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/swim.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:42:56,939 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:42:56,943 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:42:56,955 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:42:56,956 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:42:56,956 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:42:56,957 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:42:56,961 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:42:56,962 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:42:56,963 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:42:56,965 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:42:56,966 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:42:56,966 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:42:56,967 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:42:56,968 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:42:56,971 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:42:56,972 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:42:56,985 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:42:56,986 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:42:56,987 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:42:56,988 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:42:56,990 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:42:56,991 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:42:56,991 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:42:56,992 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:42:56,992 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:42:56,993 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:42:57,001 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:42:57,002 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:42:57,003 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:42:57,003 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:42:57,004 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:42:57,004 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:42:57,005 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:42:57,005 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:42:57,005 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 15:42:57,018 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:42:57,018 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:42:57,019 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:42:57,019 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:42:57,020 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:42:57,020 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:42:57,020 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:42:57,020 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:42:57,020 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:42:57,021 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:42:57,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:42:57,021 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:42:57,021 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:42:57,021 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:42:57,022 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:42:57,022 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:42:57,022 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:42:57,022 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:42:57,022 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:42:57,023 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:42:57,024 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:42:57,059 INFO ]: Repository-Root is: /tmp [2018-06-22 15:42:57,076 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:42:57,080 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:42:57,081 INFO ]: Initializing SmtParser... [2018-06-22 15:42:57,081 INFO ]: SmtParser initialized [2018-06-22 15:42:57,082 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/swim.c.smt2 [2018-06-22 15:42:57,083 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 15:42:57,163 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/swim.c.smt2 unknown [2018-06-22 15:42:57,729 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/swim.c.smt2 [2018-06-22 15:42:57,733 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:42:57,738 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:42:57,739 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:42:57,739 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:42:57,739 INFO ]: ChcToBoogie initialized [2018-06-22 15:42:57,742 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:42:57" (1/1) ... [2018-06-22 15:42:57,796 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:42:57 Unit [2018-06-22 15:42:57,796 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:42:57,796 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:42:57,796 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:42:57,796 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:42:57,818 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:42:57" (1/1) ... [2018-06-22 15:42:57,819 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:42:57" (1/1) ... [2018-06-22 15:42:57,843 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:42:57" (1/1) ... [2018-06-22 15:42:57,844 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:42:57" (1/1) ... [2018-06-22 15:42:57,871 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:42:57" (1/1) ... [2018-06-22 15:42:57,872 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:42:57" (1/1) ... [2018-06-22 15:42:57,876 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:42:57" (1/1) ... [2018-06-22 15:42:57,889 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:42:57,890 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:42:57,890 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:42:57,890 INFO ]: RCFGBuilder initialized [2018-06-22 15:42:57,891 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:42:57" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 15:42:57,902 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:42:57,902 INFO ]: Found specification of procedure False [2018-06-22 15:42:57,902 INFO ]: Found implementation of procedure False [2018-06-22 15:42:57,902 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:42:57,902 INFO ]: Found specification of procedure state [2018-06-22 15:42:57,902 INFO ]: Found implementation of procedure state [2018-06-22 15:42:57,902 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:42:57,902 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:42:57,902 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:42:58,321 INFO ]: Using library mode [2018-06-22 15:42:58,321 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:42:58 BoogieIcfgContainer [2018-06-22 15:42:58,322 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:42:58,325 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:42:58,325 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:42:58,331 INFO ]: TraceAbstraction initialized [2018-06-22 15:42:58,332 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:42:57" (1/3) ... [2018-06-22 15:42:58,333 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17041780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:42:58, skipping insertion in model container [2018-06-22 15:42:58,333 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:42:57" (2/3) ... [2018-06-22 15:42:58,333 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17041780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:42:58, skipping insertion in model container [2018-06-22 15:42:58,333 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:42:58" (3/3) ... [2018-06-22 15:42:58,336 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:42:58,345 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:42:58,355 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:42:58,400 INFO ]: Using default assertion order modulation [2018-06-22 15:42:58,401 INFO ]: Interprodecural is true [2018-06-22 15:42:58,401 INFO ]: Hoare is false [2018-06-22 15:42:58,401 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:42:58,401 INFO ]: Backedges is TWOTRACK [2018-06-22 15:42:58,401 