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/metros_4_e3_1025.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:24:41,952 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:24:41,954 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:24:41,964 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:24:41,964 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:24:41,965 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:24:41,966 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:24:41,968 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:24:41,970 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:24:41,970 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:24:41,971 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:24:41,971 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:24:41,972 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:24:41,973 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:24:41,974 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:24:41,975 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:24:41,976 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:24:41,978 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:24:41,982 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:24:41,983 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:24:41,984 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:24:41,986 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:24:41,986 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:24:41,987 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:24:41,987 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:24:41,988 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:24:41,989 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:24:41,990 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:24:41,991 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:24:41,991 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:24:41,992 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:24:41,992 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:24:41,993 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:24:41,993 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:24:41,994 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:24:41,994 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 19:24:42,007 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:24:42,007 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:24:42,007 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:24:42,008 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:24:42,008 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:24:42,009 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:24:42,009 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:24:42,009 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:24:42,009 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:24:42,009 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:24:42,010 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:24:42,010 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:24:42,010 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:24:42,010 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:24:42,010 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:24:42,010 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:24:42,011 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:24:42,011 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:24:42,011 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:24:42,012 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:24:42,012 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:24:42,056 INFO ]: Repository-Root is: /tmp [2018-06-22 19:24:42,070 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:24:42,076 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:24:42,077 INFO ]: Initializing SmtParser... [2018-06-22 19:24:42,077 INFO ]: SmtParser initialized [2018-06-22 19:24:42,078 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e3_1025.smt2 [2018-06-22 19:24:42,080 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 19:24:42,166 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e3_1025.smt2 unknown [2018-06-22 19:24:42,643 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e3_1025.smt2 [2018-06-22 19:24:42,647 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:24:42,666 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:24:42,667 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:24:42,667 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:24:42,667 INFO ]: ChcToBoogie initialized [2018-06-22 19:24:42,675 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:24:42" (1/1) ... [2018-06-22 19:24:42,775 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:42 Unit [2018-06-22 19:24:42,776 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:24:42,776 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:24:42,776 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:24:42,776 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:24:42,795 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:42" (1/1) ... [2018-06-22 19:24:42,795 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:42" (1/1) ... [2018-06-22 19:24:42,802 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:42" (1/1) ... [2018-06-22 19:24:42,803 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:42" (1/1) ... [2018-06-22 19:24:42,809 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:42" (1/1) ... [2018-06-22 19:24:42,814 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:42" (1/1) ... [2018-06-22 19:24:42,816 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:42" (1/1) ... [2018-06-22 19:24:42,819 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:24:42,821 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:24:42,821 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:24:42,821 INFO ]: RCFGBuilder initialized [2018-06-22 19:24:42,822 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:42" (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 [2018-06-22 19:24:42,834 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:24:42,834 INFO ]: Found specification of procedure False [2018-06-22 19:24:42,834 INFO ]: Found implementation of procedure False [2018-06-22 19:24:42,834 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:24:42,834 INFO ]: Found specification of procedure state [2018-06-22 19:24:42,834 INFO ]: Found implementation of procedure state [2018-06-22 19:24:42,834 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:24:42,834 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:24:42,834 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 19:24:43,195 INFO ]: Using library mode [2018-06-22 19:24:43,196 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:24:43 BoogieIcfgContainer [2018-06-22 19:24:43,196 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:24:43,198 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:24:43,198 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:24:43,205 INFO ]: TraceAbstraction initialized [2018-06-22 19:24:43,205 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:24:42" (1/3) ... [2018-06-22 19:24:43,206 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67913f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:24:43, skipping insertion in model container [2018-06-22 19:24:43,206 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:42" (2/3) ... [2018-06-22 19:24:43,207 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67913f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:24:43, skipping