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_e2_142_e7_209.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 16:03:37,641 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 16:03:37,643 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 16:03:37,653 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 16:03:37,654 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 16:03:37,654 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 16:03:37,656 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 16:03:37,657 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 16:03:37,659 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 16:03:37,659 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 16:03:37,660 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 16:03:37,660 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 16:03:37,661 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 16:03:37,664 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 16:03:37,665 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 16:03:37,666 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 16:03:37,667 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 16:03:37,671 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 16:03:37,673 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 16:03:37,674 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 16:03:37,684 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 16:03:37,686 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 16:03:37,686 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 16:03:37,686 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 16:03:37,687 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 16:03:37,688 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 16:03:37,689 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 16:03:37,689 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 16:03:37,690 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 16:03:37,691 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 16:03:37,691 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 16:03:37,692 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 16:03:37,692 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 16:03:37,693 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 16:03:37,697 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 16:03:37,697 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 16:03:37,711 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 16:03:37,711 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 16:03:37,712 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 16:03:37,712 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 16:03:37,713 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 16:03:37,713 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 16:03:37,713 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 16:03:37,713 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 16:03:37,713 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 16:03:37,714 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 16:03:37,714 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 16:03:37,714 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 16:03:37,714 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 16:03:37,714 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 16:03:37,715 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 16:03:37,715 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 16:03:37,715 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 16:03:37,715 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 16:03:37,715 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 16:03:37,717 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 16:03:37,717 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 16:03:37,766 INFO ]: Repository-Root is: /tmp [2018-06-22 16:03:37,781 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 16:03:37,785 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 16:03:37,787 INFO ]: Initializing SmtParser... [2018-06-22 16:03:37,787 INFO ]: SmtParser initialized [2018-06-22 16:03:37,787 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e2_142_e7_209.smt2 [2018-06-22 16:03:37,789 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 16:03:37,879 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e2_142_e7_209.smt2 unknown [2018-06-22 16:03:38,260 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/car_all_e2_142_e7_209.smt2 [2018-06-22 16:03:38,268 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 16:03:38,273 INFO ]: Walking toolchain with 4 elements. [2018-06-22 16:03:38,273 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 16:03:38,273 INFO ]: Initializing ChcToBoogie... [2018-06-22 16:03:38,273 INFO ]: ChcToBoogie initialized [2018-06-22 16:03:38,285 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:03:38" (1/1) ... [2018-06-22 16:03:38,340 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:03:38 Unit [2018-06-22 16:03:38,340 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 16:03:38,340 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 16:03:38,340 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 16:03:38,341 INFO ]: Boogie Preprocessor initialized [2018-06-22 16:03:38,360 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:03:38" (1/1) ... [2018-06-22 16:03:38,360 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:03:38" (1/1) ... [2018-06-22 16:03:38,367 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:03:38" (1/1) ... [2018-06-22 16:03:38,367 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:03:38" (1/1) ... [2018-06-22 16:03:38,375 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:03:38" (1/1) ... [2018-06-22 16:03:38,376 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:03:38" (1/1) ... [2018-06-22 16:03:38,378 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:03:38" (1/1) ... [2018-06-22 16:03:38,380 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 16:03:38,381 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 16:03:38,381 INFO ]: Initializing RCFGBuilder... [2018-06-22 16:03:38,381 INFO ]: RCFGBuilder initialized [2018-06-22 16:03:38,382 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:03:38" (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 16:03:38,395 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 16:03:38,395 INFO ]: Found specification of procedure False [2018-06-22 16:03:38,395 INFO ]: Found implementation of procedure False [2018-06-22 16:03:38,395 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 16:03:38,395 INFO ]: Found specification of procedure state [2018-06-22 16:03:38,395 INFO ]: Found implementation of procedure state [2018-06-22 16:03:38,395 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 16:03:38,395 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 16:03:38,395 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 16:03:38,718 INFO ]: Using library mode [2018-06-22 16:03:38,719 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:03:38 BoogieIcfgContainer [2018-06-22 16:03:38,719 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 16:03:38,720 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 16:03:38,720 INFO ]: Initializing TraceAbstraction... [2018-06-22 16:03:38,723 INFO ]: TraceAbstraction initialized [2018-06-22 16:03:38,723 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:03:38" (1/3) ... [2018-06-22 16:03:38,724 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71030032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:03:38, skipping insertion in model container [2018-06-22 16:03:38,724 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:03:38" (2/3) ... [2018-06-22 16:03:38,724 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71030032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:03:38, skipping insertion in model container [2018-06-22 16:03:38,725 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:03:38" (3/3) ... [2018-06-22 16:03:38,726 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 16:03:38,735 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 16:03:38,746 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 16:03:38,784 INFO ]: Using default assertion order modulation [2018-06-22 16:03:38,784 INFO ]: Interprodecural is true [2018-06-22 16:03:38,784 INFO ]: Hoare is false [2018-06-22 16:03:38,784 INFO ]: Compute interpolants for FPandBP [2018-06-22 16:03:38,784 INFO ]: Backedges is TWOTRACK [2018-06-22 16:03:38,784 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 16:03:38,784 INFO ]: Difference is false [2018-06-22 16:03:38,784 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 16:03:38,784 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 16:03:38,798 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 16:03:38,807 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 16:03:38,807 INFO ]: Found error trace [2018-06-22 16:03:38,808 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:03:38,808 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:03:38,813 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 16:03:38,815 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:03:38,816 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:03:38,853 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:03:38,853 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:03:38,853 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:03:38,921 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:03:39,222 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 16:03:39,224 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 16:03:39,224 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 16:03:39,225 INFO ]: Interpolant automaton has 4 states [2018-06-22 16:03:39,236 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 16:03:39,236 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 16:03:39,238 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 16:03:39,368 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:03:39,368 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 16:03:39,369 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 16:03:39,370 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 16:03:39,370 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:03:39,381 INFO ]: With dead ends: 13 [2018-06-22 16:03:39,381 INFO ]: Without dead ends: 13 [2018-06-22 16:03:39,383 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 16:03:39,396 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 16:03:39,415 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 16:03:39,417 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 16:03:39,418 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 16:03:39,419 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 16:03:39,420 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:03:39,420 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 16:03:39,420 INFO ]: Interpolant automaton has 4 states. [2018-06-22 16:03:39,420 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 16:03:39,421 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 16:03:39,421 INFO ]: Found error trace [2018-06-22 16:03:39,421 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:03:39,421 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:03:39,422 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 16:03:39,422 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:03:39,422 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:03:39,423 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:03:39,423 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:03:39,423 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:03:39,525 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:03:40,921 WARN ]: Spent 1.17 s on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2018-06-22 16:03:41,045 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:03:41,045 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:03:41,045 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 16:03:41,060 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:03:41,143 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:03:41,154 INFO ]: Computing forward predicates... [2018-06-22 16:03:43,461 WARN ]: Spent 334.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 28 [2018-06-22 16:03:43,878 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:03:43,915 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:03:43,915 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 16:03:43,915 INFO ]: Interpolant automaton has 9 states [2018-06-22 16:03:43,915 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 16:03:43,916 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-22 16:03:43,916 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 16:03:44,369 WARN ]: Spent 221.