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_e1_118.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-55b8104 [2018-06-18 14:56:32,142 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-18 14:56:32,145 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-18 14:56:32,158 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-18 14:56:32,159 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-18 14:56:32,159 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-18 14:56:32,163 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-18 14:56:32,165 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-18 14:56:32,166 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-18 14:56:32,167 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-18 14:56:32,169 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-18 14:56:32,169 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-18 14:56:32,170 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-18 14:56:32,171 INFO L177 SettingsManager]: ChcToBoogie provides no preferences, ignoring... [2018-06-18 14:56:32,171 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-18 14:56:32,174 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-18 14:56:32,176 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-18 14:56:32,186 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-18 14:56:32,187 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-18 14:56:32,188 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-18 14:56:32,189 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-18 14:56:32,194 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-18 14:56:32,194 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-18 14:56:32,194 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-18 14:56:32,197 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-18 14:56:32,198 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-18 14:56:32,199 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-18 14:56:32,200 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-18 14:56:32,201 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-18 14:56:32,202 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-18 14:56:32,202 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-18 14:56:32,203 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-18 14:56:32,203 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-18 14:56:32,209 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-18 14:56:32,210 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-18 14:56:32,210 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chccomp2018/chcToBoogie_automizer.epf [2018-06-18 14:56:32,232 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-18 14:56:32,232 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-18 14:56:32,232 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-18 14:56:32,233 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-18 14:56:32,234 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-18 14:56:32,234 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-18 14:56:32,234 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-18 14:56:32,234 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-18 14:56:32,237 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 14:56:32,237 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-18 14:56:32,237 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-18 14:56:32,238 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-18 14:56:32,238 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-18 14:56:32,238 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-18 14:56:32,238 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-18 14:56:32,238 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-18 14:56:32,239 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-18 14:56:32,240 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-18 14:56:32,240 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-18 14:56:32,288 INFO ]: Repository-Root is: /tmp [2018-06-18 14:56:32,302 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-18 14:56:32,308 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-18 14:56:32,309 INFO ]: Initializing SmtParser... [2018-06-18 14:56:32,310 INFO ]: SmtParser initialized [2018-06-18 14:56:32,310 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_2_e1_118.smt2 [2018-06-18 14:56:32,312 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 14:56:32,410 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_2_e1_118.smt2 unknown [2018-06-18 14:56:32,634 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_2_e1_118.smt2 [2018-06-18 14:56:32,639 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-18 14:56:32,645 INFO ]: Walking toolchain with 4 elements. [2018-06-18 14:56:32,646 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-18 14:56:32,646 INFO ]: Initializing ChcToBoogie... [2018-06-18 14:56:32,646 INFO ]: ChcToBoogie initialized [2018-06-18 14:56:32,654 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 02:56:32" (1/1) ... [2018-06-18 14:56:32,708 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:56:32 Unit [2018-06-18 14:56:32,708 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-18 14:56:32,709 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-18 14:56:32,709 INFO ]: Initializing Boogie Preprocessor... [2018-06-18 14:56:32,709 INFO ]: Boogie Preprocessor initialized [2018-06-18 14:56:32,737 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:56:32" (1/1) ... [2018-06-18 14:56:32,738 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:56:32" (1/1) ... [2018-06-18 14:56:32,748 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:56:32" (1/1) ... [2018-06-18 14:56:32,748 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:56:32" (1/1) ... [2018-06-18 14:56:32,753 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:56:32" (1/1) ... [2018-06-18 14:56:32,760 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:56:32" (1/1) ... [2018-06-18 14:56:32,762 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:56:32" (1/1) ... [2018-06-18 14:56:32,763 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-18 14:56:32,773 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-18 14:56:32,773 INFO ]: Initializing RCFGBuilder... [2018-06-18 14:56:32,773 INFO ]: RCFGBuilder initialized [2018-06-18 14:56:32,774 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:56:32" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-18 14:56:32,799 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-18 14:56:32,799 INFO ]: Found specification of procedure False [2018-06-18 14:56:32,799 INFO ]: Found implementation of procedure False [2018-06-18 14:56:32,799 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-18 14:56:32,799 INFO ]: Found specification of procedure state [2018-06-18 14:56:32,799 INFO ]: Found implementation of procedure state [2018-06-18 14:56:32,799 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-18 14:56:32,799 INFO ]: Found specification of procedure Ultimate.START [2018-06-18 14:56:32,799 INFO ]: Found implementation of procedure Ultimate.START [2018-06-18 14:56:33,104 INFO ]: Using library mode [2018-06-18 14:56:33,104 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 02:56:33 