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/durationThm_3_e3_442_e5_260.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 17:24:05,332 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 17:24:05,335 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 17:24:05,349 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 17:24:05,350 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 17:24:05,350 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 17:24:05,351 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 17:24:05,355 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 17:24:05,356 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 17:24:05,358 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 17:24:05,358 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 17:24:05,359 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 17:24:05,360 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 17:24:05,361 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 17:24:05,364 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 17:24:05,365 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 17:24:05,366 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 17:24:05,377 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 17:24:05,378 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 17:24:05,379 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 17:24:05,380 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 17:24:05,385 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 17:24:05,385 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 17:24:05,386 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 17:24:05,386 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 17:24:05,390 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 17:24:05,390 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 17:24:05,391 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 17:24:05,392 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 17:24:05,392 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 17:24:05,393 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 17:24:05,397 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 17:24:05,397 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 17:24:05,398 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 17:24:05,398 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 17:24:05,399 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 17:24:05,421 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 17:24:05,421 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 17:24:05,422 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 17:24:05,422 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 17:24:05,423 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 17:24:05,423 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 17:24:05,423 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 17:24:05,423 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 17:24:05,424 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 17:24:05,424 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 17:24:05,424 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 17:24:05,424 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 17:24:05,424 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 17:24:05,424 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 17:24:05,425 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 17:24:05,425 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 17:24:05,425 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 17:24:05,425 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 17:24:05,425 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 17:24:05,427 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 17:24:05,427 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 17:24:05,482 INFO ]: Repository-Root is: /tmp [2018-06-22 17:24:05,497 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 17:24:05,502 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 17:24:05,503 INFO ]: Initializing SmtParser... [2018-06-22 17:24:05,503 INFO ]: SmtParser initialized [2018-06-22 17:24:05,505 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_3_e3_442_e5_260.smt2 [2018-06-22 17:24:05,506 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 17:24:05,598 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_3_e3_442_e5_260.smt2 unknown [2018-06-22 17:24:05,814 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_3_e3_442_e5_260.smt2 [2018-06-22 17:24:05,819 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 17:24:05,824 INFO ]: Walking toolchain with 4 elements. [2018-06-22 17:24:05,825 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 17:24:05,825 INFO ]: Initializing ChcToBoogie... [2018-06-22 17:24:05,825 INFO ]: ChcToBoogie initialized [2018-06-22 17:24:05,828 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:24:05" (1/1) ... [2018-06-22 17:24:05,875 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:05 Unit [2018-06-22 17:24:05,877 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 17:24:05,878 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 17:24:05,878 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 17:24:05,878 INFO ]: Boogie Preprocessor initialized [2018-06-22 17:24:05,900 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:05" (1/1) ... [2018-06-22 17:24:05,900 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:05" (1/1) ... [2018-06-22 17:24:05,908 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:05" (1/1) ... [2018-06-22 17:24:05,908 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:05" (1/1) ... [2018-06-22 17:24:05,911 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:05" (1/1) ... [2018-06-22 17:24:05,913 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:05" (1/1) ... [2018-06-22 17:24:05,914 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:05" (1/1) ... [2018-06-22 17:24:05,924 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 17:24:05,926 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 17:24:05,926 INFO ]: Initializing RCFGBuilder... [2018-06-22 17:24:05,926 INFO ]: RCFGBuilder initialized [2018-06-22 17:24:05,927 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:05" (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 17:24:05,941 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 17:24:05,941 INFO ]: Found specification of procedure False [2018-06-22 17:24:05,941 INFO ]: Found implementation of procedure False [2018-06-22 17:24:05,941 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 17:24:05,941 INFO ]: Found