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2018-06-22 16:03:44,472 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:03:44,472 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 16:03:44,473 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 16:03:44,473 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 16:03:44,473 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:03:44,473 INFO ]: With dead ends: 15 [2018-06-22 16:03:44,473 INFO ]: Without dead ends: 15 [2018-06-22 16:03:44,474 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-06-22 16:03:44,474 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 16:03:44,477 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 16:03:44,477 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 16:03:44,478 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 16:03:44,478 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 16:03:44,478 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:03:44,478 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 16:03:44,478 INFO ]: Interpolant automaton has 9 states. [2018-06-22 16:03:44,478 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 16:03:44,478 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 16:03:44,478 INFO ]: Found error trace [2018-06-22 16:03:44,478 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:03:44,479 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:03:44,479 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 16:03:44,479 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:03:44,479 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:03:44,480 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:03:44,480 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:03:44,480 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:03:44,548 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:03:44,891 WARN ]: Spent 149.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-06-22 16:03:45,193 WARN ]: Spent 289.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2018-06-22 16:03:45,288 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:03:45,288 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:03:45,288 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 16:03:45,303 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 16:03:45,393 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 16:03:45,393 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:03:45,399 INFO ]: Computing forward predicates... [2018-06-22 16:03:46,381 WARN ]: Spent 434.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 32 [2018-06-22 16:03:47,099 WARN ]: Spent 357.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 39 [2018-06-22 16:03:47,318 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:03:47,343 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:03:47,343 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 16:03:47,343 INFO ]: Interpolant automaton has 13 states [2018-06-22 16:03:47,344 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 16:03:47,344 INFO ]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2018-06-22 16:03:47,344 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 16:03:48,076 WARN ]: Spent 648.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2018-06-22 16:03:48,698 WARN ]: Spent 528.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 73 [2018-06-22 16:03:49,054 WARN ]: Spent 319.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 91 [2018-06-22 16:03:49,097 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:03:49,097 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 16:03:49,097 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 16:03:49,097 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 16:03:49,097 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:03:49,098 INFO ]: With dead ends: 17 [2018-06-22 16:03:49,098 INFO ]: Without dead ends: 17 [2018-06-22 16:03:49,098 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-06-22 16:03:49,098 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 16:03:49,101 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 16:03:49,101 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 16:03:49,102 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 16:03:49,102 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 16:03:49,102 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:03:49,102 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 16:03:49,102 INFO ]: Interpolant automaton has 13 states. [2018-06-22 16:03:49,102 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 16:03:49,103 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 16:03:49,103 INFO ]: Found error trace [2018-06-22 16:03:49,103 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:03:49,103 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:03:49,103 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 16:03:49,103 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:03:49,103 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:03:49,104 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:03:49,104 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:03:49,104 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:03:49,244 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:03:49,953 WARN ]: Spent 489.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2018-06-22 16:03:50,172 WARN ]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2018-06-22 16:03:50,627 WARN ]: Spent 440.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2018-06-22 16:03:51,269 WARN ]: Spent 361.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 5 [2018-06-22 16:03:51,273 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 16:03:51,273 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:03:51,274 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 16:03:51,284 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 16:03:51,406 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 16:03:51,406 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:03:51,412 INFO ]: Computing forward predicates... [2018-06-22 16:03:52,440 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2018-06-22 16:03:52,609 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 16:03:52,629 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:03:52,629 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 16:03:52,630 INFO ]: Interpolant automaton has 17 states [2018-06-22 16:03:52,630 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 16:03:52,630 INFO ]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2018-06-22 16:03:52,630 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 16:03:53,329 WARN ]: Spent 594.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 154 [2018-06-22 16:03:53,997 WARN ]: Spent 529.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 88 [2018-06-22 16:03:54,462 WARN ]: Spent 296.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 89 [2018-06-22 16:03:54,842 WARN ]: Spent 340.