java -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/chccomp2018/chcToBoogie_automizer.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_2_e3_329_e5_124.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 14:57:13,708 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 14:57:13,711 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 14:57:13,725 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 14:57:13,725 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 14:57:13,726 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 14:57:13,727 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 14:57:13,729 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 14:57:13,731 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 14:57:13,732 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 14:57:13,733 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 14:57:13,733 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 14:57:13,736 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 14:57:13,737 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 14:57:13,738 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 14:57:13,738 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 14:57:13,743 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 14:57:13,756 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 14:57:13,758 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 14:57:13,759 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 14:57:13,760 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 14:57:13,762 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 14:57:13,762 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 14:57:13,763 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 14:57:13,764 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 14:57:13,765 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 14:57:13,770 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 14:57:13,771 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 14:57:13,772 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 14:57:13,772 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 14:57:13,773 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 14:57:13,778 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 14:57:13,779 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 14:57:13,780 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 14:57:13,780 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 14:57:13,781 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 14:57:13,804 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 14:57:13,805 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 14:57:13,807 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 14:57:13,807 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 14:57:13,808 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 14:57:13,808 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 14:57:13,809 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 14:57:13,809 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 14:57:13,809 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 14:57:13,809 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 14:57:13,809 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 14:57:13,810 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 14:57:13,813 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 14:57:13,814 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 14:57:13,814 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 14:57:13,814 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 14:57:13,814 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 14:57:13,815 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 14:57:13,816 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 14:57:13,871 INFO ]: Repository-Root is: /tmp [2018-06-18 14:57:13,888 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 14:57:13,894 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 14:57:13,896 INFO ]: Initializing SmtParser... [2018-06-18 14:57:13,896 INFO ]: SmtParser initialized [2018-06-18 14:57:13,896 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_2_e3_329_e5_124.smt2 [2018-06-18 14:57:13,898 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 [2018-06-18 14:57:13,988 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_2_e3_329_e5_124.smt2 unknown [2018-06-18 14:57:14,224 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_2_e3_329_e5_124.smt2 [2018-06-18 14:57:14,230 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 14:57:14,235 INFO ]: Walking toolchain with 4 elements. [2018-06-18 14:57:14,235 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 14:57:14,235 INFO ]: Initializing ChcToBoogie... [2018-06-18 14:57:14,235 INFO ]: ChcToBoogie initialized [2018-06-18 14:57:14,242 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 02:57:14" (1/1) ... [2018-06-18 14:57:14,308 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:57:14 Unit [2018-06-18 14:57:14,308 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 14:57:14,309 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 14:57:14,309 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 14:57:14,309 INFO ]: Boogie Preprocessor initialized [2018-06-18 14:57:14,336 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:57:14" (1/1) ... [2018-06-18 14:57:14,336 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:57:14" (1/1) ... [2018-06-18 14:57:14,346 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:57:14" (1/1) ... [2018-06-18 14:57:14,346 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:57:14" (1/1) ... [2018-06-18 14:57:14,350 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:57:14" (1/1) ... [2018-06-18 14:57:14,351 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:57:14" (1/1) ... [2018-06-18 14:57:14,362 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:57:14" (1/1) ... [2018-06-18 14:57:14,364 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 14:57:14,364 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 14:57:14,364 INFO ]: Initializing RCFGBuilder... [2018-06-18 14:57:14,364 INFO ]: RCFGBuilder initialized [2018-06-18 14:57:14,365 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:57:14" (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) [2018-06-18 14:57:14,396 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 14:57:14,396 INFO ]: Found specification of procedure False [2018-06-18 14:57:14,396 INFO ]: Found implementation of procedure False [2018-06-18 14:57:14,396 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 14:57:14,396 INFO ]: Found specification of procedure state [2018-06-18 14:57:14,396 INFO ]: Found implementation of procedure state [2018-06-18 14:57:14,396 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 14:57:14,396 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 14:57:14,396 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 [2018-06-18 14:57:14,727 INFO ]: Using library mode [2018-06-18 14:57:14,727 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 02:57:14 BoogieIcfgContainer [2018-06-18 14:57:14,727 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 14:57:14,738 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 14:57:14,738 INFO ]: Initializing TraceAbstraction... [2018-06-18 14:57:14,741 INFO ]: TraceAbstraction initialized [2018-06-18 14:57:14,742 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 02:57:14" (1/3) ... [2018-06-18 14:57:14,743 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3622596b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 02:57:14, skipping insertion in model container [2018-06-18 14:57:14,743 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:57:14" (2/3) ... [2018-06-18 14:57:14,743 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3622596b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 02:57:14, skipping insertion in model container [2018-06-18 14:57:14,743 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 02:57:14" (3/3) ... [2018-06-18 14:57:14,745 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 14:57:14,762 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 14:57:14,771 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 14:57:14,824 INFO ]: Using default assertion order modulation [2018-06-18 14:57:14,825 INFO ]: Interprodecural is true [2018-06-18 14:57:14,825 INFO ]: Hoare is false [2018-06-18 14:57:14,825 INFO ]: Compute interpolants for FPandBP [2018-06-18 14:57:14,825 INFO ]: Backedges is TWOTRACK [2018-06-18 14:57:14,825 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 14:57:14,825 INFO ]: Difference is false [2018-06-18 14:57:14,825 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 14:57:14,825 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 14:57:14,844 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 14:57:14,859 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 14:57:14,860 INFO ]: Found error trace [2018-06-18 14:57:14,862 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:57:14,862 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:57:14,868 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 14:57:14,871 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:57:14,871 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:57:14,914 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:57:14,914 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:57:14,914 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:57:14,983 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:57:14,989 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:57:15,245 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 14:57:15,247 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 14:57:15,247 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 14:57:15,249 INFO ]: Interpolant automaton has 4 states [2018-06-18 14:57:15,261 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 14:57:15,261 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 14:57:15,263 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 14:57:15,338 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:57:15,338 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 14:57:15,339 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 14:57:15,340 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 14:57:15,340 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:57:15,351 INFO ]: With dead ends: 13 [2018-06-18 14:57:15,352 INFO ]: Without dead ends: 13 [2018-06-18 14:57:15,354 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 [2018-06-18 14:57:15,367 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 14:57:15,402 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 14:57:15,405 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 14:57:15,406 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 14:57:15,407 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 14:57:15,408 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:57:15,408 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 14:57:15,408 INFO ]: Interpolant automaton has 4 states. [2018-06-18 14:57:15,408 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 14:57:15,410 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 14:57:15,410 INFO ]: Found error trace [2018-06-18 14:57:15,410 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:57:15,410 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:57:15,410 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 14:57:15,410 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:57:15,410 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:57:15,411 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:57:15,411 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:57:15,411 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:57:15,453 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:57:15,454 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:57:16,053 WARN ]: Spent 405.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 20 [2018-06-18 14:57:16,240 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 14:57:16,240 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 14:57:16,240 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 [2018-06-18 14:57:16,248 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:57:16,316 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:57:16,327 INFO ]: Computing forward predicates... [2018-06-18 14:57:16,428 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:57:17,599 WARN ]: Spent 228.