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:42:58,401 INFO ]: Difference is false [2018-06-22 15:42:58,401 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:42:58,401 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:42:58,422 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:42:58,437 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:42:58,437 INFO ]: Found error trace [2018-06-22 15:42:58,438 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:42:58,439 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:42:58,444 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 15:42:58,446 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:42:58,447 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:42:58,485 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:42:58,485 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:42:58,485 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:42:58,518 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:42:58,637 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:42:58,639 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:42:58,639 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:42:58,641 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:42:58,653 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:42:58,653 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:42:58,655 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:42:58,804 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:42:58,804 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:42:58,804 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:42:58,805 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:42:58,805 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:42:58,815 INFO ]: With dead ends: 13 [2018-06-22 15:42:58,815 INFO ]: Without dead ends: 13 [2018-06-22 15:42:58,817 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 15:42:58,834 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:42:58,864 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:42:58,865 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:42:58,866 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:42:58,867 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:42:58,867 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:42:58,867 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:42:58,867 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:42:58,867 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:42:58,868 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:42:58,868 INFO ]: Found error trace [2018-06-22 15:42:58,868 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:42:58,868 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:42:58,868 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 15:42:58,868 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:42:58,868 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:42:58,869 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:42:58,869 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:42:58,869 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:42:59,017 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:42:59,289 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:42:59,289 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:42:59,289 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 15:42:59,307 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:42:59,393 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:42:59,404 INFO ]: Computing forward predicates... [2018-06-22 15:43:00,169 WARN ]: Spent 630.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 12 [2018-06-22 15:43:00,771 WARN ]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 15:43:00,790 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:43:00,823 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:43:00,823 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 15:43:00,824 INFO ]: Interpolant automaton has 9 states [2018-06-22 15:43:00,824 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 15:43:00,824 INFO ]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-06-22 15:43:00,824 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 15:43:00,991 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:43:00,992 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:43:00,992 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:43:00,992 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 15:43:00,992 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:43:00,993 INFO ]: With dead ends: 15 [2018-06-22 15:43:00,993 INFO ]: Without dead ends: 15 [2018-06-22 15:43:00,994 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-06-22 15:43:00,994 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:43:00,996 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:43:00,996 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:43:00,997 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:43:00,997 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:43:00,997 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:43:00,997 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:43:00,997 INFO ]: Interpolant automaton has 9 states. [2018-06-22 15:43:00,997 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:43:00,997 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:43:00,997 INFO ]: Found error trace [2018-06-22 15:43:00,998 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:43:00,998 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:43:00,998 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 15:43:00,998 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:43:00,998 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:43:00,999 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:00,999 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:43:00,999 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:01,081 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:01,529 WARN ]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 15:43:01,987 WARN ]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-06-22 15:43:02,272 WARN ]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-22 15:43:02,472 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:43:02,473 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:43:02,473 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 15:43:02,481 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:43:02,592 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:43:02,592 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:02,597 INFO ]: Computing forward predicates... [2018-06-22 15:43:02,738 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 12 [2018-06-22 15:43:02,976 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:43:02,995 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:43:02,995 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-22 15:43:02,995 INFO ]: Interpolant automaton has 11 states [2018-06-22 15:43:02,996 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 15:43:02,996 INFO ]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-22 15:43:02,996 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-22 15:43:03,197 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:43:03,197 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:43:03,197 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:43:03,197 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 15:43:03,197 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:43:03,198 INFO ]: With dead ends: 17 [2018-06-22 15:43:03,198 INFO ]: Without dead ends: 17 [2018-06-22 15:43:03,198 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2018-06-22 15:43:03,199 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:43:03,201 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:43:03,201 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:43:03,202 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:43:03,202 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:43:03,202 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:43:03,202 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:43:03,202 INFO ]: Interpolant automaton has 11 states. [2018-06-22 15:43:03,202 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:43:03,203 