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 106 [2018-06-22 16:03:54,891 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:03:54,891 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 16:03:54,892 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 16:03:54,892 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 16:03:54,892 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:03:54,893 INFO ]: With dead ends: 19 [2018-06-22 16:03:54,893 INFO ]: Without dead ends: 19 [2018-06-22 16:03:54,893 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2018-06-22 16:03:54,894 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 16:03:54,896 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 16:03:54,896 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 16:03:54,897 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 16:03:54,897 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 16:03:54,897 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:03:54,897 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 16:03:54,897 INFO ]: Interpolant automaton has 17 states. [2018-06-22 16:03:54,897 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 16:03:54,898 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 16:03:54,898 INFO ]: Found error trace [2018-06-22 16:03:54,898 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:03:54,898 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:03:54,898 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 16:03:54,898 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:03:54,898 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:03:54,899 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:03:54,899 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:03:54,899 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:03:54,986 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:03:55,439 WARN ]: Spent 179.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2018-06-22 16:03:55,654 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-06-22 16:03:55,776 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2018-06-22 16:03:55,896 WARN ]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2018-06-22 16:03:56,257 WARN ]: Spent 270.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-06-22 16:03:56,517 WARN ]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2018-06-22 16:03:56,588 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 16:03:56,588 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:03:56,588 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 16:03:56,594 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 16:03:56,696 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 16:03:56,696 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:03:56,705 INFO ]: Computing forward predicates... [2018-06-22 16:03:57,211 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:03:57,509 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:03:57,533 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:03:57,623 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 16:03:57,687 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:03:57,718 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:04:00,926 WARN ]: Spent 227.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2018-06-22 16:04:01,519 WARN ]: Spent 372.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 43 [2018-06-22 16:04:01,776 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2018-06-22 16:04:02,459 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 16:04:02,480 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:04:02,480 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-22 16:04:02,481 INFO ]: Interpolant automaton has 21 states [2018-06-22 16:04:02,481 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 16:04:02,481 INFO ]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2018-06-22 16:04:02,481 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-22 16:04:03,482 WARN ]: Spent 828.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 150 [2018-06-22 16:04:04,042 WARN ]: Spent 467.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 110 [2018-06-22 16:04:05,092 WARN ]: Spent 993.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 114 [2018-06-22 16:04:05,887 WARN ]: Spent 495.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 118 [2018-06-22 16:04:06,525 WARN ]: Spent 553.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 110 [2018-06-22 16:04:06,601 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:04:06,601 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 16:04:06,603 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 16:04:06,603 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-22 16:04:06,604 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:04:06,604 INFO ]: With dead ends: 21 [2018-06-22 16:04:06,604 INFO ]: Without dead ends: 21 [2018-06-22 16:04:06,605 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2018-06-22 16:04:06,605 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 16:04:06,611 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 16:04:06,611 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 16:04:06,612 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 16:04:06,612 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 16:04:06,612 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:04:06,612 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 16:04:06,612 INFO ]: Interpolant automaton has 21 states. [2018-06-22 16:04:06,612 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 16:04:06,613 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 16:04:06,613 INFO ]: Found error trace [2018-06-22 16:04:06,613 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:04:06,613 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:04:06,613 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 16:04:06,613 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:04:06,613 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:04:06,614 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:04:06,614 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 16:04:06,614 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:04:06,708 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:04:08,576 WARN ]: Spent 1.58 s on a formula simplification. DAG size of input: 85 DAG size of output: 38 [2018-06-22 16:04:08,726 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2018-06-22 16:04:09,015 WARN ]: Spent 204.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2018-06-22 16:04:09,191 WARN ]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 37 [2018-06-22 16:04:09,346 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2018-06-22 16:04:09,491 WARN ]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 24 [2018-06-22 16:04:09,615 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 27 [2018-06-22 16:04:09,931 WARN ]: Spent 278.