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 5 [2018-06-18 14:57:17,821 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 14:57:17,848 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 14:57:17,848 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-18 14:57:17,849 INFO ]: Interpolant automaton has 9 states [2018-06-18 14:57:17,849 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-18 14:57:17,849 INFO ]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-06-18 14:57:17,849 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-18 14:57:18,216 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:57:18,216 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 14:57:18,217 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 14:57:18,217 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-18 14:57:18,218 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:57:18,218 INFO ]: With dead ends: 15 [2018-06-18 14:57:18,218 INFO ]: Without dead ends: 15 [2018-06-18 14:57:18,219 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-06-18 14:57:18,219 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 14:57:18,222 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 14:57:18,222 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 14:57:18,223 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 14:57:18,223 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 14:57:18,223 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:57:18,223 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 14:57:18,223 INFO ]: Interpolant automaton has 9 states. [2018-06-18 14:57:18,223 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 14:57:18,224 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 14:57:18,224 INFO ]: Found error trace [2018-06-18 14:57:18,224 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:57:18,224 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:57:18,224 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 14:57:18,224 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:57:18,224 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:57:18,225 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:57:18,225 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:57:18,225 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:57:18,274 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:57:18,275 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:57:18,608 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 14:57:18,608 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 14:57:18,608 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 [2018-06-18 14:57:18,614 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 14:57:18,683 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 14:57:18,683 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:57:18,687 INFO ]: Computing forward predicates... [2018-06-18 14:57:18,771 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:57:19,253 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 14:57:19,276 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 14:57:19,277 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-18 14:57:19,277 INFO ]: Interpolant automaton has 11 states [2018-06-18 14:57:19,277 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-18 14:57:19,277 INFO ]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-06-18 14:57:19,278 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-18 14:57:19,426 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:57:19,427 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-18 14:57:19,427 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 14:57:19,427 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-18 14:57:19,427 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:57:19,428 INFO ]: With dead ends: 11 [2018-06-18 14:57:19,428 INFO ]: Without dead ends: 0 [2018-06-18 14:57:19,428 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-06-18 14:57:19,428 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-18 14:57:19,428 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-18 14:57:19,428 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-18 14:57:19,428 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-18 14:57:19,428 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-18 14:57:19,428 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:57:19,428 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-18 14:57:19,428 INFO ]: Interpolant automaton has 11 states. [2018-06-18 14:57:19,429 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-18 14:57:19,429 INFO ]: Finished isEmpty. No accepting run. [2018-06-18 14:57:19,433 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 02:57:19 BoogieIcfgContainer [2018-06-18 14:57:19,433 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 14:57:19,433 INFO ]: Toolchain (without parser) took 5203.28 ms. Allocated memory was 307.2 MB in the beginning and 341.8 MB in the end (delta: 34.6 MB). Free memory was 260.8 MB in the beginning and 257.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 37.5 MB. Max. memory is 3.6 GB. [2018-06-18 14:57:19,434 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 14:57:19,435 INFO ]: ChcToBoogie took 73.65 ms. Allocated memory is still 307.2 MB. Free memory was 260.8 MB in the beginning and 258.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 14:57:19,437 INFO ]: Boogie Preprocessor took 54.45 ms. Allocated memory is still 307.2 MB. Free memory was 258.8 MB in the beginning and 256.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 14:57:19,438 INFO ]: RCFGBuilder took 363.17 ms. Allocated memory is still 307.2 MB. Free memory was 256.8 MB in the beginning and 246.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-18 14:57:19,438 INFO ]: TraceAbstraction took 4694.81 ms. Allocated memory was 307.2 MB in the beginning and 341.8 MB in the end (delta: 34.6 MB). Free memory was 246.8 MB in the beginning and 257.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 3.6 GB. [2018-06-18 14:57:19,447 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 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 73.65 ms. Allocated memory is still 307.2 MB. Free memory was 260.8 MB in the beginning and 258.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 54.45 ms. Allocated memory is still 307.2 MB. Free memory was 258.8 MB in the beginning and 256.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 363.17 ms. Allocated memory is still 307.2 MB. Free memory was 256.8 MB in the beginning and 246.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4694.81 ms. Allocated memory was 307.2 MB in the beginning and 341.8 MB in the end (delta: 34.6 MB). Free memory was 246.8 MB in the beginning and 257.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 23.5 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, 4.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 12 SDslu, 71 SDs, 0 SdLazy, 63 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.0s 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, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 2532 SizeOfPredicates, 39 NumberOfNonLiveVariables, 349 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/26 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_2_e3_329_e5_124.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_14-57-19-462.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/durationThm_2_e3_329_e5_124.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_14-57-19-462.csv Received shutdown request...