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:43:03,203 INFO ]: Found error trace [2018-06-22 15:43:03,203 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:43:03,203 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:43:03,203 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 15:43:03,203 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:43:03,203 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:43:03,204 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:03,204 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:43:03,204 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:03,275 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:03,670 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:43:03,671 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:43:03,671 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) [2018-06-22 15:43:03,687 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:43:03,789 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:43:03,789 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:03,794 INFO ]: Computing forward predicates... [2018-06-22 15:43:03,926 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:43:03,946 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:43:03,950 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2018-06-22 15:43:03,950 INFO ]: Interpolant automaton has 12 states [2018-06-22 15:43:03,950 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 15:43:03,950 INFO ]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:43:03,950 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 12 states. [2018-06-22 15:43:04,275 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:43:04,275 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 15:43:04,275 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 15:43:04,275 INFO ]: Start accepts. Automaton has 12 states. Word has length 21 [2018-06-22 15:43:04,275 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:43:04,276 INFO ]: With dead ends: 19 [2018-06-22 15:43:04,276 INFO ]: Without dead ends: 19 [2018-06-22 15:43:04,276 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:43:04,276 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 15:43:04,279 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 15:43:04,279 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 15:43:04,280 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 15:43:04,280 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 15:43:04,280 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:43:04,280 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 15:43:04,280 INFO ]: Interpolant automaton has 12 states. [2018-06-22 15:43:04,280 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 15:43:04,281 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 15:43:04,281 INFO ]: Found error trace [2018-06-22 15:43:04,281 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:43:04,281 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:43:04,281 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 15:43:04,281 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:43:04,281 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:43:04,282 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:04,282 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:43:04,282 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:04,360 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:04,757 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:43:04,757 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:43:04,757 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 15:43:04,764 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 15:43:04,885 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 15:43:04,885 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:04,891 INFO ]: Computing forward predicates... [2018-06-22 15:43:05,112 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:43:05,131 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:43:05,131 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2018-06-22 15:43:05,132 INFO ]: Interpolant automaton has 14 states [2018-06-22 15:43:05,132 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 15:43:05,132 INFO ]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-06-22 15:43:05,132 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 14 states. [2018-06-22 15:43:05,564 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:43:05,564 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 15:43:05,565 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 15:43:05,565 INFO ]: Start accepts. Automaton has 14 states. Word has length 25 [2018-06-22 15:43:05,566 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:43:05,566 INFO ]: With dead ends: 21 [2018-06-22 15:43:05,566 INFO ]: Without dead ends: 21 [2018-06-22 15:43:05,567 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2018-06-22 15:43:05,567 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 15:43:05,569 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 15:43:05,570 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 15:43:05,570 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 15:43:05,570 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 15:43:05,570 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:43:05,570 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 15:43:05,570 INFO ]: Interpolant automaton has 14 states. [2018-06-22 15:43:05,571 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 15:43:05,571 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 15:43:05,571 INFO ]: Found error trace [2018-06-22 15:43:05,571 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:43:05,571 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:43:05,572 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 15:43:05,572 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:43:05,572 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:43:05,572 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:05,572 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:43:05,572 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:05,678 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:06,102 WARN ]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 15:43:06,550 WARN ]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-06-22 15:43:06,936 WARN ]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-06-22 15:43:07,059 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:43:07,060 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:43:07,060 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 15:43:07,073 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 15:43:07,241 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 15:43:07,241 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:07,249 INFO ]: Computing forward predicates... [2018-06-22 15:43:07,457 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:43:07,477 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:43:07,477 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 16 [2018-06-22 15:43:07,477 INFO ]: Interpolant automaton has 16 states [2018-06-22 15:43:07,478 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 15:43:07,478 INFO ]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:43:07,478 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 16 states. [2018-06-22 15:43:08,056 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:43:08,056 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 15:43:08,056 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 15:43:08,057 INFO ]: Start accepts. Automaton has 16 states. Word has length 29 [2018-06-22 15:43:08,057 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:43:08,057 INFO ]: With dead ends: 23 [2018-06-22 15:43:08,057 INFO ]: Without dead ends: 23 [2018-06-22 15:43:08,058 INFO ]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2018-06-22 15:43:08,058 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 15:43:08,061 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 15:43:08,061 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 15:43:08,062 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 15:43:08,062 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-22 15:43:08,062 