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/lustre/car_all_e8_856.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 16:07:28,820 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 16:07:28,822 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 16:07:28,838 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 16:07:28,838 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 16:07:28,841 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 16:07:28,843 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 16:07:28,845 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 16:07:28,846 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 16:07:28,848 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 16:07:28,849 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 16:07:28,849 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 16:07:28,850 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 16:07:28,854 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 16:07:28,855 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 16:07:28,855 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 16:07:28,857 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 16:07:28,871 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 16:07:28,873 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 16:07:28,873 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 16:07:28,875 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 16:07:28,877 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 16:07:28,877 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 16:07:28,877 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 16:07:28,878 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 16:07:28,882 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 16:07:28,883 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 16:07:28,883 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 16:07:28,884 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 16:07:28,884 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 16:07:28,891 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 16:07:28,891 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 16:07:28,891 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 16:07:28,892 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 16:07:28,893 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 16:07:28,893 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 16:07:28,906 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 16:07:28,907 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 16:07:28,907 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 16:07:28,907 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 16:07:28,908 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 16:07:28,908 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 16:07:28,909 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 16:07:28,909 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 16:07:28,909 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 16:07:28,909 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 16:07:28,909 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 16:07:28,910 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 16:07:28,910 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 16:07:28,910 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 16:07:28,910 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 16:07:28,910 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 16:07:28,910 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 16:07:28,913 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 16:07:28,913 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 16:07:28,915 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 16:07:28,915 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 16:07:28,963 INFO ]: Repository-Root is: /tmp [2018-06-22 16:07:28,978 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 16:07:28,983 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 16:07:28,985 INFO ]: Initializing SmtParser... [2018-06-22 16:07:28,985 INFO ]: SmtParser initialized [2018-06-22 16:07:28,986 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e8_856.smt2 [2018-06-22 16:07:28,987 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 16:07:29,077 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e8_856.smt2 unknown [2018-06-22 16:07:29,398 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e8_856.smt2 [2018-06-22 16:07:29,402 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 16:07:29,417 INFO ]: Walking toolchain with 4 elements. [2018-06-22 16:07:29,417 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 16:07:29,417 INFO ]: Initializing ChcToBoogie... [2018-06-22 16:07:29,418 INFO ]: ChcToBoogie initialized [2018-06-22 16:07:29,420 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:07:29" (1/1) ... [2018-06-22 16:07:29,511 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:29 Unit [2018-06-22 16:07:29,511 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 16:07:29,521 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 16:07:29,521 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 16:07:29,521 INFO ]: Boogie Preprocessor initialized [2018-06-22 16:07:29,545 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:29" (1/1) ... [2018-06-22 16:07:29,545 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:29" (1/1) ... [2018-06-22 16:07:29,554 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:29" (1/1) ... [2018-06-22 16:07:29,554 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:29" (1/1) ... [2018-06-22 16:07:29,560 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:29" (1/1) ... [2018-06-22 16:07:29,561 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:29" (1/1) ... [2018-06-22 16:07:29,563 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:29" (1/1) ... [2018-06-22 16:07:29,565 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 16:07:29,568 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 16:07:29,568 INFO ]: Initializing RCFGBuilder... [2018-06-22 16:07:29,568 INFO ]: RCFGBuilder initialized [2018-06-22 16:07:29,569 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:29" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 16:07:29,583 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 16:07:29,583 INFO ]: Found specification of procedure False [2018-06-22 16:07:29,583 INFO ]: Found implementation of procedure False [2018-06-22 16:07:29,583 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 16:07:29,583 INFO ]: Found specification of procedure state [2018-06-22 16:07:29,583 INFO ]: Found implementation of procedure