BoogieIcfgContainer [2018-06-18 14:56:33,104 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-18 14:56:33,105 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-18 14:56:33,105 INFO ]: Initializing TraceAbstraction... [2018-06-18 14:56:33,109 INFO ]: TraceAbstraction initialized [2018-06-18 14:56:33,109 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 18.06 02:56:32" (1/3) ... [2018-06-18 14:56:33,110 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209c7f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 18.06 02:56:33, skipping insertion in model container [2018-06-18 14:56:33,110 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 18.06 02:56:32" (2/3) ... [2018-06-18 14:56:33,110 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209c7f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.06 02:56:33, skipping insertion in model container [2018-06-18 14:56:33,111 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.06 02:56:33" (3/3) ... [2018-06-18 14:56:33,113 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-18 14:56:33,123 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-18 14:56:33,132 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-18 14:56:33,178 INFO ]: Using default assertion order modulation [2018-06-18 14:56:33,178 INFO ]: Interprodecural is true [2018-06-18 14:56:33,178 INFO ]: Hoare is false [2018-06-18 14:56:33,178 INFO ]: Compute interpolants for FPandBP [2018-06-18 14:56:33,178 INFO ]: Backedges is TWOTRACK [2018-06-18 14:56:33,178 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-18 14:56:33,178 INFO ]: Difference is false [2018-06-18 14:56:33,178 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-18 14:56:33,178 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-18 14:56:33,193 INFO ]: Start isEmpty. Operand 13 states. [2018-06-18 14:56:33,204 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-18 14:56:33,204 INFO ]: Found error trace [2018-06-18 14:56:33,205 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:56:33,205 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:56:33,209 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-18 14:56:33,211 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:56:33,212 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:56:33,248 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:33,249 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:56:33,249 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:33,311 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:33,319 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:56:33,491 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-18 14:56:33,493 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-18 14:56:33,493 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-18 14:56:33,494 INFO ]: Interpolant automaton has 4 states [2018-06-18 14:56:33,505 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-18 14:56:33,505 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-18 14:56:33,508 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-18 14:56:33,604 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:56:33,604 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-18 14:56:33,604 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-18 14:56:33,605 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-18 14:56:33,606 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:56:33,624 INFO ]: With dead ends: 13 [2018-06-18 14:56:33,624 INFO ]: Without dead ends: 13 [2018-06-18 14:56:33,626 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 14:56:33,645 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-18 14:56:33,667 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-18 14:56:33,668 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-18 14:56:33,668 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-18 14:56:33,670 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-18 14:56:33,670 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:56:33,670 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-18 14:56:33,670 INFO ]: Interpolant automaton has 4 states. [2018-06-18 14:56:33,670 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-18 14:56:33,672 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-18 14:56:33,672 INFO ]: Found error trace [2018-06-18 14:56:33,672 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:56:33,672 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:56:33,672 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-18 14:56:33,672 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:56:33,672 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:56:33,673 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:33,673 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:56:33,673 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:33,757 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:33,758 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:56:34,826 WARN ]: Spent 870.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2018-06-18 14:56:34,967 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 14:56:34,967 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 14:56:34,967 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 14:56:34,976 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:56:35,045 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:35,058 INFO ]: Computing forward predicates... [2018-06-18 14:56:35,282 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:35,302 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:35,399 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:35,412 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:37,444 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-18 14:56:37,468 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 14:56:37,468 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-18 14:56:37,469 INFO ]: Interpolant automaton has 9 states [2018-06-18 14:56:37,469 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-18 14:56:37,469 INFO ]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-06-18 14:56:37,469 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-18 14:56:37,854 WARN ]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-06-18 14:56:37,992 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:56:37,992 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-18 14:56:37,992 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-18 14:56:37,993 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-18 14:56:37,993 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:56:37,993 INFO ]: With dead ends: 15 [2018-06-18 14:56:37,993 INFO ]: Without dead ends: 15 [2018-06-18 14:56:37,994 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-06-18 14:56:37,994 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-18 14:56:37,997 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-18 14:56:37,997 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-18 14:56:37,998 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-18 14:56:37,998 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-18 14:56:37,998 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:56:37,998 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-18 14:56:37,998 