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:43:08,062 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 15:43:08,062 INFO ]: Interpolant automaton has 16 states. [2018-06-22 15:43:08,062 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 15:43:08,063 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 15:43:08,063 INFO ]: Found error trace [2018-06-22 15:43:08,063 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:43:08,063 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:43:08,063 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 6 times [2018-06-22 15:43:08,063 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:43:08,063 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:43:08,064 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:08,064 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:43:08,064 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:08,163 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:08,671 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 15:43:08,672 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:43:08,672 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 15:43:08,677 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 15:43:08,883 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-22 15:43:08,883 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:08,891 INFO ]: Computing forward predicates... [2018-06-22 15:43:09,662 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 15:43:09,790 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:43:09,790 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2018-06-22 15:43:09,790 INFO ]: Interpolant automaton has 19 states [2018-06-22 15:43:09,790 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 15:43:09,790 INFO ]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-06-22 15:43:09,791 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 19 states. [2018-06-22 15:43:10,892 WARN ]: Spent 537.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2018-06-22 15:43:11,123 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 24 [2018-06-22 15:43:11,542 WARN ]: Spent 119.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2018-06-22 15:43:11,729 WARN ]: Spent 166.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2018-06-22 15:43:11,753 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:43:11,753 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 15:43:11,753 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 15:43:11,753 INFO ]: Start accepts. Automaton has 19 states. Word has length 33 [2018-06-22 15:43:11,754 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:43:11,754 INFO ]: With dead ends: 25 [2018-06-22 15:43:11,754 INFO ]: Without dead ends: 25 [2018-06-22 15:43:11,755 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2018-06-22 15:43:11,755 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 15:43:11,758 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 15:43:11,758 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 15:43:11,759 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 15:43:11,759 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 33 [2018-06-22 15:43:11,759 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:43:11,759 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 15:43:11,759 INFO ]: Interpolant automaton has 19 states. [2018-06-22 15:43:11,759 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 15:43:11,760 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 15:43:11,760 INFO ]: Found error trace [2018-06-22 15:43:11,760 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:43:11,760 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:43:11,760 INFO ]: Analyzing trace with hash -1494134477, now seen corresponding path program 7 times [2018-06-22 15:43:11,760 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:43:11,760 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:43:11,761 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:11,761 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:43:11,761 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:11,871 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:12,404 WARN ]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-06-22 15:43:12,711 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 15:43:12,711 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:43:12,711 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) [2018-06-22 15:43:12,726 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:43:12,954 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:12,965 INFO ]: Computing forward predicates... [2018-06-22 15:43:13,298 WARN ]: Spent 171.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2018-06-22 15:43:13,859 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 15:43:13,879 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:43:13,880 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 21 [2018-06-22 15:43:13,880 INFO ]: Interpolant automaton has 21 states [2018-06-22 15:43:13,880 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 15:43:13,880 INFO ]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2018-06-22 15:43:13,880 INFO ]: Start difference. First operand 25 states and 26 transitions. Second operand 21 states. [2018-06-22 15:43:14,568 WARN ]: Spent 598.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2018-06-22 15:43:14,752 WARN ]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 27 [2018-06-22 15:43:14,934 WARN ]: Spent 158.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 26 [2018-06-22 15:43:15,084 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2018-06-22 15:43:15,309 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 26 [2018-06-22 15:43:15,464 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 28 [2018-06-22 15:43:15,669 WARN ]: Spent 180.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2018-06-22 15:43:15,980 WARN ]: Spent 255.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2018-06-22 15:43:16,186 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:43:16,186 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-22 15:43:16,187 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 15:43:16,187 INFO ]: Start accepts. Automaton has 21 states. Word has length 37 [2018-06-22 15:43:16,188 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:43:16,188 INFO ]: With dead ends: 27 [2018-06-22 15:43:16,188 INFO ]: Without dead ends: 27 [2018-06-22 15:43:16,189 INFO ]: 0 DeclaredPredicates, 63 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=160, Invalid=710, Unknown=0, NotChecked=0, Total=870 [2018-06-22 15:43:16,189 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 15:43:16,192 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 15:43:16,192 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 15:43:16,193 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-22 15:43:16,193 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 37 [2018-06-22 15:43:16,193 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:43:16,193 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-22 15:43:16,193 INFO ]: Interpolant automaton has 21 states. [2018-06-22 15:43:16,193 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-22 15:43:16,194 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 15:43:16,194 INFO ]: Found error trace [2018-06-22 15:43:16,194 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:43:16,194 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:43:16,195 INFO ]: Analyzing trace with hash 1618126293, now seen corresponding path program 8 times [2018-06-22 15:43:16,195 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:43:16,195 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:43:16,195 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:16,195 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:43:16,195 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:16,323 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:17,095 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 15:43:17,095 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:43:17,095 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 15:43:17,102 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:43:17,342 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:43:17,343 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:17,353 INFO ]: Computing forward predicates... [2018-06-22 15:43:17,998 WARN ]: Spent 241.