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_e7_578.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 16:07:25,631 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 16:07:25,633 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 16:07:25,646 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 16:07:25,647 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 16:07:25,648 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 16:07:25,649 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 16:07:25,650 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 16:07:25,652 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 16:07:25,653 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 16:07:25,653 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 16:07:25,654 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 16:07:25,655 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 16:07:25,656 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 16:07:25,656 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 16:07:25,657 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 16:07:25,659 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 16:07:25,663 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 16:07:25,664 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 16:07:25,672 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 16:07:25,674 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 16:07:25,676 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 16:07:25,676 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 16:07:25,676 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 16:07:25,684 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 16:07:25,685 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 16:07:25,685 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 16:07:25,686 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 16:07:25,687 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 16:07:25,687 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 16:07:25,688 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 16:07:25,688 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 16:07:25,689 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 16:07:25,689 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 16:07:25,690 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 16:07:25,690 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 16:07:25,703 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 16:07:25,703 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 16:07:25,704 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 16:07:25,704 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 16:07:25,705 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 16:07:25,705 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 16:07:25,705 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 16:07:25,705 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 16:07:25,705 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 16:07:25,706 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 16:07:25,706 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 16:07:25,706 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 16:07:25,706 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 16:07:25,706 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 16:07:25,707 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 16:07:25,707 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 16:07:25,707 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 16:07:25,707 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 16:07:25,707 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 16:07:25,709 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 16:07:25,709 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 16:07:25,742 INFO ]: Repository-Root is: /tmp [2018-06-22 16:07:25,761 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 16:07:25,766 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 16:07:25,767 INFO ]: Initializing SmtParser... [2018-06-22 16:07:25,767 INFO ]: SmtParser initialized [2018-06-22 16:07:25,768 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e8_856_e7_578.smt2 [2018-06-22 16:07:25,770 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 16:07:25,860 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e8_856_e7_578.smt2 unknown [2018-06-22 16:07:26,243 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e8_856_e7_578.smt2 [2018-06-22 16:07:26,247 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 16:07:26,263 INFO ]: Walking toolchain with 4 elements. [2018-06-22 16:07:26,264 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 16:07:26,264 INFO ]: Initializing ChcToBoogie... [2018-06-22 16:07:26,264 INFO ]: ChcToBoogie initialized [2018-06-22 16:07:26,267 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:07:26" (1/1) ... [2018-06-22 16:07:26,349 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:26 Unit [2018-06-22 16:07:26,349 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 16:07:26,349 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 16:07:26,350 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 16:07:26,350 INFO ]: Boogie Preprocessor initialized [2018-06-22 16:07:26,369 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:26" (1/1) ... [2018-06-22 16:07:26,369 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:26" (1/1) ... [2018-06-22 16:07:26,377 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:26" (1/1) ... [2018-06-22 16:07:26,377 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:26" (1/1) ... [2018-06-22 16:07:26,381 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:26" (1/1) ... [2018-06-22 16:07:26,382 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:26" (1/1) ... [2018-06-22 16:07:26,384 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:26" (1/1) ... [2018-06-22 16:07:26,387 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 16:07:26,387 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 16:07:26,388 INFO ]: Initializing RCFGBuilder... [2018-06-22 16:07:26,388 INFO ]: RCFGBuilder initialized [2018-06-22 16:07:26,388 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:26" (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 16:07:26,400 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 16:07:26,400 INFO ]: Found specification of procedure False [2018-06-22 16:07:26,400 INFO ]: Found implementation of procedure False [2018-06-22 16:07:26,400 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 16:07:26,400 INFO ]: Found specification of procedure state [2018-06-22 16:07:26,401 INFO ]: Found implementation of procedure state [2018-06-22 16:07:26,401 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 16:07:26,401 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 16:07:26,401 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 16:07:26,641 INFO ]: Using library mode [2018-06-22 16:07:26,643 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:07:26 BoogieIcfgContainer [2018-06-22 16:07:26,643 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 16:07:26,645 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 16:07:26,645 INFO ]: Initializing TraceAbstraction... [2018-06-22 16:07:26,649 INFO ]: TraceAbstraction initialized [2018-06-22 16:07:26,649 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:07:26" (1/3) ... [2018-06-22 16:07:26,650 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d32dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:07:26, skipping insertion in model container [2018-06-22 16:07:26,650 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:07:26" (2/3) ... [2018-06-22 16:07:26,650 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d32dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:07:26, skipping insertion in model