INFO ]: Interpolant automaton has 9 states. [2018-06-18 14:56:37,998 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-18 14:56:37,998 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-18 14:56:37,998 INFO ]: Found error trace [2018-06-18 14:56:37,998 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:56:37,999 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:56:37,999 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-18 14:56:37,999 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:56:37,999 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:56:38,000 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:38,000 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-18 14:56:38,000 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:38,069 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:38,070 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:56:38,549 WARN ]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-06-18 14:56:38,719 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 14:56:38,719 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 14:56:38,720 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 14:56:38,735 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-18 14:56:38,774 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-18 14:56:38,774 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:38,778 INFO ]: Computing forward predicates... [2018-06-18 14:56:39,064 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:40,172 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-18 14:56:40,200 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 14:56:40,200 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-18 14:56:40,200 INFO ]: Interpolant automaton has 12 states [2018-06-18 14:56:40,200 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-18 14:56:40,200 INFO ]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-06-18 14:56:40,200 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-18 14:56:40,694 WARN ]: Spent 425.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 107 [2018-06-18 14:56:40,964 WARN ]: Spent 201.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-06-18 14:56:41,152 WARN ]: Spent 160.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-06-18 14:56:41,294 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:56:41,294 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 14:56:41,297 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-18 14:56:41,297 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-18 14:56:41,297 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:56:41,298 INFO ]: With dead ends: 17 [2018-06-18 14:56:41,298 INFO ]: Without dead ends: 17 [2018-06-18 14:56:41,298 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-06-18 14:56:41,298 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-18 14:56:41,301 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-18 14:56:41,302 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-18 14:56:41,302 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-18 14:56:41,302 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-18 14:56:41,302 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:56:41,302 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-18 14:56:41,302 INFO ]: Interpolant automaton has 12 states. [2018-06-18 14:56:41,303 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-18 14:56:41,303 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-18 14:56:41,303 INFO ]: Found error trace [2018-06-18 14:56:41,303 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:56:41,303 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:56:41,304 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-18 14:56:41,304 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:56:41,304 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:56:41,304 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:41,305 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 14:56:41,305 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:41,433 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:41,434 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:56:42,004 WARN ]: Spent 227.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2018-06-18 14:56:42,440 WARN ]: Spent 419.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2018-06-18 14:56:42,894 WARN ]: Spent 334.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2018-06-18 14:56:43,086 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 14:56:43,086 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 14:56:43,086 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 14:56:43,095 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-18 14:56:43,176 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-18 14:56:43,176 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:43,180 INFO ]: Computing forward predicates... [2018-06-18 14:56:43,294 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:43,301 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:43,311 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:43,325 WARN ]: expecting exponential blowup for input size 6 [2018-06-18 14:56:44,646 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-18 14:56:44,667 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 14:56:44,667 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-18 14:56:44,667 INFO ]: Interpolant automaton has 17 states [2018-06-18 14:56:44,667 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-18 14:56:44,667 INFO ]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2018-06-18 14:56:44,667 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-18 14:56:45,193 WARN ]: Spent 437.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 154 [2018-06-18 14:56:45,569 WARN ]: Spent 313.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 116 [2018-06-18 14:56:45,999 WARN ]: Spent 394.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 130 [2018-06-18 14:56:46,482 WARN ]: Spent 422.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 134 [2018-06-18 14:56:46,846 WARN ]: Spent 311.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2018-06-18 14:56:46,887 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:56:46,887 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-18 14:56:46,888 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-18 14:56:46,888 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-18 14:56:46,888 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:56:46,889 INFO ]: With dead ends: 21 [2018-06-18 14:56:46,889 INFO ]: Without dead ends: 21 [2018-06-18 14:56:46,889 INFO ]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2018-06-18 14:56:46,889 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-18 14:56:46,893 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-18 14:56:46,893 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-18 14:56:46,894 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-18 14:56:46,894 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-06-18 14:56:46,894 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:56:46,894 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-18 14:56:46,894 INFO ]: Interpolant automaton has 17 states. [2018-06-18 14:56:46,894 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-18 14:56:46,895 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-18 14:56:46,895 INFO ]: Found error trace [2018-06-18 14:56:46,895 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-18 14:56:46,895 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-18 14:56:46,895 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 4 times [2018-06-18 14:56:46,895 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-18 14:56:46,895 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-18 14:56:46,896 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:46,896 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-18 14:56:46,896 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-18 14:56:46,986 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:46,988 WARN ]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-06-18 14:56:47,389 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2018-06-18 14:56:47,707 WARN ]: Spent 236.