 [2018-06-22 14:54:02,649 WARN ]: Spent 346.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 36 [2018-06-22 14:54:03,369 WARN ]: Spent 579.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2018-06-22 14:54:03,400 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:54:03,400 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:54:03,400 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:54:03,400 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 14:54:03,400 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:54:03,401 INFO ]: With dead ends: 21 [2018-06-22 14:54:03,401 INFO ]: Without dead ends: 21 [2018-06-22 14:54:03,401 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2018-06-22 14:54:03,401 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:54:03,404 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:54:03,404 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:54:03,405 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:54:03,405 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 14:54:03,405 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:54:03,405 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:54:03,405 INFO ]: Interpolant automaton has 20 states. [2018-06-22 14:54:03,405 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:54:03,406 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:54:03,406 INFO ]: Found error trace [2018-06-22 14:54:03,406 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:54:03,406 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:54:03,406 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 5 times [2018-06-22 14:54:03,406 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:54:03,406 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:54:03,407 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:54:03,407 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:54:03,407 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:54:03,473 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:54:04,062 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:54:04,062 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:54:04,063 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 14:54:04,077 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 14:54:04,112 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 14:54:04,112 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:54:04,116 INFO ]: Computing forward predicates... [2018-06-22 14:54:04,537 WARN ]: Spent 293.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 35 [2018-06-22 14:54:05,342 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:54:05,361 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:54:05,361 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2018-06-22 14:54:05,361 INFO ]: Interpolant automaton has 20 states [2018-06-22 14:54:05,361 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 14:54:05,362 INFO ]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2018-06-22 14:54:05,362 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 20 states. [2018-06-22 14:54:05,703 WARN ]: Spent 314.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2018-06-22 14:54:05,851 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2018-06-22 14:54:06,124 WARN ]: Spent 246.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2018-06-22 14:54:06,353 WARN ]: Spent 200.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2018-06-22 14:54:06,570 WARN ]: Spent 197.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 29 [2018-06-22 14:54:06,892 WARN ]: Spent 298.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2018-06-22 14:54:07,028 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:54:07,029 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 14:54:07,029 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 14:54:07,029 INFO ]: Start accepts. Automaton has 20 states. Word has length 29 [2018-06-22 14:54:07,029 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:54:07,030 INFO ]: With dead ends: 23 [2018-06-22 14:54:07,030 INFO ]: Without dead ends: 23 [2018-06-22 14:54:07,030 INFO ]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2018-06-22 14:54:07,030 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 14:54:07,034 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 14:54:07,034 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 14:54:07,034 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 14:54:07,034 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-22 14:54:07,035 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:54:07,035 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 14:54:07,035 INFO ]: Interpolant automaton has 20 states. [2018-06-22 14:54:07,035 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 14:54:07,035 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 14:54:07,035 INFO ]: Found error trace [2018-06-22 14:54:07,036 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:54:07,036 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:54:07,036 INFO ]: Analyzing trace with hash 800064122, now seen corresponding path program 6 times [2018-06-22 14:54:07,036 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:54:07,036 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:54:07,036 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:54:07,036 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:54:07,036 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:54:07,067 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:54:07,810 WARN ]: Spent 519.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-06-22 14:54:08,373 WARN ]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-06-22 14:54:08,632 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 14:54:08,632 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:54:08,632 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:54:08,638 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 14:54:08,689 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-22 14:54:08,689 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:54:08,693 INFO ]: Computing forward predicates... [2018-06-22 14:54:09,158 WARN ]: Spent 371.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 37 [2018-06-22 14:54:10,168 WARN ]: Spent 966.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 54 [2018-06-22 14:54:11,242 WARN ]: Spent 959.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 55 [2018-06-22 14:54:11,827 WARN ]: Spent 546.