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_1091_e1_1044.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:24:44,268 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:24:44,271 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:24:44,285 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:24:44,285 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:24:44,286 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:24:44,287 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:24:44,289 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:24:44,290 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:24:44,292 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:24:44,292 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:24:44,293 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:24:44,294 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:24:44,295 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:24:44,297 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:24:44,299 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:24:44,300 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:24:44,309 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:24:44,311 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:24:44,312 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:24:44,312 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:24:44,317 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:24:44,318 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:24:44,318 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:24:44,319 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:24:44,320 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:24:44,322 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:24:44,322 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:24:44,323 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:24:44,324 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:24:44,324 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:24:44,328 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:24:44,329 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:24:44,329 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:24:44,330 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:24:44,330 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 19:24:44,348 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:24:44,348 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:24:44,349 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:24:44,349 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:24:44,350 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:24:44,350 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:24:44,350 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:24:44,351 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:24:44,351 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:24:44,351 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:24:44,351 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:24:44,351 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:24:44,351 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:24:44,352 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:24:44,352 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:24:44,352 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:24:44,352 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:24:44,352 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:24:44,352 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:24:44,357 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:24:44,358 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:24:44,412 INFO ]: Repository-Root is: /tmp [2018-06-22 19:24:44,428 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:24:44,433 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:24:44,435 INFO ]: Initializing SmtParser... [2018-06-22 19:24:44,435 INFO ]: SmtParser initialized [2018-06-22 19:24:44,435 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e3_1091_e1_1044.smt2 [2018-06-22 19:24:44,437 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 19:24:44,525 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e3_1091_e1_1044.smt2 unknown [2018-06-22 19:24:44,936 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_4_e3_1091_e1_1044.smt2 [2018-06-22 19:24:44,941 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:24:44,946 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:24:44,946 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:24:44,946 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:24:44,946 INFO ]: ChcToBoogie initialized [2018-06-22 19:24:44,949 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:24:44" (1/1) ... [2018-06-22 19:24:45,005 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:45 Unit [2018-06-22 19:24:45,005 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:24:45,006 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:24:45,006 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:24:45,006 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:24:45,031 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:45" (1/1) ... [2018-06-22 19:24:45,031 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:45" (1/1) ... [2018-06-22 19:24:45,052 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:45" (1/1) ... [2018-06-22 19:24:45,052 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:45" (1/1) ... [2018-06-22 19:24:45,057 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:45" (1/1) ... [2018-06-22 19:24:45,059 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:45" (1/1) ... [2018-06-22 19:24:45,070 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:45" (1/1) ... [2018-06-22 19:24:45,073 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:24:45,073 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:24:45,073 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:24:45,073 INFO ]: RCFGBuilder initialized [2018-06-22 19:24:45,074 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:45" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 19:24:45,083 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:24:45,083 INFO ]: Found specification of procedure False [2018-06-22 19:24:45,083 INFO ]: Found implementation of procedure False Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:24:45,085 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:24:45,085 INFO ]: Found specification of procedure state [2018-06-22 19:24:45,085 INFO ]: Found implementation of procedure state [2018-06-22 19:24:45,085 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:24:45,085 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:24:45,085 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 19:24:45,477 INFO ]: Using library mode [2018-06-22 19:24:45,479 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:24:45 BoogieIcfgContainer [2018-06-22 19:24:45,479 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:24:45,480 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:24:45,480 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:24:45,487 INFO ]: TraceAbstraction initialized [2018-06-22 19:24:45,487 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:24:44" (1/3) ... [2018-06-22 19:24:45,488 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e1c3a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:24:45, skipping insertion in model container [2018-06-22 19:24:45,488 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:24:45" (2/3) ... [2018-06-22 19:24:45,488 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e1c3a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:24:45, skipping insertion in model container [2018-06-22 19:24:45,488 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:24:45" (3/3) ... [2018-06-22 19:24:45,492 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:24:45,502 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:24:45,514 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:24:45,554 INFO ]: Using default assertion order modulation [2018-06-22 19:24:45,555 INFO ]: Interprodecural is true [2018-06-22 19:24:45,555 INFO ]: Hoare is false [2018-06-22 19:24:45,555 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:24:45,555 INFO ]: Backedges is TWOTRACK [2018-06-22 19:24:45,555 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:24:45,555 INFO ]: Difference is false [2018-06-22 19:24:45,555 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:24:45,555 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:24:45,567 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:24:45,577 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:24:45,578 INFO ]: Found error trace [2018-06-22 19:24:45,578 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:24:45,578 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:24:45,582 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:24:45,584 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:24:45,584 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:24:45,617 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:45,618 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:24:45,618 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:45,726 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:45,919 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:24:45,930 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:24:45,931 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:24:45,932 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:24:45,949 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:24:45,949 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:24:45,952 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:24:46,104 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:24:46,104 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:24:46,104 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:24:46,106 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:24:46,106 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:24:46,116 INFO ]: With dead ends: 13 [2018-06-22 19:24:46,116 INFO ]: Without dead ends: 13 [2018-06-22 19:24:46,117 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 19:24:46,130 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:24:46,157 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:24:46,158 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:24:46,159 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:24:46,160 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:24:46,160 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:24:46,160 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:24:46,160 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:24:46,160 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:24:46,161 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:24:46,161 INFO ]: Found error trace [2018-06-22 19:24:46,161 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:24:46,162 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:24:46,162 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:24:46,162 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:24:46,162 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:24:46,163 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:46,163 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:24:46,163 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:46,242 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:46,473 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:24:46,473 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:24:46,473 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 19:24:46,483 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:24:46,621 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:46,631 INFO ]: Computing forward predicates... [2018-06-22 19:24:46,976 WARN ]: Spent 165.