state [2018-06-22 16:07:29,583 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 16:07:29,583 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 16:07:29,583 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 16:07:29,893 INFO ]: Using library mode [2018-06-22 16:07:29,894 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:07:29 BoogieIcfgContainer [2018-06-22 16:07:29,894 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 16:07:29,895 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 16:07:29,895 INFO ]: Initializing TraceAbstraction... [2018-06-22 16:07:29,898 INFO ]: TraceAbstraction initialized [2018-06-22 16:07:29,898 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:07:29" (1/3) ... [2018-06-22 16:07:29,899 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9f4acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:07:29, skipping insertion in model container [2018-06-22 16:07:29,899 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:29" (2/3) ... [2018-06-22 16:07:29,899 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9f4acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:07:29, skipping insertion in model container [2018-06-22 16:07:29,899 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:07:29" (3/3) ... [2018-06-22 16:07:29,901 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 16:07:29,910 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 16:07:29,917 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 16:07:29,958 INFO ]: Using default assertion order modulation [2018-06-22 16:07:29,959 INFO ]: Interprodecural is true [2018-06-22 16:07:29,959 INFO ]: Hoare is false [2018-06-22 16:07:29,959 INFO ]: Compute interpolants for FPandBP [2018-06-22 16:07:29,959 INFO ]: Backedges is TWOTRACK [2018-06-22 16:07:29,959 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 16:07:29,959 INFO ]: Difference is false [2018-06-22 16:07:29,959 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 16:07:29,959 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 16:07:29,974 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 16:07:29,985 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 16:07:29,985 INFO ]: Found error trace [2018-06-22 16:07:29,985 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:07:29,986 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:07:29,990 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 16:07:29,991 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:07:29,991 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:07:30,022 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:30,022 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:07:30,022 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:30,089 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:30,351 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 16:07:30,353 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 16:07:30,354 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 16:07:30,355 INFO ]: Interpolant automaton has 4 states [2018-06-22 16:07:30,366 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 16:07:30,366 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 16:07:30,368 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 16:07:30,484 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:07:30,485 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 16:07:30,486 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 16:07:30,487 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 16:07:30,488 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:07:30,505 INFO ]: With dead ends: 13 [2018-06-22 16:07:30,505 INFO ]: Without dead ends: 13 [2018-06-22 16:07:30,507 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 16:07:30,520 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 16:07:30,540 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 16:07:30,541 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 16:07:30,542 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 16:07:30,543 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 16:07:30,543 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:07:30,544 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 16:07:30,544 INFO ]: Interpolant automaton has 4 states. [2018-06-22 16:07:30,544 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 16:07:30,545 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 16:07:30,545 INFO ]: Found error trace [2018-06-22 16:07:30,545 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:07:30,546 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:07:30,546 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 16:07:30,547 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:07:30,547 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:07:30,547 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:30,547 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:07:30,547 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:30,661 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:32,030 WARN ]: Spent 1.06 s on a formula simplification. DAG size of input: 111 DAG size of output: 51 [2018-06-22 16:07:32,080 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:07:32,080 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:07:32,080 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 16:07:32,088 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:07:32,145 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:32,155 INFO ]: Computing forward predicates... [2018-06-22 16:07:33,140 WARN ]: Spent 459.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2018-06-22 16:07:33,335 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:07:33,368 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:07:33,368 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 16:07:33,368 INFO ]: Interpolant automaton has 9 states [2018-06-22 16:07:33,368 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 16:07:33,369 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-22 16:07:33,369 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 16:07:33,644 WARN ]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2018-06-22 16:07:33,810 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 43 [2018-06-22 16:07:33,844 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:07:33,844 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 16:07:33,844 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 16:07:33,844 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 16:07:33,845 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:07:33,845 INFO ]: With dead ends: 15 [2018-06-22 16:07:33,845 INFO ]: Without dead ends: 15 [2018-06-22 16:07:33,846 