insertion in model container [2018-06-22 19:24:43,207 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:24:43" (3/3) ... [2018-06-22 19:24:43,209 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:24:43,218 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:24:43,230 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:24:43,270 INFO ]: Using default assertion order modulation [2018-06-22 19:24:43,270 INFO ]: Interprodecural is true [2018-06-22 19:24:43,270 INFO ]: Hoare is false [2018-06-22 19:24:43,270 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:24:43,270 INFO ]: Backedges is TWOTRACK [2018-06-22 19:24:43,270 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:24:43,270 INFO ]: Difference is false [2018-06-22 19:24:43,270 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:24:43,270 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:24:43,284 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:24:43,294 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:24:43,294 INFO ]: Found error trace [2018-06-22 19:24:43,295 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:24:43,295 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:24:43,301 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:24:43,303 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:24:43,303 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:24:43,341 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:43,341 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:24:43,341 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:43,460 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:43,625 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:24:43,628 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:24:43,628 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:24:43,630 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:24:43,644 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:24:43,645 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:24:43,646 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:24:43,785 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:24:43,786 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:24:43,786 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:24:43,787 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:24:43,788 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:24:43,799 INFO ]: With dead ends: 13 [2018-06-22 19:24:43,799 INFO ]: Without dead ends: 13 [2018-06-22 19:24:43,801 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 19:24:43,813 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:24:43,832 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:24:43,834 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:24:43,834 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:24:43,836 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:24:43,836 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:24:43,836 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:24:43,836 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:24:43,836 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:24:43,840 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:24:43,840 INFO ]: Found error trace [2018-06-22 19:24:43,840 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:24:43,840 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:24:43,840 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:24:43,840 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:24:43,840 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:24:43,841 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:43,841 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:24:43,841 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:43,917 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:44,191 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:24:44,191 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:24:44,191 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:24:44,199 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:24:44,329 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:44,339 INFO ]: Computing forward predicates... [2018-06-22 19:24:44,723 WARN ]: Spent 211.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-22 19:24:44,986 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:24:45,007 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:24:45,007 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 19:24:45,008 INFO ]: Interpolant automaton has 9 states [2018-06-22 19:24:45,008 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 19:24:45,009 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 19:24:45,009 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 19:24:45,431 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:24:45,431 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:24:45,431 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:24:45,431 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 19:24:45,431 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:24:45,432 INFO ]: With dead ends: 15 [2018-06-22 19:24:45,432 INFO ]: Without dead ends: 15 [2018-06-22 19:24:45,433 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:24:45,433 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:24:45,436 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:24:45,436 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:24:45,436 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:24:45,436 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:24:45,436 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:24:45,436 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:24:45,437 INFO ]: Interpolant automaton has 9 states. [2018-06-22 19:24:45,437 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:24:45,437 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:24:45,437 INFO ]: Found error trace [2018-06-22 19:24:45,437 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:24:45,437 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:24:45,437 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:24:45,438 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:24:45,438 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:24:45,438 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:45,438 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:24:45,438 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:45,531 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:46,138 WARN ]: Spent 352.