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 31 [2018-06-22 16:04:10,071 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 16:04:10,071 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:04:10,071 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 16:04:10,082 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 16:04:10,194 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 16:04:10,194 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:04:10,202 INFO ]: Computing forward predicates... [2018-06-22 16:04:14,502 WARN ]: Spent 1.23 s on a formula simplification. DAG size of input: 254 DAG size of output: 34 [2018-06-22 16:04:14,918 WARN ]: Spent 290.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2018-06-22 16:04:20,187 WARN ]: Spent 2.67 s on a formula simplification. DAG size of input: 349 DAG size of output: 59 [2018-06-22 16:04:22,855 WARN ]: Spent 615.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 54 [2018-06-22 16:04:23,911 WARN ]: Spent 200.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2018-06-22 16:04:24,732 WARN ]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2018-06-22 16:04:25,161 WARN ]: Spent 250.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 37 [2018-06-22 16:04:25,724 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2018-06-22 16:04:25,788 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 16:04:25,810 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:04:25,810 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2018-06-22 16:04:25,810 INFO ]: Interpolant automaton has 25 states [2018-06-22 16:04:25,811 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 16:04:25,811 INFO ]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2018-06-22 16:04:25,811 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 25 states. [2018-06-22 16:04:27,905 WARN ]: Spent 1.97 s on a formula simplification. DAG size of input: 228 DAG size of output: 169 [2018-06-22 16:04:29,404 WARN ]: Spent 1.26 s on a formula simplification. DAG size of input: 266 DAG size of output: 103 [2018-06-22 16:04:30,887 WARN ]: Spent 1.38 s on a formula simplification. DAG size of input: 294 DAG size of output: 140 [2018-06-22 16:04:33,928 WARN ]: Spent 1.67 s on a formula simplification. DAG size of input: 280 DAG size of output: 145 [2018-06-22 16:04:35,520 WARN ]: Spent 1.49 s on a formula simplification. DAG size of input: 252 DAG size of output: 141 [2018-06-22 16:04:37,414 WARN ]: Spent 1.78 s on a formula simplification. DAG size of input: 232 DAG size of output: 149 [2018-06-22 16:04:37,529 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:04:37,529 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 16:04:37,529 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 16:04:37,529 INFO ]: Start accepts. Automaton has 25 states. Word has length 29 [2018-06-22 16:04:37,530 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:04:37,530 INFO ]: With dead ends: 17 [2018-06-22 16:04:37,530 INFO ]: Without dead ends: 0 [2018-06-22 16:04:37,530 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2018-06-22 16:04:37,530 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 16:04:37,530 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 16:04:37,531 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 16:04:37,531 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 16:04:37,531 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-06-22 16:04:37,531 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:04:37,531 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 16:04:37,531 INFO ]: Interpolant automaton has 25 states. [2018-06-22 16:04:37,531 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 16:04:37,531 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 16:04:37,535 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:04:37 BoogieIcfgContainer [2018-06-22 16:04:37,535 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 16:04:37,536 INFO ]: Toolchain (without parser) took 59267.67 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 939.0 MB). Free memory was 255.1 MB in the beginning and 426.7 MB in the end (delta: -171.5 MB). Peak memory consumption was 767.5 MB. Max. memory is 3.6 GB. [2018-06-22 16:04:37,536 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 16:04:37,537 INFO ]: ChcToBoogie took 66.82 ms. Allocated memory is still 306.7 MB. Free memory was 255.1 MB in the beginning and 253.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:04:37,537 INFO ]: Boogie Preprocessor took 39.95 ms. Allocated memory is still 306.7 MB. Free memory was 253.1 MB in the beginning and 251.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:04:37,537 INFO ]: RCFGBuilder took 338.01 ms. Allocated memory is still 306.7 MB. Free memory was 251.1 MB in the beginning and 235.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 3.6 GB. [2018-06-22 16:04:37,538 INFO ]: TraceAbstraction took 58815.24 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 939.0 MB). Free memory was 235.1 MB in the beginning and 426.7 MB in the end (delta: -191.6 MB). Peak memory consumption was 747.4 MB. Max. memory is 3.6 GB. [2018-06-22 16:04:37,541 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 66.82 ms. Allocated memory is still 306.7 MB. Free memory was 255.1 MB in the beginning and 253.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 39.95 ms. Allocated memory is still 306.7 MB. Free memory was 253.1 MB in the beginning and 251.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 338.01 ms. Allocated memory is still 306.7 MB. Free memory was 251.1 MB in the beginning and 235.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 58815.24 ms. Allocated memory was 306.7 MB in the beginning and 1.2 GB in the end (delta: 939.0 MB). Free memory was 235.1 MB in the beginning and 426.7 MB in the end (delta: -191.6 MB). Peak memory consumption was 747.4 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. SAFE Result, 58.7s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 20.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 132 SDslu, 409 SDs, 0 SdLazy, 347 SolverSat, 176 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 37.6s 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 36.7s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 163928 SizeOfPredicates, 283 NumberOfNonLiveVariables, 2425 ConjunctsInSsa, 537 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 70/250 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_all_e2_142_e7_209.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_16-04-37-549.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/car_all_e2_142_e7_209.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_16-04-37-549.csv Received shutdown request...