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-06-22 16:07:33,846 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 16:07:33,849 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 16:07:33,849 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 16:07:33,850 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 16:07:33,850 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 16:07:33,850 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:07:33,850 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 16:07:33,850 INFO ]: Interpolant automaton has 9 states. [2018-06-22 16:07:33,850 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 16:07:33,850 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 16:07:33,850 INFO ]: Found error trace [2018-06-22 16:07:33,850 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:07:33,851 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:07:33,851 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 16:07:33,851 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:07:33,851 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:07:33,851 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:33,851 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:07:33,851 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:33,914 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:34,647 WARN ]: Spent 471.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2018-06-22 16:07:34,854 WARN ]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2018-06-22 16:07:35,080 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2018-06-22 16:07:35,112 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:07:35,112 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:07:35,112 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 16:07:35,126 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 16:07:35,196 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 16:07:35,196 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:35,202 INFO ]: Computing forward predicates... [2018-06-22 16:07:35,395 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:07:35,451 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:07:35,496 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:07:35,521 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:07:35,554 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:07:37,851 WARN ]: Spent 447.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 26 [2018-06-22 16:07:37,979 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:07:37,988 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:07:37,989 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:07:37,989 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:07:37,990 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:07:37,991 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:07:37,992 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:07:37,999 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:07:38,006 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:07:40,324 WARN ]: Spent 698.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 53 [2018-06-22 16:07:40,842 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:07:40,866 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:07:40,866 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 16:07:40,866 INFO ]: Interpolant automaton has 13 states [2018-06-22 16:07:40,866 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 16:07:40,867 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-22 16:07:40,867 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 16:07:41,884 WARN ]: Spent 931.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 175 [2018-06-22 16:07:42,313 WARN ]: Spent 380.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 93 [2018-06-22 16:07:43,031 WARN ]: Spent 602.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 111 [2018-06-22 16:07:43,102 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:07:43,102 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 16:07:43,103 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 16:07:43,103 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 16:07:43,103 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:07:43,103 INFO ]: With dead ends: 17 [2018-06-22 16:07:43,103 INFO ]: Without dead ends: 17 [2018-06-22 16:07:43,104 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-06-22 16:07:43,104 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 16:07:43,106 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 16:07:43,107 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 16:07:43,107 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 16:07:43,107 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 16:07:43,107 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:07:43,107 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 16:07:43,107 INFO ]: Interpolant automaton has 13 states. [2018-06-22 16:07:43,107 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 16:07:43,108 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 16:07:43,108 INFO ]: Found error trace [2018-06-22 16:07:43,108 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:07:43,108 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:07:43,108 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 16:07:43,108 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:07:43,108 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:07:43,109 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:43,109 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:07:43,109 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:43,161 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:43,997 WARN ]: Spent 507.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 98 [2018-06-22 16:07:44,505 WARN ]: Spent 429.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 81 [2018-06-22 16:07:44,927 WARN ]: Spent 397.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 74 [2018-06-22 16:07:45,243 WARN ]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2018-06-22 16:07:45,513 WARN ]: Spent 249.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2018-06-22 16:07:45,608 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 16:07:45,608 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:07:45,608 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 16:07:45,614 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 16:07:45,709 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 16:07:45,709 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:45,714 INFO ]: Computing forward predicates... [2018-06-22 16:07:46,458 WARN ]: Spent 275.