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2018-06-22 15:43:18,491 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 15:43:18,511 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:43:18,511 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 23 [2018-06-22 15:43:18,512 INFO ]: Interpolant automaton has 23 states [2018-06-22 15:43:18,512 INFO ]: Constructing interpolant automaton starting with 23 interpolants. [2018-06-22 15:43:18,512 INFO ]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2018-06-22 15:43:18,512 INFO ]: Start difference. First operand 27 states and 28 transitions. Second operand 23 states. [2018-06-22 15:43:18,775 WARN ]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-06-22 15:43:19,005 WARN ]: Spent 195.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2018-06-22 15:43:19,191 WARN ]: Spent 164.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2018-06-22 15:43:19,434 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 25 [2018-06-22 15:43:19,621 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2018-06-22 15:43:19,802 WARN ]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 25 [2018-06-22 15:43:20,048 WARN ]: Spent 214.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2018-06-22 15:43:20,307 WARN ]: Spent 232.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2018-06-22 15:43:20,538 WARN ]: Spent 207.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2018-06-22 15:43:20,576 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:43:20,577 INFO ]: Finished difference Result 29 states and 30 transitions. [2018-06-22 15:43:20,577 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 15:43:20,577 INFO ]: Start accepts. Automaton has 23 states. Word has length 41 [2018-06-22 15:43:20,577 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:43:20,578 INFO ]: With dead ends: 29 [2018-06-22 15:43:20,578 INFO ]: Without dead ends: 29 [2018-06-22 15:43:20,578 INFO ]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2018-06-22 15:43:20,578 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 15:43:20,582 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-22 15:43:20,582 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 15:43:20,582 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-06-22 15:43:20,583 INFO ]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 41 [2018-06-22 15:43:20,583 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:43:20,583 INFO ]: Abstraction has 29 states and 30 transitions. [2018-06-22 15:43:20,583 INFO ]: Interpolant automaton has 23 states. [2018-06-22 15:43:20,583 INFO ]: Start isEmpty. Operand 29 states and 30 transitions. [2018-06-22 15:43:20,584 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 15:43:20,584 INFO ]: Found error trace [2018-06-22 15:43:20,584 INFO ]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:43:20,584 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:43:20,584 INFO ]: Analyzing trace with hash 996918775, now seen corresponding path program 9 times [2018-06-22 15:43:20,584 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:43:20,584 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:43:20,585 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:20,585 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:43:20,585 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:20,736 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:21,237 WARN ]: Spent 163.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2018-06-22 15:43:21,765 INFO ]: Checked inductivity of 171 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 15:43:21,765 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:43:21,765 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:43:21,771 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 15:43:22,036 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-06-22 15:43:22,036 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:22,053 INFO ]: Computing forward predicates... [2018-06-22 15:43:22,504 WARN ]: Spent 306.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 34 [2018-06-22 15:43:23,134 WARN ]: Spent 319.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2018-06-22 15:43:23,327 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2018-06-22 15:43:23,779 INFO ]: Checked inductivity of 171 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 15:43:23,800 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:43:23,800 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 28 [2018-06-22 15:43:23,800 INFO ]: Interpolant automaton has 28 states [2018-06-22 15:43:23,800 INFO ]: Constructing interpolant automaton starting with 28 interpolants. [2018-06-22 15:43:23,800 INFO ]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2018-06-22 15:43:23,800 INFO ]: Start difference. First operand 29 states and 30 transitions. Second operand 28 states. [2018-06-22 15:43:24,375 WARN ]: Spent 500.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2018-06-22 15:43:24,606 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 28 [2018-06-22 15:43:24,764 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 27 [2018-06-22 15:43:24,972 WARN ]: Spent 175.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 28 [2018-06-22 15:43:25,127 WARN ]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 27 [2018-06-22 15:43:25,294 WARN ]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 25 [2018-06-22 15:43:25,592 WARN ]: Spent 239.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 30 [2018-06-22 15:43:26,117 WARN ]: Spent 480.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2018-06-22 15:43:26,757 WARN ]: Spent 603.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2018-06-22 15:43:27,197 WARN ]: Spent 394.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2018-06-22 15:43:27,234 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:43:27,234 INFO ]: Finished difference Result 31 states and 32 transitions. [2018-06-22 15:43:27,235 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-22 15:43:27,235 INFO ]: Start accepts. Automaton has 28 states. Word has length 45 [2018-06-22 15:43:27,235 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:43:27,237 INFO ]: With dead ends: 31 [2018-06-22 15:43:27,237 INFO ]: Without dead ends: 31 [2018-06-22 15:43:27,237 INFO ]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=255, Invalid=1227, Unknown=0, NotChecked=0, Total=1482 [2018-06-22 15:43:27,237 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-22 15:43:27,242 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-06-22 15:43:27,242 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-22 15:43:27,244 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-06-22 15:43:27,244 INFO ]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 45 [2018-06-22 15:43:27,244 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:43:27,244 INFO ]: Abstraction has 31 states and 32 transitions. [2018-06-22 15:43:27,244 INFO ]: Interpolant automaton has 28 states. [2018-06-22 15:43:27,244 INFO ]: Start isEmpty. Operand 31 states and 32 transitions. [2018-06-22 15:43:27,245 INFO ]: Finished isEmpty. Found accepting run of length 50 [2018-06-22 15:43:27,245 INFO ]: Found error trace [2018-06-22 15:43:27,245 INFO ]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:43:27,245 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:43:27,245 INFO ]: Analyzing trace with hash -570306151, now seen corresponding path program 10 times [2018-06-22 15:43:27,245 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:43:27,245 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:43:27,246 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:27,246 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:43:27,246 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:27,447 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:28,385 WARN ]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-06-22 15:43:28,732 WARN ]: Spent 200.