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2018-06-22 14:54:13,402 INFO ]: Checked inductivity of 78 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 14:54:13,432 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:54:13,432 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 27 [2018-06-22 14:54:13,433 INFO ]: Interpolant automaton has 27 states [2018-06-22 14:54:13,433 INFO ]: Constructing interpolant automaton starting with 27 interpolants. [2018-06-22 14:54:13,433 INFO ]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2018-06-22 14:54:13,433 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 27 states. [2018-06-22 14:54:14,628 WARN ]: Spent 1.16 s on a formula simplification. DAG size of input: 124 DAG size of output: 99 [2018-06-22 14:54:15,151 WARN ]: Spent 467.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 52 [2018-06-22 14:54:15,773 WARN ]: Spent 591.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 32 [2018-06-22 14:54:16,537 WARN ]: Spent 734.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 51 [2018-06-22 14:54:17,229 WARN ]: Spent 653.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 33 [2018-06-22 14:54:18,392 WARN ]: Spent 1.11 s on a formula simplification. DAG size of input: 124 DAG size of output: 56 [2018-06-22 14:54:19,486 WARN ]: Spent 1.01 s on a formula simplification. DAG size of input: 121 DAG size of output: 92 [2018-06-22 14:54:20,658 WARN ]: Spent 1.08 s on a formula simplification. DAG size of input: 122 DAG size of output: 98 [2018-06-22 14:54:20,691 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:54:20,691 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-22 14:54:20,691 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 14:54:20,691 INFO ]: Start accepts. Automaton has 27 states. Word has length 33 [2018-06-22 14:54:20,691 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:54:20,692 INFO ]: With dead ends: 27 [2018-06-22 14:54:20,692 INFO ]: Without dead ends: 27 [2018-06-22 14:54:20,693 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 14:54:20,693 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 14:54:20,696 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 14:54:20,696 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 14:54:20,697 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-22 14:54:20,697 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 33 [2018-06-22 14:54:20,697 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:54:20,697 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-22 14:54:20,697 INFO ]: Interpolant automaton has 27 states. [2018-06-22 14:54:20,697 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-22 14:54:20,698 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 14:54:20,698 INFO ]: Found error trace [2018-06-22 14:54:20,698 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:54:20,698 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:54:20,698 INFO ]: Analyzing trace with hash -544278078, now seen corresponding path program 7 times [2018-06-22 14:54:20,698 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:54:20,698 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:54:20,699 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:54:20,699 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:54:20,699 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:54:20,809 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:54:21,793 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 14:54:21,793 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:54:21,793 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:54:21,802 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:54:21,846 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:54:21,852 INFO ]: Computing forward predicates... [2018-06-22 14:54:26,625 WARN ]: Spent 4.16 s on a formula simplification. DAG size of input: 714 DAG size of output: 66 [2018-06-22 14:54:26,813 WARN ]: Spent 151.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2018-06-22 14:54:26,977 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2018-06-22 14:54:27,167 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2018-06-22 14:54:30,139 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 14:54:30,157 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:54:30,158 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 37 [2018-06-22 14:54:30,158 INFO ]: Interpolant automaton has 37 states [2018-06-22 14:54:30,158 INFO ]: Constructing interpolant automaton starting with 37 interpolants. [2018-06-22 14:54:30,158 INFO ]: CoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2018-06-22 14:54:30,158 INFO ]: Start difference. First operand 27 states and 28 transitions. Second operand 37 states. [2018-06-22 14:54:30,970 WARN ]: Spent 767.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 96 [2018-06-22 14:54:31,330 WARN ]: Spent 296.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 37 [2018-06-22 14:54:31,856 WARN ]: Spent 475.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 37 [2018-06-22 14:54:32,398 WARN ]: Spent 497.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 51 [2018-06-22 14:54:32,855 WARN ]: Spent 413.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 47 [2018-06-22 14:54:33,430 WARN ]: Spent 533.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 51 [2018-06-22 14:54:34,045 WARN ]: Spent 556.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 70 [2018-06-22 14:54:34,631 WARN ]: Spent 527.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 55 [2018-06-22 14:54:35,468 WARN ]: Spent 779.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 97 [2018-06-22 14:54:35,514 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:54:35,515 INFO ]: Finished difference Result 29 states and 30 transitions. [2018-06-22 14:54:35,516 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 14:54:35,516 INFO ]: Start accepts. Automaton has 37 states. Word has length 41 [2018-06-22 14:54:35,516 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:54:35,517 INFO ]: With dead ends: 29 [2018-06-22 14:54:35,517 INFO ]: Without dead ends: 29 [2018-06-22 14:54:35,518 INFO ]: 0 DeclaredPredicates, 69 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=335, Invalid=1735, Unknown=0, NotChecked=0, Total=2070 [2018-06-22 14:54:35,518 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 14:54:35,522 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-22 14:54:35,522 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 14:54:35,523 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-06-22 14:54:35,523 INFO ]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 41 [2018-06-22 14:54:35,523 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:54:35,523 