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/rtp_6.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:48:48,651 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:48:48,653 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:48:48,667 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:48:48,667 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:48:48,668 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:48:48,672 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:48:48,676 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:48:48,678 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:48:48,680 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:48:48,681 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:48:48,681 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:48:48,682 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:48:48,683 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:48:48,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:48:48,688 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:48:48,690 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:48:48,703 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:48:48,704 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:48:48,705 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:48:48,706 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:48:48,708 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:48:48,709 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:48:48,709 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:48:48,709 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:48:48,710 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:48:48,716 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:48:48,717 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:48:48,717 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:48:48,718 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:48:48,723 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:48:48,723 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:48:48,724 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:48:48,724 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:48:48,725 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:48:48,725 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 19:48:48,739 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:48:48,739 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:48:48,740 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:48:48,740 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:48:48,741 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:48:48,741 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:48:48,741 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:48:48,741 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:48:48,742 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:48:48,742 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:48:48,742 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:48:48,742 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:48:48,742 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:48:48,743 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:48:48,743 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:48:48,743 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:48:48,743 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:48:48,743 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:48:48,743 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:48:48,745 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:48:48,745 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:48:48,782 INFO ]: Repository-Root is: /tmp [2018-06-22 19:48:48,796 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:48:48,802 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:48:48,803 INFO ]: Initializing SmtParser... [2018-06-22 19:48:48,803 INFO ]: SmtParser initialized [2018-06-22 19:48:48,804 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/rtp_6.smt2 [2018-06-22 19:48:48,806 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 19:48:48,882 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/rtp_6.smt2 unknown [2018-06-22 19:48:49,553 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/rtp_6.smt2 [2018-06-22 19:48:49,557 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:48:49,567 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:48:49,577 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:48:49,577 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:48:49,577 INFO ]: ChcToBoogie initialized [2018-06-22 19:48:49,580 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:48:49" (1/1) ... [2018-06-22 19:48:49,666 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:48:49 Unit [2018-06-22 19:48:49,666 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:48:49,667 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:48:49,667 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:48:49,667 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:48:49,688 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:48:49" (1/1) ... [2018-06-22 19:48:49,688 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:48:49" (1/1) ... [2018-06-22 19:48:49,719 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:48:49" (1/1) ... [2018-06-22 19:48:49,719 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:48:49" (1/1) ... [2018-06-22 19:48:49,733 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:48:49" (1/1) ... [2018-06-22 19:48:49,734 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:48:49" (1/1) ... [2018-06-22 19:48:49,742 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:48:49" (1/1) ... [2018-06-22 19:48:49,750 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:48:49,750 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:48:49,750 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:48:49,750 INFO ]: RCFGBuilder initialized [2018-06-22 19:48:49,751 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:48:49" (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 19:48:49,761 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:48:49,761 INFO ]: Found specification of procedure False [2018-06-22 19:48:49,761 INFO ]: Found implementation of procedure False [2018-06-22 19:48:49,761 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:48:49,761 INFO ]: Found specification of procedure state [2018-06-22 19:48:49,761 INFO ]: Found implementation of procedure state [2018-06-22 19:48:49,761 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:48:49,761 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:48:49,761 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 19:48:50,225 INFO ]: Using library mode [2018-06-22 19:48:50,226 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:48:50 BoogieIcfgContainer [2018-06-22 19:48:50,226 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:48:50,228 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:48:50,228 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:48:50,231 INFO ]: TraceAbstraction initialized [2018-06-22 19:48:50,232 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:48:49" (1/3) ... [2018-06-22 19:48:50,233 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2322d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:48:50, skipping insertion in model container [2018-06-22 19:48:50,233 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:48:49" (2/3) ... [2018-06-22 19:48:50,233 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2322d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:48:50, skipping insertion in model container [2018-06-22 19:48:50,233 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:48:50" (3/3) ... [2018-06-22 19:48:50,236 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:48:50,245 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:48:50,258 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:48:50,308 INFO ]: Using default assertion order modulation [2018-06-22 19:48:50,309 INFO ]: Interprodecural is true [2018-06-22 19:48:50,309 INFO ]: Hoare is false [2018-06-22 19:48:50,309 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:48:50,309 INFO ]: Backedges is TWOTRACK [2018-06-22 19:48:50,309 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:48:50,309 INFO ]: Difference is false [2018-06-22 19:48:50,309 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:48:50,309 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:48:50,324 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:48:50,337 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:48:50,337 INFO ]: Found error trace [2018-06-22 19:48:50,340 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:48:50,340 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:48:50,346 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:48:50,348 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:48:50,348 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:48:50,395 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:48:50,395 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:48:50,395 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:48:50,518 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:48:50,867 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 1 [2018-06-22 19:48:50,870 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:48:50,872 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:48:50,872 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:48:50,874 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:48:50,889 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:48:50,889 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:48:50,892 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:48:51,044 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:48:51,044 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:48:51,046 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:48:51,047 