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 34 [2018-06-22 16:07:49,731 WARN ]: Spent 261.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2018-06-22 16:07:51,663 WARN ]: Spent 448.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 46 [2018-06-22 16:07:52,605 WARN ]: Spent 177.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2018-06-22 16:07:52,647 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 16:07:52,683 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:07:52,683 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 16:07:52,683 INFO ]: Interpolant automaton has 17 states [2018-06-22 16:07:52,683 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 16:07:52,683 INFO ]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2018-06-22 16:07:52,683 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 16:07:54,066 WARN ]: Spent 1.25 s on a formula simplification. DAG size of input: 207 DAG size of output: 174 [2018-06-22 16:07:54,673 WARN ]: Spent 549.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 106 [2018-06-22 16:07:55,649 WARN ]: Spent 924.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 138 [2018-06-22 16:07:56,384 WARN ]: Spent 640.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 125 [2018-06-22 16:07:56,446 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:07:56,446 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 16:07:56,449 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 16:07:56,449 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 16:07:56,449 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:07:56,449 INFO ]: With dead ends: 19 [2018-06-22 16:07:56,449 INFO ]: Without dead ends: 19 [2018-06-22 16:07:56,450 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2018-06-22 16:07:56,450 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 16:07:56,452 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 16:07:56,452 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 16:07:56,453 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 16:07:56,453 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 16:07:56,453 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:07:56,453 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 16:07:56,453 INFO ]: Interpolant automaton has 17 states. [2018-06-22 16:07:56,453 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 16:07:56,454 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 16:07:56,454 INFO ]: Found error trace [2018-06-22 16:07:56,454 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:07:56,454 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:07:56,454 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 16:07:56,454 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:07:56,454 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:07:56,455 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:56,455 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:07:56,455 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:56,519 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:58,528 WARN ]: Spent 1.68 s on a formula simplification. DAG size of input: 111 DAG size of output: 71 [2018-06-22 16:07:58,753 WARN ]: Spent 190.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2018-06-22 16:07:59,073 WARN ]: Spent 253.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 70 [2018-06-22 16:07:59,538 WARN ]: Spent 321.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2018-06-22 16:07:59,847 WARN ]: Spent 210.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 52 [2018-06-22 16:08:00,182 WARN ]: Spent 305.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2018-06-22 16:08:00,253 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 16:08:00,253 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:08:00,253 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 16:08:00,259 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 16:08:00,344 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 16:08:00,345 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:00,353 INFO ]: Computing forward predicates... [2018-06-22 16:08:00,496 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:08:00,513 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:08:02,041 WARN ]: Spent 441.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 30 [2018-06-22 16:08:02,057 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 16:08:02,886 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:08:02,907 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:08:02,938 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:08:03,240 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:08:03,267 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:08:03,549 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 16:08:04,331 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:08:05,804 WARN ]: Spent 320.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 39 [2018-06-22 16:08:06,349 WARN ]: Spent 358.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 45 [2018-06-22 16:08:06,552 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33 [2018-06-22 16:08:07,469 WARN ]: Spent 197.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 22 [2018-06-22 16:08:07,638 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2018-06-22 16:08:07,680 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 16:08:07,699 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:08:07,699 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-22 16:08:07,700 INFO ]: Interpolant automaton has 21 states [2018-06-22 16:08:07,700 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 16:08:07,700 INFO ]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2018-06-22 16:08:07,700 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-22 16:08:09,131 WARN ]: Spent 1.33 s on a formula simplification. DAG size of input: 251 DAG size of output: 191 [2018-06-22 16:08:09,851 WARN ]: Spent 643.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 101 [2018-06-22 16:08:10,975 WARN ]: Spent 1.06 s on a formula simplification. DAG size of input: 339 DAG size of output: 146 [2018-06-22 16:08:12,384 WARN ]: Spent 1.32 s on a formula simplification. DAG size of input: 312 DAG size of output: 172 [2018-06-22 16:08:13,190 WARN ]: Spent 714.