container [2018-06-22 16:07:26,650 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:07:26" (3/3) ... [2018-06-22 16:07:26,652 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 16:07:26,661 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 16:07:26,671 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 16:07:26,707 INFO ]: Using default assertion order modulation [2018-06-22 16:07:26,708 INFO ]: Interprodecural is true [2018-06-22 16:07:26,708 INFO ]: Hoare is false [2018-06-22 16:07:26,708 INFO ]: Compute interpolants for FPandBP [2018-06-22 16:07:26,708 INFO ]: Backedges is TWOTRACK [2018-06-22 16:07:26,708 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 16:07:26,708 INFO ]: Difference is false [2018-06-22 16:07:26,708 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 16:07:26,708 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 16:07:26,727 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 16:07:26,741 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 16:07:26,741 INFO ]: Found error trace [2018-06-22 16:07:26,742 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:07:26,742 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:07:26,748 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 16:07:26,750 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:07:26,750 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:07:26,797 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:26,797 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:07:26,797 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:26,890 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:27,169 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 7 [2018-06-22 16:07:27,172 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 16:07:27,174 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 16:07:27,174 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 16:07:27,175 INFO ]: Interpolant automaton has 4 states [2018-06-22 16:07:27,186 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 16:07:27,186 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 16:07:27,188 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 16:07:27,284 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:07:27,284 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 16:07:27,285 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 16:07:27,287 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 16:07:27,287 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:07:27,300 INFO ]: With dead ends: 13 [2018-06-22 16:07:27,300 INFO ]: Without dead ends: 13 [2018-06-22 16:07:27,301 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 16:07:27,313 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 16:07:27,351 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 16:07:27,353 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 16:07:27,354 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 16:07:27,355 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 16:07:27,355 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:07:27,355 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 16:07:27,355 INFO ]: Interpolant automaton has 4 states. [2018-06-22 16:07:27,355 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 16:07:27,357 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 16:07:27,357 INFO ]: Found error trace [2018-06-22 16:07:27,357 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:07:27,357 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:07:27,357 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 16:07:27,357 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:07:27,357 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:07:27,358 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:27,358 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:07:27,358 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:27,450 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:28,567 WARN ]: Spent 968.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 39 [2018-06-22 16:07:28,794 WARN ]: Spent 115.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 5 [2018-06-22 16:07:28,796 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:07:28,796 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:07:28,796 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 16:07:28,804 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:07:28,870 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:28,878 INFO ]: Computing forward predicates... [2018-06-22 16:07:30,483 WARN ]: Spent 711.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 28 [2018-06-22 16:07:30,651 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:07:30,674 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:07:30,674 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 16:07:30,675 INFO ]: Interpolant automaton has 9 states [2018-06-22 16:07:30,675 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 16:07:30,675 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-22 16:07:30,675 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 16:07:30,838 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-06-22 16:07:31,032 WARN ]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2018-06-22 16:07:31,184 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:07:31,185 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 16:07:31,186 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 16:07:31,186 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 16:07:31,186 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:07:31,187 INFO ]: With dead ends: 15 [2018-06-22 16:07:31,187 INFO ]: Without dead ends: 15 [2018-06-22 16:07:31,188 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-06-22 16:07:31,188 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 16:07:31,190 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 16:07:31,191 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 16:07:31,193 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 16:07:31,193 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 16:07:31,193 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:07:31,193 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 16:07:31,193 INFO ]: Interpolant automaton has 9 states. [2018-06-22 16:07:31,193 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 16:07:31,194 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 16:07:31,194 INFO ]: Found error trace [2018-06-22 16:07:31,194 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:07:31,194 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:07:31,194 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 16:07:31,194 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:07:31,194 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:07:31,195 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:31,195 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:07:31,195 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:31,265 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:32,129 WARN ]: Spent 576.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2018-06-22 16:07:32,315 WARN ]: Spent 166.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2018-06-22 16:07:32,451 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2018-06-22 16:07:32,582 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 5 [2018-06-22 16:07:32,585 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:07:32,585 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:07:32,585 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) [2018-06-22 16:07:32,601 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 16:07:32,675 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 16:07:32,675 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:32,681 INFO ]: Computing forward predicates... [2018-06-22 16:07:33,162 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:07:33,172 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 16:07:33,216 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 16:07:33,408 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:33,423 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:33,435 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:07:36,603 WARN ]: Spent 831.