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2018-06-18 14:56:48,203 WARN ]: Spent 416.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-06-18 14:56:48,499 WARN ]: Spent 238.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2018-06-18 14:56:48,821 INFO ]: Checked inductivity of 55 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-18 14:56:48,821 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-18 14:56:48,821 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-18 14:56:48,827 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-18 14:56:48,899 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-18 14:56:48,899 INFO ]: Conjunction of SSA is unsat [2018-06-18 14:56:48,905 INFO ]: Computing forward predicates... [2018-06-18 14:56:51,226 WARN ]: Spent 271.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2018-06-18 14:56:54,380 WARN ]: Spent 1.17 s on a formula simplification. DAG size of input: 30 DAG size of output: 24 [2018-06-18 14:56:55,913 WARN ]: Spent 1.03 s on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2018-06-18 14:56:55,922 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-18 14:56:55,943 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-18 14:56:55,943 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2018-06-18 14:56:55,943 INFO ]: Interpolant automaton has 23 states [2018-06-18 14:56:55,943 INFO ]: Constructing interpolant automaton starting with 23 interpolants. [2018-06-18 14:56:55,943 INFO ]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2018-06-18 14:56:55,943 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 23 states. [2018-06-18 14:56:56,730 WARN ]: Spent 681.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 143 [2018-06-18 14:56:57,188 WARN ]: Spent 313.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 103 [2018-06-18 14:56:57,579 WARN ]: Spent 341.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 99 [2018-06-18 14:56:57,974 WARN ]: Spent 349.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 108 [2018-06-18 14:56:58,349 WARN ]: Spent 317.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 114 [2018-06-18 14:56:58,672 WARN ]: Spent 264.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 93 [2018-06-18 14:56:58,695 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-18 14:56:58,695 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-18 14:56:58,695 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-18 14:56:58,695 INFO ]: Start accepts. Automaton has 23 states. Word has length 29 [2018-06-18 14:56:58,695 INFO ]: Finished accepts. some prefix is accepted. [2018-06-18 14:56:58,696 INFO ]: With dead ends: 17 [2018-06-18 14:56:58,696 INFO ]: Without dead ends: 0 [2018-06-18 14:56:58,696 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2018-06-18 14:56:58,696 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-18 14:56:58,696 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-18 14:56:58,696 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-18 14:56:58,696 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-18 14:56:58,696 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-06-18 14:56:58,696 INFO ]: Finished accepts. word is rejected. [2018-06-18 14:56:58,696 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-18 14:56:58,696 INFO ]: Interpolant automaton has 23 states. [2018-06-18 14:56:58,696 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-18 14:56:58,696 INFO ]: Finished isEmpty. No accepting run. [2018-06-18 14:56:58,701 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.06 02:56:58 BoogieIcfgContainer [2018-06-18 14:56:58,701 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-18 14:56:58,702 INFO ]: Toolchain (without parser) took 26061.94 ms. Allocated memory was 309.3 MB in the beginning and 638.6 MB in the end (delta: 329.3 MB). Free memory was 262.7 MB in the beginning and 459.2 MB in the end (delta: -196.5 MB). Peak memory consumption was 132.8 MB. Max. memory is 3.6 GB. [2018-06-18 14:56:58,703 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-18 14:56:58,703 INFO ]: ChcToBoogie took 62.76 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-18 14:56:58,703 INFO ]: Boogie Preprocessor took 54.35 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 258.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-18 14:56:58,704 INFO ]: RCFGBuilder took 331.60 ms. Allocated memory is still 309.3 MB. Free memory was 258.6 MB in the beginning and 248.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-18 14:56:58,704 INFO ]: TraceAbstraction took 25595.26 ms. Allocated memory was 309.3 MB in the beginning and 638.6 MB in the end (delta: 329.3 MB). Free memory was 248.6 MB in the beginning and 459.2 MB in the end (delta: -210.6 MB). Peak memory consumption was 118.7 MB. Max. memory is 3.6 GB. [2018-06-18 14:56:58,707 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.76 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 54.35 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 258.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 331.60 ms. Allocated memory is still 309.3 MB. Free memory was 258.6 MB in the beginning and 248.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 25595.26 ms. Allocated memory was 309.3 MB in the beginning and 638.6 MB in the end (delta: 329.3 MB). Free memory was 248.6 MB in the beginning and 459.2 MB in the end (delta: -210.6 MB). Peak memory consumption was 118.7 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, 25.5s OverallTime, 5 OverallIterations, 6 TraceHistogramMax, 6.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 99 SDslu, 234 SDs, 0 SdLazy, 198 SolverSat, 133 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 16.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 17.8s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 60968 SizeOfPredicates, 187 NumberOfNonLiveVariables, 1063 ConjunctsInSsa, 252 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 52/178 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_e1_118.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-18_14-56-58-718.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/durationThm_2_e1_118.smt2_chcToBoogie_automizer.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-18_14-56-58-718.csv Received shutdown request...