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-06-22 19:24:46,199 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:24:46,199 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:24:46,199 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:24:46,212 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:24:46,353 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:24:46,353 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:46,359 INFO ]: Computing forward predicates... [2018-06-22 19:24:46,862 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-06-22 19:24:47,008 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:24:47,028 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:24:47,028 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 19:24:47,028 INFO ]: Interpolant automaton has 13 states [2018-06-22 19:24:47,029 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 19:24:47,029 INFO ]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-06-22 19:24:47,029 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 19:24:47,356 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:24:47,356 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:24:47,357 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:24:47,358 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 19:24:47,358 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:24:47,358 INFO ]: With dead ends: 17 [2018-06-22 19:24:47,358 INFO ]: Without dead ends: 17 [2018-06-22 19:24:47,358 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:24:47,358 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:24:47,360 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:24:47,360 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:24:47,361 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:24:47,361 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:24:47,361 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:24:47,361 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:24:47,361 INFO ]: Interpolant automaton has 13 states. [2018-06-22 19:24:47,361 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:24:47,361 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:24:47,361 INFO ]: Found error trace [2018-06-22 19:24:47,362 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:24:47,362 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:24:47,362 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 19:24:47,362 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:24:47,362 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:24:47,363 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:47,363 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:24:47,363 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:47,546 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:48,003 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2018-06-22 19:24:48,160 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:24:48,160 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:24:48,160 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:24:48,175 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:24:48,329 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:24:48,329 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:48,337 INFO ]: Computing forward predicates... [2018-06-22 19:24:48,693 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:24:48,727 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:24:48,727 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 19:24:48,727 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:24:48,727 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:24:48,727 INFO ]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:24:48,727 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 19:24:49,274 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:24:49,275 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:24:49,276 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:24:49,276 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 19:24:49,276 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:24:49,276 INFO ]: With dead ends: 19 [2018-06-22 19:24:49,276 INFO ]: Without dead ends: 19 [2018-06-22 19:24:49,277 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2018-06-22 19:24:49,277 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:24:49,279 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:24:49,279 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:24:49,279 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:24:49,279 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:24:49,279 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:24:49,279 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:24:49,279 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:24:49,279 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:24:49,284 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:24:49,284 INFO ]: Found error trace [2018-06-22 19:24:49,284 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:24:49,285 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:24:49,285 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 19:24:49,285 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:24:49,285 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:24:49,285 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:49,285 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:24:49,285 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:49,448 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:49,862 WARN ]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:24:50,865 WARN ]: Spent 924.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 18 [2018-06-22 19:24:51,295 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 10 [2018-06-22 19:24:51,307 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:24:51,308 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:24:51,308 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:24:51,315 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:24:51,476 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:24:51,476 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:51,486 INFO ]: Computing forward predicates... [2018-06-22 19:24:51,951 INFO ]: Checked inductivity of 36 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 19:24:51,972 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:24:51,972 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-06-22 19:24:51,972 INFO ]: Interpolant automaton has 20 states [2018-06-22 19:24:51,972 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 19:24:51,973 INFO ]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2018-06-22 19:24:51,973 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 19:24:52,245 WARN ]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2018-06-22 19:24:52,657 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:24:52,657 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 19:24:52,660 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 19:24:52,660 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 19:24:52,660 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:24:52,661 INFO ]: With dead ends: 23 [2018-06-22 19:24:52,661 INFO ]: Without dead ends: 23 [2018-06-22 19:24:52,661 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2018-06-22 19:24:52,662 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 19:24:52,665 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 19:24:52,665 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 19:24:52,666 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 19:24:52,666 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 25 [2018-06-22 19:24:52,666 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:24:52,666 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 19:24:52,666 INFO ]: Interpolant automaton has 20 states. [2018-06-22 19:24:52,666 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 19:24:52,667 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 19:24:52,667 INFO ]: Found error trace [2018-06-22 19:24:52,667 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:24:52,667 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:24:52,667 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 5 times [2018-06-22 19:24:52,667 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:24:52,667 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:24:52,668 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:52,668 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:24:52,668 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:53,464 