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 149 [2018-06-22 16:08:13,268 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:08:13,268 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 16:08:13,268 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 16:08:13,268 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-22 16:08:13,268 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:08:13,269 INFO ]: With dead ends: 21 [2018-06-22 16:08:13,269 INFO ]: Without dead ends: 21 [2018-06-22 16:08:13,270 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2018-06-22 16:08:13,270 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 16:08:13,272 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 16:08:13,272 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 16:08:13,273 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 16:08:13,273 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 16:08:13,273 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:08:13,273 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 16:08:13,273 INFO ]: Interpolant automaton has 21 states. [2018-06-22 16:08:13,273 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 16:08:13,274 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 16:08:13,274 INFO ]: Found error trace [2018-06-22 16:08:13,274 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:08:13,274 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:08:13,274 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 16:08:13,274 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:08:13,274 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:08:13,275 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:13,275 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:08:13,275 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:13,424 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:15,152 WARN ]: Spent 1.24 s on a formula simplification. DAG size of input: 219 DAG size of output: 95 [2018-06-22 16:08:15,969 WARN ]: Spent 800.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 94 [2018-06-22 16:08:16,523 WARN ]: Spent 527.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 97 [2018-06-22 16:08:17,028 WARN ]: Spent 467.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 89 [2018-06-22 16:08:17,296 WARN ]: Spent 242.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 72 [2018-06-22 16:08:17,596 WARN ]: Spent 201.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 41 [2018-06-22 16:08:18,221 WARN ]: Spent 578.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 70 [2018-06-22 16:08:18,664 WARN ]: Spent 396.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 68 [2018-06-22 16:08:19,263 WARN ]: Spent 546.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 73 [2018-06-22 16:08:19,383 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 16:08:19,383 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:08:19,383 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 16:08:19,391 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 16:08:19,505 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 16:08:19,505 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:19,513 INFO ]: Computing forward predicates... [2018-06-22 16:08:19,717 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:08:21,106 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:08:24,183 WARN ]: Spent 139.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 29 [2018-06-22 16:08:25,187 WARN ]: Spent 697.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 57 Received shutdown request... [2018-06-22 16:08:30,090 WARN ]: Removed 113 from assertion stack [2018-06-22 16:08:30,090 INFO ]: Timeout while computing interpolants [2018-06-22 16:08:30,291 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 16:08:30,291 WARN ]: Verification canceled [2018-06-22 16:08:30,294 WARN ]: Timeout [2018-06-22 16:08:30,295 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:08:30 BoogieIcfgContainer [2018-06-22 16:08:30,295 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 16:08:30,295 INFO ]: Toolchain (without parser) took 60892.63 ms. Allocated memory was 302.5 MB in the beginning and 1.0 GB in the end (delta: 725.6 MB). Free memory was 250.9 MB in the beginning and 236.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 806.8 MB. Max. memory is 3.6 GB. [2018-06-22 16:08:30,296 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 302.5 MB. Free memory is still 267.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 16:08:30,296 INFO ]: ChcToBoogie took 94.09 ms. Allocated memory is still 302.5 MB. Free memory was 250.9 MB in the beginning and 248.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:08:30,297 INFO ]: Boogie Preprocessor took 44.50 ms. Allocated memory is still 302.5 MB. Free memory was 248.9 MB in the beginning and 246.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:08:30,297 INFO ]: RCFGBuilder took 325.68 ms. Allocated memory is still 302.5 MB. Free memory was 246.9 MB in the beginning and 231.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:08:30,297 INFO ]: TraceAbstraction took 60399.70 ms. Allocated memory was 302.5 MB in the beginning and 1.0 GB in the end (delta: 725.6 MB). Free memory was 231.0 MB in the beginning and 236.8 MB in the end (delta: -5.9 MB). Peak memory consumption was 786.8 MB. Max. memory is 3.6 GB. [2018-06-22 16:08:30,304 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 302.5 MB. Free memory is still 267.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 94.09 ms. Allocated memory is still 302.5 MB. Free memory was 250.9 MB in the beginning and 248.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 44.50 ms. Allocated memory is still 302.5 MB. Free memory was 248.9 MB in the beginning and 246.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 325.68 ms. Allocated memory is still 302.5 MB. Free memory was 246.9 MB in the beginning and 231.0 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60399.70 ms. Allocated memory was 302.5 MB in the beginning and 1.0 GB in the end (delta: 725.6 MB). Free memory was 231.0 MB in the beginning and 236.8 MB in the end (delta: -5.9 MB). Peak memory consumption was 786.8 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 analyzing trace of length 30 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 430. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 60.3s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 12.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 81 SDslu, 337 SDs, 0 SdLazy, 262 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 25.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 30.1s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 124268 SizeOfPredicates, 229 NumberOfNonLiveVariables, 1684 ConjunctsInSsa, 424 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 40/140 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/car_all_e8_856.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_16-08-30-314.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_all_e8_856.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_16-08-30-314.csv Completed graceful shutdown