specification of procedure state [2018-06-22 17:24:05,941 INFO ]: Found implementation of procedure state [2018-06-22 17:24:05,941 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 17:24:05,941 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 17:24:05,941 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 17:24:06,281 INFO ]: Using library mode [2018-06-22 17:24:06,281 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:24:06 BoogieIcfgContainer [2018-06-22 17:24:06,281 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 17:24:06,282 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 17:24:06,282 INFO ]: Initializing TraceAbstraction... [2018-06-22 17:24:06,285 INFO ]: TraceAbstraction initialized [2018-06-22 17:24:06,286 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:24:05" (1/3) ... [2018-06-22 17:24:06,296 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9648c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:24:06, skipping insertion in model container [2018-06-22 17:24:06,296 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:24:05" (2/3) ... [2018-06-22 17:24:06,296 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9648c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:24:06, skipping insertion in model container [2018-06-22 17:24:06,296 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:24:06" (3/3) ... [2018-06-22 17:24:06,298 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 17:24:06,310 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 17:24:06,322 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 17:24:06,372 INFO ]: Using default assertion order modulation [2018-06-22 17:24:06,373 INFO ]: Interprodecural is true [2018-06-22 17:24:06,373 INFO ]: Hoare is false [2018-06-22 17:24:06,373 INFO ]: Compute interpolants for FPandBP [2018-06-22 17:24:06,373 INFO ]: Backedges is TWOTRACK [2018-06-22 17:24:06,373 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 17:24:06,373 INFO ]: Difference is false [2018-06-22 17:24:06,374 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 17:24:06,374 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 17:24:06,392 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 17:24:06,412 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 17:24:06,412 INFO ]: Found error trace [2018-06-22 17:24:06,413 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:24:06,413 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:24:06,419 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 17:24:06,421 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:24:06,421 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:24:06,470 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:24:06,470 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:24:06,470 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:24:06,538 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:24:06,709 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 17:24:06,711 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 17:24:06,711 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 17:24:06,712 INFO ]: Interpolant automaton has 4 states [2018-06-22 17:24:06,724 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 17:24:06,724 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 17:24:06,726 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 17:24:06,824 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:24:06,824 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 17:24:06,825 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 17:24:06,826 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 17:24:06,827 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:24:06,838 INFO ]: With dead ends: 13 [2018-06-22 17:24:06,838 INFO ]: Without dead ends: 13 [2018-06-22 17:24:06,843 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 17:24:06,861 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 17:24:06,886 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 17:24:06,887 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 17:24:06,888 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 17:24:06,890 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 17:24:06,890 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:24:06,890 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 17:24:06,890 INFO ]: Interpolant automaton has 4 states. [2018-06-22 17:24:06,890 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 17:24:06,892 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 17:24:06,892 INFO ]: Found error trace [2018-06-22 17:24:06,892 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:24:06,892 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:24:06,892 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 17:24:06,892 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:24:06,893 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:24:06,896 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:24:06,896 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:24:06,896 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:24:06,964 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:24:07,279 WARN ]: Spent 194.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2018-06-22 17:24:07,462 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:24:07,463 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:24:07,463 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 17:24:07,478 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 17:24:07,552 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:24:07,560 INFO ]: Computing forward predicates... [2018-06-22 17:24:07,976 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:24:08,015 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:24:08,015 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 17:24:08,015 INFO ]: Interpolant automaton has 8 states [2018-06-22 17:24:08,016 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 17:24:08,016 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 17:24:08,016 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 17:24:08,311 WARN ]: Spent 162.