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 58 [2018-06-22 16:07:37,094 WARN ]: Spent 175.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2018-06-22 16:07:37,137 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:07:37,167 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:07:37,167 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 16:07:37,167 INFO ]: Interpolant automaton has 13 states [2018-06-22 16:07:37,167 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 16:07:37,168 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-22 16:07:37,168 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 16:07:38,575 WARN ]: Spent 1.27 s on a formula simplification. DAG size of input: 194 DAG size of output: 176 [2018-06-22 16:07:39,133 WARN ]: Spent 471.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 90 [2018-06-22 16:07:39,921 WARN ]: Spent 722.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 110 [2018-06-22 16:07:40,007 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:07:40,007 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 16:07:40,007 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 16:07:40,007 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 16:07:40,007 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:07:40,008 INFO ]: With dead ends: 17 [2018-06-22 16:07:40,008 INFO ]: Without dead ends: 17 [2018-06-22 16:07:40,008 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-06-22 16:07:40,008 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 16:07:40,011 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 16:07:40,011 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 16:07:40,011 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 16:07:40,012 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 16:07:40,012 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:07:40,012 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 16:07:40,012 INFO ]: Interpolant automaton has 13 states. [2018-06-22 16:07:40,012 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 16:07:40,012 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 16:07:40,012 INFO ]: Found error trace [2018-06-22 16:07:40,012 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:07:40,013 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:07:40,013 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 16:07:40,013 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:07:40,013 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:07:40,013 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:40,013 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:07:40,013 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:07:40,102 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:40,904 WARN ]: Spent 455.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 98 [2018-06-22 16:07:41,443 WARN ]: Spent 447.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 117 [2018-06-22 16:07:41,665 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2018-06-22 16:07:42,204 WARN ]: Spent 294.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-06-22 16:07:42,299 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 16:07:42,299 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:07:42,299 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 16:07:42,306 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 16:07:42,406 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 16:07:42,407 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:07:42,412 INFO ]: Computing forward predicates... [2018-06-22 16:07:43,581 WARN ]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2018-06-22 16:07:43,723 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:07:43,728 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:07:43,729 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:43,732 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:07:43,733 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:43,740 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:43,743 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:07:43,746 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:07:43,749 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:07:52,583 WARN ]: Spent 1.76 s on a formula simplification. DAG size of input: 237 DAG size of output: 65 [2018-06-22 16:07:54,523 WARN ]: Spent 1.06 s on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2018-06-22 16:07:54,998 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 16:07:55,029 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:07:55,029 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 16:07:55,030 INFO ]: Interpolant automaton has 17 states [2018-06-22 16:07:55,030 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 16:07:55,030 INFO ]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2018-06-22 16:07:55,030 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 16:07:56,209 WARN ]: Spent 712.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-06-22 16:07:57,871 WARN ]: Spent 1.61 s on a formula simplification. DAG size of input: 267 DAG size of output: 209 [2018-06-22 16:07:58,732 WARN ]: Spent 784.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 106 [2018-06-22 16:07:59,978 WARN ]: Spent 1.09 s on a formula simplification. DAG size of input: 307 DAG size of output: 147 [2018-06-22 16:08:01,338 WARN ]: Spent 1.26 s on a formula simplification. DAG size of input: 259 DAG size of output: 167 [2018-06-22 16:08:01,428 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:08:01,428 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 16:08:01,431 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 16:08:01,431 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 16:08:01,431 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:08:01,432 INFO ]: With dead ends: 19 [2018-06-22 16:08:01,432 INFO ]: Without dead ends: 19 [2018-06-22 16:08:01,432 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2018-06-22 16:08:01,432 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 16:08:01,435 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 16:08:01,435 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 16:08:01,436 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 16:08:01,436 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 16:08:01,436 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:08:01,436 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 16:08:01,436 INFO ]: Interpolant automaton has 17 states. [2018-06-22 16:08:01,436 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 16:08:01,437 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 16:08:01,437 INFO ]: Found error trace [2018-06-22 16:08:01,437 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:08:01,437 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:08:01,437 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 16:08:01,437 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:08:01,437 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:08:01,438 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:01,438 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:08:01,438 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:01,522 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:03,045 WARN ]: Spent 1.03 s on a formula simplification. DAG size of input: 186 DAG size of output: 119 [2018-06-22 16:08:03,649 WARN ]: Spent 510.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 95 [2018-06-22 16:08:04,287 WARN ]: Spent 524.