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2018-06-22 15:43:29,388 INFO ]: Checked inductivity of 210 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-06-22 15:43:29,388 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:43:29,388 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:43:29,394 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 15:43:29,732 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 15:43:29,732 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:29,744 INFO ]: Computing forward predicates... [2018-06-22 15:43:30,186 WARN ]: Spent 291.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 32 [2018-06-22 15:43:30,677 WARN ]: Spent 302.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39 [2018-06-22 15:43:31,243 WARN ]: Spent 326.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2018-06-22 15:43:31,816 INFO ]: Checked inductivity of 210 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-06-22 15:43:31,838 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:43:31,838 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 29 [2018-06-22 15:43:31,839 INFO ]: Interpolant automaton has 29 states [2018-06-22 15:43:31,839 INFO ]: Constructing interpolant automaton starting with 29 interpolants. [2018-06-22 15:43:31,839 INFO ]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2018-06-22 15:43:31,839 INFO ]: Start difference. First operand 31 states and 32 transitions. Second operand 29 states. [2018-06-22 15:43:33,041 WARN ]: Spent 1.12 s on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2018-06-22 15:43:33,301 WARN ]: Spent 211.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 33 [2018-06-22 15:43:33,590 WARN ]: Spent 251.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 32 [2018-06-22 15:43:33,815 WARN ]: Spent 180.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 29 [2018-06-22 15:43:34,080 WARN ]: Spent 207.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 32 [2018-06-22 15:43:34,299 WARN ]: Spent 179.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 31 [2018-06-22 15:43:34,576 WARN ]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 35 [2018-06-22 15:43:35,025 WARN ]: Spent 409.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 45 [2018-06-22 15:43:35,424 WARN ]: Spent 356.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 46 [2018-06-22 15:43:35,792 WARN ]: Spent 326.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 45 [2018-06-22 15:43:36,317 WARN ]: Spent 478.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 46 [2018-06-22 15:43:36,364 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:43:36,364 INFO ]: Finished difference Result 33 states and 34 transitions. [2018-06-22 15:43:36,368 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 15:43:36,368 INFO ]: Start accepts. Automaton has 29 states. Word has length 49 [2018-06-22 15:43:36,369 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:43:36,369 INFO ]: With dead ends: 33 [2018-06-22 15:43:36,369 INFO ]: Without dead ends: 33 [2018-06-22 15:43:36,370 INFO ]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=282, Invalid=1358, Unknown=0, NotChecked=0, Total=1640 [2018-06-22 15:43:36,370 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-22 15:43:36,378 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-06-22 15:43:36,379 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-22 15:43:36,379 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-06-22 15:43:36,379 INFO ]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 49 [2018-06-22 15:43:36,380 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:43:36,380 INFO ]: Abstraction has 33 states and 34 transitions. [2018-06-22 15:43:36,380 INFO ]: Interpolant automaton has 29 states. [2018-06-22 15:43:36,380 INFO ]: Start isEmpty. Operand 33 states and 34 transitions. [2018-06-22 15:43:36,381 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-22 15:43:36,381 INFO ]: Found error trace [2018-06-22 15:43:36,381 INFO ]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:43:36,381 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:43:36,381 INFO ]: Analyzing trace with hash 1955719355, now seen corresponding path program 11 times [2018-06-22 15:43:36,381 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:43:36,381 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:43:36,382 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:36,382 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:43:36,382 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:43:36,982 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:39,058 WARN ]: Spent 1.56 s on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2018-06-22 15:43:39,294 WARN ]: Spent 230.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-06-22 15:43:39,430 WARN ]: Spent 126.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-06-22 15:43:39,595 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2018-06-22 15:43:39,720 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-06-22 15:43:40,539 INFO ]: Checked inductivity of 253 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-06-22 15:43:40,540 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:43:40,540 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:43:40,545 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 15:43:40,879 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-06-22 15:43:40,879 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:43:40,894 INFO ]: Computing forward predicates... [2018-06-22 15:43:41,591 WARN ]: Spent 517.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2018-06-22 15:43:42,080 WARN ]: Spent 403.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2018-06-22 15:43:42,679 WARN ]: Spent 535.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2018-06-22 15:43:43,190 WARN ]: Spent 441.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2018-06-22 15:43:43,585 WARN ]: Spent 339.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-06-22 15:43:48,560 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,567 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,574 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,584 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,591 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,595 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,601 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,605 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,611 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,618 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,621 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,624 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,627 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,630 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,633 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,636 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,639 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,641 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,645 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,648 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,651 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,654 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,657 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,660 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,662 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,665 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,668 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,671 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,674 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,677 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,679 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,682 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,684 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,687 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,690 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,692 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,695 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,698 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,700 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,703 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,705 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,708 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,711 