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:55,662 WARN ]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:25:01,285 WARN ]: Spent 5.23 s on a formula simplification. DAG size of input: 409 DAG size of output: 18 [2018-06-22 19:25:06,593 WARN ]: Spent 4.93 s on a formula simplification. DAG size of input: 605 DAG size of output: 28 [2018-06-22 19:25:09,141 WARN ]: Spent 2.25 s on a formula simplification. DAG size of input: 630 DAG size of output: 27 [2018-06-22 19:25:12,861 WARN ]: Spent 3.49 s on a formula simplification. DAG size of input: 542 DAG size of output: 28 [2018-06-22 19:25:14,082 WARN ]: Spent 1.06 s on a formula simplification. DAG size of input: 319 DAG size of output: 25 [2018-06-22 19:25:15,401 WARN ]: Spent 1.16 s on a formula simplification. DAG size of input: 317 DAG size of output: 23 [2018-06-22 19:25:20,109 WARN ]: Spent 4.25 s on a formula simplification. DAG size of input: 786 DAG size of output: 27 [2018-06-22 19:25:26,220 WARN ]: Spent 5.56 s on a formula simplification. DAG size of input: 1102 DAG size of output: 26 [2018-06-22 19:25:41,010 WARN ]: Spent 13.93 s on a formula simplification. DAG size of input: 934 DAG size of output: 28 [2018-06-22 19:25:44,545 WARN ]: Spent 3.22 s on a formula simplification. DAG size of input: 358 DAG size of output: 16 [2018-06-22 19:25:44,564 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 19:25:44,564 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:25:44,564 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:25:44,570 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 19:25:44,836 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-06-22 19:25:44,836 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:25:44,846 INFO ]: Computing forward predicates... [2018-06-22 19:25:45,333 INFO ]: Checked inductivity of 78 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-06-22 19:25:45,355 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:25:45,355 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 28 [2018-06-22 19:25:45,355 INFO ]: Interpolant automaton has 28 states [2018-06-22 19:25:45,355 INFO ]: Constructing interpolant automaton starting with 28 interpolants. [2018-06-22 19:25:45,356 INFO ]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2018-06-22 19:25:45,356 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 28 states. [2018-06-22 19:25:45,673 WARN ]: Spent 168.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2018-06-22 19:25:45,965 WARN ]: Spent 216.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 96 [2018-06-22 19:25:46,240 WARN ]: Spent 236.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 103 [2018-06-22 19:25:46,524 WARN ]: Spent 242.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 108 [2018-06-22 19:25:46,789 WARN ]: Spent 222.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 101 [2018-06-22 19:25:47,022 WARN ]: Spent 182.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2018-06-22 19:25:47,415 WARN ]: Spent 161.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2018-06-22 19:25:47,472 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:25:47,472 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 19:25:47,472 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 19:25:47,472 INFO ]: Start accepts. Automaton has 28 states. Word has length 33 [2018-06-22 19:25:47,472 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:25:47,473 INFO ]: With dead ends: 25 [2018-06-22 19:25:47,473 INFO ]: Without dead ends: 25 [2018-06-22 19:25:47,474 INFO ]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 49.4s TimeCoverageRelationStatistics Valid=223, Invalid=1037, Unknown=0, NotChecked=0, Total=1260 [2018-06-22 19:25:47,474 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 19:25:47,479 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 19:25:47,479 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 19:25:47,480 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 19:25:47,480 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 33 [2018-06-22 19:25:47,480 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:25:47,480 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 19:25:47,480 INFO ]: Interpolant automaton has 28 states. [2018-06-22 19:25:47,480 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 19:25:47,481 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 19:25:47,481 INFO ]: Found error trace [2018-06-22 19:25:47,481 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:25:47,481 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:25:47,482 INFO ]: Analyzing trace with hash -1494134477, now seen corresponding path program 6 times [2018-06-22 19:25:47,482 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:25:47,482 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:25:47,482 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:25:47,482 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:25:47,482 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:25:48,527 INFO ]: Conjunction of SSA is unsat Received shutdown request... [2018-06-22 19:25:49,466 FATAL]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:210) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:228) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:410) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:425) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-06-22 19:25:49,470 INFO ]: Toolchain (without parser) took 66822.06 ms. Allocated memory was 302.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 242.6 MB in the beginning and 302.0 MB in the end (delta: -59.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 19:25:49,471 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 302.0 MB. Free memory is still 266.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:25:49,471 INFO ]: ChcToBoogie took 108.97 ms. Allocated memory is still 302.0 MB. Free memory was 242.6 MB in the beginning and 240.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:25:49,471 INFO ]: Boogie Preprocessor took 42.96 ms. Allocated memory is still 302.0 MB. Free memory was 240.6 MB in the beginning and 238.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:25:49,472 INFO ]: RCFGBuilder took 374.82 ms. Allocated memory is still 302.0 MB. Free memory was 238.6 MB in the beginning and 214.6 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 3.6 GB. [2018-06-22 19:25:49,472 INFO ]: TraceAbstraction took 66271.76 ms. Allocated memory was 302.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 214.6 MB in the beginning and 302.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 19:25:49,474 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 302.0 MB. Free memory is still 266.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 108.97 ms. Allocated memory is still 302.0 MB. Free memory was 242.6 MB in the beginning and 240.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 42.96 ms. Allocated memory is still 302.0 MB. Free memory was 240.6 MB in the beginning and 238.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 374.82 ms. Allocated memory is still 302.0 MB. Free memory was 238.6 MB in the beginning and 214.6 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 66271.76 ms. Allocated memory was 302.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 214.6 MB in the beginning and 302.0 MB in the end (delta: -87.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:265) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_4_e3_1025.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-25-49-483.csv Completed graceful shutdown