INFO ]: Abstraction has 29 states and 30 transitions. [2018-06-22 14:54:35,523 INFO ]: Interpolant automaton has 37 states. [2018-06-22 14:54:35,523 INFO ]: Start isEmpty. Operand 29 states and 30 transitions. [2018-06-22 14:54:35,524 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 14:54:35,524 INFO ]: Found error trace [2018-06-22 14:54:35,524 INFO ]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:54:35,524 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:54:35,525 INFO ]: Analyzing trace with hash 1442343014, now seen corresponding path program 8 times [2018-06-22 14:54:35,525 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:54:35,525 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:54:35,525 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:54:35,525 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:54:35,525 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:54:35,592 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:54:36,522 WARN ]: Spent 645.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2018-06-22 14:54:37,459 INFO ]: Checked inductivity of 171 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 14:54:37,459 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:54:37,459 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:54:37,465 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:54:37,520 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:54:37,520 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:54:37,525 INFO ]: Computing forward predicates... [2018-06-22 14:54:41,246 WARN ]: Spent 3.00 s on a formula simplification. DAG size of input: 580 DAG size of output: 82 [2018-06-22 14:54:41,473 WARN ]: Spent 186.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2018-06-22 14:54:41,881 WARN ]: Spent 354.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2018-06-22 14:54:42,048 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2018-06-22 14:54:43,670 WARN ]: Spent 1.52 s on a formula simplification. DAG size of input: 108 DAG size of output: 65 [2018-06-22 14:54:44,837 WARN ]: Spent 1.08 s on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2018-06-22 14:54:45,013 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2018-06-22 14:54:48,336 INFO ]: Checked inductivity of 171 backedges. 1 proven. 125 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 14:54:48,355 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:54:48,355 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 41 [2018-06-22 14:54:48,355 INFO ]: Interpolant automaton has 41 states [2018-06-22 14:54:48,355 INFO ]: Constructing interpolant automaton starting with 41 interpolants. [2018-06-22 14:54:48,356 INFO ]: CoverageRelationStatistics Valid=152, Invalid=1488, Unknown=0, NotChecked=0, Total=1640 [2018-06-22 14:54:48,356 INFO ]: Start difference. First operand 29 states and 30 transitions. Second operand 41 states. Received shutdown request... [2018-06-22 14:54:50,455 WARN ]: Removed 2 from assertion stack [2018-06-22 14:54:50,455 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 14:54:50,455 WARN ]: Verification canceled [2018-06-22 14:54:50,458 WARN ]: Timeout [2018-06-22 14:54:50,459 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:54:50 BoogieIcfgContainer [2018-06-22 14:54:50,459 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:54:50,459 INFO ]: Toolchain (without parser) took 62150.07 ms. Allocated memory was 307.2 MB in the beginning and 810.0 MB in the end (delta: 502.8 MB). Free memory was 261.8 MB in the beginning and 317.2 MB in the end (delta: -55.4 MB). Peak memory consumption was 555.6 MB. Max. memory is 3.6 GB. [2018-06-22 14:54:50,460 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:54:50,460 INFO ]: ChcToBoogie took 49.74 ms. Allocated memory is still 307.2 MB. Free memory was 261.8 MB in the beginning and 259.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:54:50,461 INFO ]: Boogie Preprocessor took 43.02 ms. Allocated memory is still 307.2 MB. Free memory was 259.8 MB in the beginning and 258.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:54:50,461 INFO ]: RCFGBuilder took 229.60 ms. Allocated memory is still 307.2 MB. Free memory was 258.7 MB in the beginning and 250.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:54:50,461 INFO ]: TraceAbstraction took 61818.30 ms. Allocated memory was 307.2 MB in the beginning and 810.0 MB in the end (delta: 502.8 MB). Free memory was 250.7 MB in the beginning and 317.2 MB in the end (delta: -66.4 MB). Peak memory consumption was 544.5 MB. Max. memory is 3.6 GB. [2018-06-22 14:54:50,465 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 49.74 ms. Allocated memory is still 307.2 MB. Free memory was 261.8 MB in the beginning and 259.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 43.02 ms. Allocated memory is still 307.2 MB. Free memory was 259.8 MB in the beginning and 258.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 229.60 ms. Allocated memory is still 307.2 MB. Free memory was 258.7 MB in the beginning and 250.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 61818.30 ms. Allocated memory was 307.2 MB in the beginning and 810.0 MB in the end (delta: 502.8 MB). Free memory was 250.7 MB in the beginning and 317.2 MB in the end (delta: -66.4 MB). Peak memory consumption was 544.5 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 (29states) and interpolant automaton (currently 3 states, 41 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 241. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 61.7s OverallTime, 9 OverallIterations, 10 TraceHistogramMax, 20.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 108 SDtfs, 309 SDslu, 728 SDs, 0 SdLazy, 630 SolverSat, 384 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 368 GetRequests, 156 SyntacticMatches, 4 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 47.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=8, 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 39.8s InterpolantComputationTime, 457 NumberOfCodeBlocks, 457 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 440 ConstructedInterpolants, 0 QuantifiedInterpolants, 24462292 SizeOfPredicates, 387 NumberOfNonLiveVariables, 1380 ConjunctsInSsa, 409 ConjunctsInUnsatCore, 17 InterpolantComputations, 1 PerfectInterpolantSequences, 276/1020 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/dillig03.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-54-50-474.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dillig03.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-54-50-474.csv Completed graceful shutdown