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,714 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,717 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,719 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,722 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,724 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,727 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,730 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,733 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,735 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,738 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,741 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,743 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,746 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,748 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,752 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,809 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,812 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,814 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,817 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,819 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,822 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,824 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,827 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,830 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,832 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,835 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,837 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,839 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,842 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,844 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,846 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,849 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,852 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,854 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,857 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,861 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,863 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,865 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,868 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,871 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,874 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,876 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,878 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,884 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,886 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,943 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,945 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,949 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,951 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,953 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,955 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,957 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,959 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,962 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,967 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,969 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,972 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,974 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,977 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,980 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,982 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,984 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,986 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,989 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,991 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,993 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,995 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:48,998 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,000 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,002 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,005 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,007 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,009 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,011 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,013 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,016 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,018 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,020 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,022 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,025 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,027 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,030 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,032 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,034 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,037 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,039 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,042 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,044 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,046 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,049 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,051 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,053 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,055 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,058 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,060 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,062 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,064 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,066 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,069 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,071 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,073 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,076 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,078 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,080 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,082 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,084 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,087 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,089 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,091 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,093 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,095 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,096 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,098 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,099 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,100 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,102 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,103 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,104 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,105 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,107 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,108 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,109 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,111 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,112 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,114 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,115 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,116 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,117 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,119 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,120 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,121 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,123 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,124 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,125 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,126 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,128 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,129 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,130 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,132 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,135 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,137 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,139 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,142 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,144 