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:48:51,047 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:48:51,061 INFO ]: With dead ends: 13 [2018-06-22 19:48:51,061 INFO ]: Without dead ends: 13 [2018-06-22 19:48:51,065 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:48:51,083 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:48:51,119 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:48:51,120 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:48:51,120 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:48:51,122 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:48:51,122 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:48:51,122 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:48:51,122 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:48:51,122 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:48:51,123 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:48:51,123 INFO ]: Found error trace [2018-06-22 19:48:51,124 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:48:51,124 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:48:51,124 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:48:51,124 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:48:51,124 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:48:51,125 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:48:51,125 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:48:51,125 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:48:51,235 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:48:51,971 WARN ]: Spent 464.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2018-06-22 19:48:52,348 WARN ]: Spent 142.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 1 [2018-06-22 19:48:52,350 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:48:52,350 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:48:52,350 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) [2018-06-22 19:48:52,369 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:48:52,533 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:48:52,546 INFO ]: Computing forward predicates... [2018-06-22 19:48:52,948 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:48:52,983 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:48:54,406 WARN ]: Spent 132.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 8 [2018-06-22 19:48:54,464 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:48:54,504 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:48:54,504 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:48:54,505 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:48:54,505 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:48:54,505 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:48:54,505 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:48:54,790 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:48:54,790 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:48:54,791 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:48:54,791 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:48:54,791 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:48:54,792 INFO ]: With dead ends: 15 [2018-06-22 19:48:54,792 INFO ]: Without dead ends: 15 [2018-06-22 19:48:54,792 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 19:48:54,793 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:48:54,795 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:48:54,795 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:48:54,796 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:48:54,796 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:48:54,796 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:48:54,796 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:48:54,796 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:48:54,796 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:48:54,796 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:48:54,796 INFO ]: Found error trace [2018-06-22 19:48:54,796 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:48:54,797 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:48:54,797 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:48:54,797 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:48:54,797 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:48:54,798 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:48:54,798 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:48:54,798 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:48:54,940 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:48:55,419 WARN ]: Spent 231.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2018-06-22 19:48:55,490 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:48:55,490 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:48:55,490 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 19:48:55,502 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:48:55,707 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:48:55,707 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:48:55,716 INFO ]: Computing forward predicates... [2018-06-22 19:48:57,602 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 19:48:57,616 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 19:48:58,109 WARN ]: Simplifying disjunction of 15168 conjuctions. This might take some time... [2018-06-22 19:49:15,090 INFO ]: Simplified to disjunction of 7584 conjuctions. [2018-06-22 19:49:15,166 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 19:49:17,209 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 19:49:17,217 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 19:49:19,886 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 19:49:19,890 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 19:49:21,547 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 19:49:21,550 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:49:21,952 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 19:49:21,972 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 19:49:21,988 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 19:49:21,989 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 19:49:23,505 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 19:49:23,509 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 19:49:23,641 WARN ]: Simplifying disjunction of 15168 conjuctions. This might take some time... [2018-06-22 19:49:58,894 INFO ]: Simplified to disjunction of 15168 conjuctions. [2018-06-22 19:49:58,951 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 19:49:58,956 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 19:49:59,045 WARN ]: Simplifying disjunction of 7584 conjuctions. This might take some time... Received shutdown request... [2018-06-22 19:50:00,838 INFO ]: Timeout while computing interpolants [2018-06-22 19:50:01,038 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:50:01,038 WARN ]: Verification canceled [2018-06-22 19:50:01,043 WARN ]: Timeout [2018-06-22 19:50:01,043 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:50:01 BoogieIcfgContainer [2018-06-22 19:50:01,043 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:50:01,043 INFO ]: Toolchain (without parser) took 71485.99 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 233.9 MB in the beginning and 916.1 MB in the end (delta: -682.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 19:50:01,044 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:50:01,044 INFO ]: ChcToBoogie took 89.45 ms. Allocated memory is still 309.3 MB. Free memory was 233.9 MB in the beginning and 230.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:50:01,045 INFO ]: Boogie Preprocessor took 83.05 ms. Allocated memory is still 309.3 MB. Free memory was 230.9 MB in the beginning and 228.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:50:01,051 INFO ]: RCFGBuilder took 475.73 ms. Allocated memory was 309.3 MB in the beginning and 324.5 MB in the end (delta: 15.2 MB). Free memory was 228.9 MB in the beginning and 292.6 MB in the end (delta: -63.7 MB). Peak memory consumption was 46.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:50:01,052 INFO ]: TraceAbstraction took 70815.16 ms. Allocated memory was 324.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 292.6 MB in the beginning and 916.1 MB in the end (delta: -623.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:50:01,054 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 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 89.45 ms. Allocated memory is still 309.3 MB. Free memory was 233.9 MB in the beginning and 230.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 83.05 ms. Allocated memory is still 309.3 MB. Free memory was 230.9 MB in the beginning and 228.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 475.73 ms. Allocated memory was 309.3 MB in the beginning and 324.5 MB in the end (delta: 15.2 MB). Free memory was 228.9 MB in the beginning and 292.6 MB in the end (delta: -63.7 MB). Peak memory consumption was 46.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 70815.16 ms. Allocated memory was 324.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 292.6 MB in the beginning and 916.1 MB in the end (delta: -623.5 MB). Peak memory consumption was 1.3 GB. 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 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 7584 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 70.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 8 SDslu, 45 SDs, 0 SdLazy, 28 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1200 SizeOfPredicates, 19 NumberOfNonLiveVariables, 728 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 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/rtp_6.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-50-01-068.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rtp_6.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-50-01-068.csv Completed graceful shutdown