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 85 [2018-06-22 16:08:04,544 WARN ]: Spent 232.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 89 [2018-06-22 16:08:04,690 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2018-06-22 16:08:04,920 WARN ]: Spent 171.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 44 [2018-06-22 16:08:05,371 WARN ]: Spent 409.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 71 [2018-06-22 16:08:05,487 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 16:08:05,487 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:08:05,487 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 16:08:05,493 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 16:08:05,608 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 16:08:05,609 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:05,619 INFO ]: Computing forward predicates... [2018-06-22 16:08:06,562 WARN ]: Spent 225.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 32 [2018-06-22 16:08:09,538 WARN ]: Spent 1.32 s on a formula simplification. DAG size of input: 235 DAG size of output: 54 [2018-06-22 16:08:11,116 WARN ]: Spent 817.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 52 [2018-06-22 16:08:11,444 WARN ]: Spent 238.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 36 [2018-06-22 16:08:11,859 WARN ]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 30 [2018-06-22 16:08:12,141 WARN ]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2018-06-22 16:08:12,414 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 16:08:12,435 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:08:12,435 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-22 16:08:12,435 INFO ]: Interpolant automaton has 21 states [2018-06-22 16:08:12,435 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 16:08:12,436 INFO ]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2018-06-22 16:08:12,436 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-22 16:08:14,218 WARN ]: Spent 1.64 s on a formula simplification. DAG size of input: 294 DAG size of output: 203 [2018-06-22 16:08:15,179 WARN ]: Spent 883.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 124 [2018-06-22 16:08:16,356 WARN ]: Spent 1.10 s on a formula simplification. DAG size of input: 358 DAG size of output: 153 [2018-06-22 16:08:17,708 WARN ]: Spent 1.26 s on a formula simplification. DAG size of input: 353 DAG size of output: 173 [2018-06-22 16:08:19,158 WARN ]: Spent 1.31 s on a formula simplification. DAG size of input: 294 DAG size of output: 161 [2018-06-22 16:08:19,251 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:08:19,251 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 16:08:19,252 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 16:08:19,252 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-22 16:08:19,252 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:08:19,253 INFO ]: With dead ends: 21 [2018-06-22 16:08:19,253 INFO ]: Without dead ends: 21 [2018-06-22 16:08:19,253 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2018-06-22 16:08:19,253 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 16:08:19,256 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 16:08:19,256 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 16:08:19,257 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 16:08:19,257 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 16:08:19,257 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:08:19,257 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 16:08:19,257 INFO ]: Interpolant automaton has 21 states. [2018-06-22 16:08:19,257 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 16:08:19,258 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 16:08:19,258 INFO ]: Found error trace [2018-06-22 16:08:19,258 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:08:19,258 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:08:19,258 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 16:08:19,258 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:08:19,258 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:08:19,259 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:19,259 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:08:19,259 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:08:19,356 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:08:21,728 WARN ]: Spent 1.89 s on a formula simplification. DAG size of input: 224 DAG size of output: 102 [2018-06-22 16:08:22,080 WARN ]: Spent 337.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 70 [2018-06-22 16:08:22,257 WARN ]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 Received shutdown request... [2018-06-22 16:08:22,349 WARN ]: Removed 2 from assertion stack [2018-06-22 16:08:22,349 WARN ]: Verification canceled [2018-06-22 16:08:22,352 WARN ]: Timeout [2018-06-22 16:08:22,352 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:08:22 BoogieIcfgContainer [2018-06-22 16:08:22,352 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 16:08:22,353 INFO ]: Toolchain (without parser) took 56105.09 ms. Allocated memory was 306.2 MB in the beginning and 1.1 GB in the end (delta: 747.6 MB). Free memory was 254.6 MB in the beginning and 583.3 MB in the end (delta: -328.7 MB). Peak memory consumption was 419.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:08:22,354 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 16:08:22,354 INFO ]: ChcToBoogie took 85.37 ms. Allocated memory is still 306.2 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:08:22,354 INFO ]: Boogie Preprocessor took 37.47 ms. Allocated memory is still 306.2 MB. Free memory was 252.6 MB in the beginning and 250.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 16:08:22,355 INFO ]: RCFGBuilder took 255.68 ms. Allocated memory is still 306.2 MB. Free memory was 250.5 MB in the beginning and 234.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:08:22,355 INFO ]: TraceAbstraction took 55707.47 ms. Allocated memory was 306.2 MB in the beginning and 1.1 GB in the end (delta: 747.6 MB). Free memory was 234.5 MB in the beginning and 583.3 MB in the end (delta: -348.7 MB). Peak memory consumption was 398.9 MB. Max. memory is 3.6 GB. [2018-06-22 16:08:22,358 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 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 85.37 ms. Allocated memory is still 306.2 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.47 ms. Allocated memory is still 306.2 MB. Free memory was 252.6 MB in the beginning and 250.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 255.68 ms. Allocated memory is still 306.2 MB. Free memory was 250.5 MB in the beginning and 234.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 55707.47 ms. Allocated memory was 306.2 MB in the beginning and 1.1 GB in the end (delta: 747.6 MB). Free memory was 234.5 MB in the beginning and 583.3 MB in the end (delta: -348.7 MB). Peak memory consumption was 398.9 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 6, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 119. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 55.6s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 16.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 86 SDslu, 342 SDs, 0 SdLazy, 266 SolverSat, 113 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 33.6s 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 34.7s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 137096 SizeOfPredicates, 218 NumberOfNonLiveVariables, 1684 ConjunctsInSsa, 415 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_e7_578.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_16-08-22-369.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_all_e8_856_e7_578.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_16-08-22-369.csv Completed graceful shutdown