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,146 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,197 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,199 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,200 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,202 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,203 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,205 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,206 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,208 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,209 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,211 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,212 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,213 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,215 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,216 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,217 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,218 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,219 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,221 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,222 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,223 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,224 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,225 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,227 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,228 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,229 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,231 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,233 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,235 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,236 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,237 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,238 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,240 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,241 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,242 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,243 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,245 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,246 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,247 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,249 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,250 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,251 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,252 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,254 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,255 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,256 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,258 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,259 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,262 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,264 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,266 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,268 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,312 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,314 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,315 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,316 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,318 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,319 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,320 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,321 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,323 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:49,324 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 15:43:50,626 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2018-06-22 15:43:54,177 INFO ]: Checked inductivity of 253 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-06-22 15:43:54,241 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:43:54,241 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 46 [2018-06-22 15:43:54,242 INFO ]: Interpolant automaton has 46 states [2018-06-22 15:43:54,242 INFO ]: Constructing interpolant automaton starting with 46 interpolants. [2018-06-22 15:43:54,243 INFO ]: CoverageRelationStatistics Valid=150, Invalid=1920, Unknown=0, NotChecked=0, Total=2070 [2018-06-22 15:43:54,243 INFO ]: Start difference. First operand 33 states and 34 transitions. Second operand 46 states. Received shutdown request... [2018-06-22 15:43:55,201 WARN ]: Removed 13 from assertion stack [2018-06-22 15:43:55,201 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:43:55,201 WARN ]: Verification canceled [2018-06-22 15:43:55,205 WARN ]: Timeout [2018-06-22 15:43:55,205 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:43:55 BoogieIcfgContainer [2018-06-22 15:43:55,205 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:43:55,205 INFO ]: Toolchain (without parser) took 57471.82 ms. Allocated memory was 305.1 MB in the beginning and 1.2 GB in the end (delta: 864.6 MB). Free memory was 232.6 MB in the beginning and 809.5 MB in the end (delta: -576.9 MB). Peak memory consumption was 287.7 MB. Max. memory is 3.6 GB. [2018-06-22 15:43:55,206 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:43:55,206 INFO ]: ChcToBoogie took 57.02 ms. Allocated memory is still 305.1 MB. Free memory was 232.6 MB in the beginning and 229.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:43:55,207 INFO ]: Boogie Preprocessor took 92.91 ms. Allocated memory is still 305.1 MB. Free memory was 229.6 MB in the beginning and 227.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:43:55,207 INFO ]: RCFGBuilder took 431.80 ms. Allocated memory is still 305.1 MB. Free memory was 227.6 MB in the beginning and 201.9 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 3.6 GB. [2018-06-22 15:43:55,208 INFO ]: TraceAbstraction took 56879.58 ms. Allocated memory was 305.1 MB in the beginning and 1.2 GB in the end (delta: 864.6 MB). Free memory was 201.9 MB in the beginning and 809.5 MB in the end (delta: -607.5 MB). Peak memory consumption was 257.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:43:55,210 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 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.02 ms. Allocated memory is still 305.1 MB. Free memory was 232.6 MB in the beginning and 229.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 92.91 ms. Allocated memory is still 305.1 MB. Free memory was 229.6 MB in the beginning and 227.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 431.80 ms. Allocated memory is still 305.1 MB. Free memory was 227.6 MB in the beginning and 201.9 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 3.6 GB. * TraceAbstraction took 56879.58 ms. Allocated memory was 305.1 MB in the beginning and 1.2 GB in the end (delta: 864.6 MB). Free memory was 201.9 MB in the beginning and 809.5 MB in the end (delta: -607.5 MB). Peak memory consumption was 257.0 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was constructing difference of abstraction (33states) and interpolant automaton (currently 4 states, 46 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 167. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 56.8s OverallTime, 12 OverallIterations, 12 TraceHistogramMax, 17.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 170 SDtfs, 544 SDslu, 1143 SDs, 0 SdLazy, 1091 SolverSat, 645 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 600 GetRequests, 314 SyntacticMatches, 10 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 33.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=11, 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, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 3.7s SatisfiabilityAnalysisTime, 34.9s InterpolantComputationTime, 735 NumberOfCodeBlocks, 735 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 712 ConstructedInterpolants, 0 QuantifiedInterpolants, 1372464 SizeOfPredicates, 1680 NumberOfNonLiveVariables, 10395 ConjunctsInSsa, 779 ConjunctsInUnsatCore, 23 InterpolantComputations, 1 PerfectInterpolantSequences, 572/2156 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/swim.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-43-55-220.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/swim.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-43-55-220.csv Completed graceful shutdown