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2018-06-22 17:24:08,379 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:24:08,379 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 17:24:08,380 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 17:24:08,380 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 17:24:08,380 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:24:08,381 INFO ]: With dead ends: 15 [2018-06-22 17:24:08,381 INFO ]: Without dead ends: 15 [2018-06-22 17:24:08,382 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 17:24:08,382 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 17:24:08,386 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 17:24:08,386 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 17:24:08,387 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 17:24:08,389 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 17:24:08,389 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:24:08,389 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 17:24:08,389 INFO ]: Interpolant automaton has 8 states. [2018-06-22 17:24:08,389 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 17:24:08,389 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 17:24:08,390 INFO ]: Found error trace [2018-06-22 17:24:08,390 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:24:08,390 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:24:08,390 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 17:24:08,390 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:24:08,390 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:24:08,391 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:24:08,391 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:24:08,391 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:24:08,479 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:24:09,043 WARN ]: Spent 292.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 23 [2018-06-22 17:24:09,217 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 17:24:09,217 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:24:09,217 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 17:24:09,223 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 17:24:09,285 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 17:24:09,285 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:24:09,292 INFO ]: Computing forward predicates... [2018-06-22 17:24:10,420 INFO ]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 17:24:10,439 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:24:10,439 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 17:24:10,439 INFO ]: Interpolant automaton has 12 states [2018-06-22 17:24:10,439 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 17:24:10,440 INFO ]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-06-22 17:24:10,440 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 17:24:10,635 WARN ]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-06-22 17:24:10,819 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:24:10,819 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-22 17:24:10,819 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 17:24:10,819 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 17:24:10,819 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:24:10,819 INFO ]: With dead ends: 11 [2018-06-22 17:24:10,820 INFO ]: Without dead ends: 0 [2018-06-22 17:24:10,820 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-06-22 17:24:10,820 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 17:24:10,820 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 17:24:10,820 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 17:24:10,820 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 17:24:10,820 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-22 17:24:10,820 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:24:10,820 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 17:24:10,820 INFO ]: Interpolant automaton has 12 states. [2018-06-22 17:24:10,820 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 17:24:10,821 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 17:24:10,825 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:24:10 BoogieIcfgContainer [2018-06-22 17:24:10,825 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 17:24:10,826 INFO ]: Toolchain (without parser) took 5006.03 ms. Allocated memory was 303.6 MB in the beginning and 341.8 MB in the end (delta: 38.3 MB). Free memory was 257.0 MB in the beginning and 225.6 MB in the end (delta: 31.4 MB). Peak memory consumption was 69.6 MB. Max. memory is 3.6 GB. [2018-06-22 17:24:10,826 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 303.6 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 17:24:10,827 INFO ]: ChcToBoogie took 52.99 ms. Allocated memory is still 303.6 MB. Free memory was 255.9 MB in the beginning and 254.9 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 3.6 GB. [2018-06-22 17:24:10,827 INFO ]: Boogie Preprocessor took 46.96 ms. Allocated memory is still 303.6 MB. Free memory was 254.9 MB in the beginning and 252.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:24:10,828 INFO ]: RCFGBuilder took 355.81 ms. Allocated memory is still 303.6 MB. Free memory was 252.9 MB in the beginning and 243.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:24:10,829 INFO ]: TraceAbstraction took 4542.57 ms. Allocated memory was 303.6 MB in the beginning and 341.8 MB in the end (delta: 38.3 MB). Free memory was 242.0 MB in the beginning and 225.6 MB in the end (delta: 16.4 MB). Peak memory consumption was 54.7 MB. Max. memory is 3.6 GB. [2018-06-22 17:24:10,832 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 303.6 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 52.99 ms. Allocated memory is still 303.6 MB. Free memory was 255.9 MB in the beginning and 254.9 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 3.6 GB. * Boogie Preprocessor took 46.96 ms. Allocated memory is still 303.6 MB. Free memory was 254.9 MB in the beginning and 252.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 355.81 ms. Allocated memory is still 303.6 MB. Free memory was 252.9 MB in the beginning and 243.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4542.57 ms. Allocated memory was 303.6 MB in the beginning and 341.8 MB in the end (delta: 38.3 MB). Free memory was 242.0 MB in the beginning and 225.6 MB in the end (delta: 16.4 MB). Peak memory consumption was 54.7 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, 4.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 18 SDslu, 72 SDs, 0 SdLazy, 60 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.2s 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 4256 SizeOfPredicates, 61 NumberOfNonLiveVariables, 395 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 10/26 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/durationThm_3_e3_442_e5_260.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_17-24-10-843.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/durationThm_3_e3_442_e5_260.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_17-24-10-843.csv Received shutdown request...