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-22 19:24:47,130 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:24:47,152 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:24:47,152 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 19:24:47,153 INFO ]: Interpolant automaton has 9 states [2018-06-22 19:24:47,153 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 19:24:47,153 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 19:24:47,153 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 19:24:47,432 WARN ]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 19:24:47,820 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:24:47,820 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:24:47,821 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:24:47,821 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 19:24:47,821 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:24:47,822 INFO ]: With dead ends: 15 [2018-06-22 19:24:47,822 INFO ]: Without dead ends: 15 [2018-06-22 19:24:47,823 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:24:47,823 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:24:47,825 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:24:47,825 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:24:47,826 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:24:47,826 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:24:47,827 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:24:47,827 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:24:47,827 INFO ]: Interpolant automaton has 9 states. [2018-06-22 19:24:47,827 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:24:47,827 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:24:47,827 INFO ]: Found error trace [2018-06-22 19:24:47,828 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:24:47,828 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:24:47,828 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:24:47,828 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:24:47,828 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:24:47,829 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:47,829 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:24:47,829 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:47,976 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:48,316 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:24:48,316 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:24:48,316 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 19:24:48,331 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:24:48,460 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:24:48,460 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:48,466 INFO ]: Computing forward predicates... [2018-06-22 19:24:48,998 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:24:49,019 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:24:49,019 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 19:24:49,019 INFO ]: Interpolant automaton has 13 states [2018-06-22 19:24:49,020 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 19:24:49,020 INFO ]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-06-22 19:24:49,020 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 19:24:49,339 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:24:49,340 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:24:49,340 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:24:49,340 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 19:24:49,340 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:24:49,341 INFO ]: With dead ends: 17 [2018-06-22 19:24:49,341 INFO ]: Without dead ends: 17 [2018-06-22 19:24:49,341 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:24:49,341 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:24:49,344 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:24:49,344 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:24:49,345 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:24:49,345 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:24:49,345 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:24:49,345 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:24:49,345 INFO ]: Interpolant automaton has 13 states. [2018-06-22 19:24:49,345 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:24:49,346 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:24:49,346 INFO ]: Found error trace [2018-06-22 19:24:49,346 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:24:49,346 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:24:49,346 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 19:24:49,346 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:24:49,346 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:24:49,347 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:49,347 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:24:49,347 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:49,498 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:49,947 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:24:49,947 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:24:49,947 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 19:24:49,962 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:24:50,104 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:24:50,104 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:50,111 INFO ]: Computing forward predicates... [2018-06-22 19:24:50,486 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:24:50,515 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:24:50,515 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 19:24:50,515 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:24:50,516 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:24:50,516 INFO ]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:24:50,516 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 19:24:51,009 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:24:51,009 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:24:51,010 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:24:51,010 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 19:24:51,010 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:24:51,011 INFO ]: With dead ends: 19 [2018-06-22 19:24:51,011 INFO ]: Without dead ends: 19 [2018-06-22 19:24:51,011 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2018-06-22 19:24:51,012 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:24:51,015 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:24:51,015 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:24:51,016 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:24:51,016 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:24:51,016 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:24:51,016 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:24:51,016 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:24:51,016 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:24:51,017 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:24:51,017 INFO ]: Found error trace [2018-06-22 19:24:51,017 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:24:51,017 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:24:51,017 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 19:24:51,017 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:24:51,017 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:24:51,018 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:51,018 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:24:51,018 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:51,153 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:51,755 WARN ]: Spent 199.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2018-06-22 19:24:52,090 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 43 [2018-06-22 19:24:52,491 WARN ]: Spent 211.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2018-06-22 19:24:52,796 WARN ]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 16 [2018-06-22 19:24:52,810 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:24:52,810 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:24:52,810 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 19:24:52,836 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:24:52,980 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:24:52,980 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:52,989 INFO ]: Computing forward predicates... [2018-06-22 19:24:53,274 INFO ]: Checked inductivity of 36 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 19:24:53,295 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:24:53,295 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-06-22 19:24:53,295 INFO ]: Interpolant automaton has 20 states [2018-06-22 19:24:53,295 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 19:24:53,295 INFO ]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2018-06-22 19:24:53,295 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 19:24:53,607 WARN ]: Spent 214.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2018-06-22 19:24:53,903 WARN ]: Spent 245.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 98 [2018-06-22 19:24:54,354 WARN ]: Spent 408.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 77 [2018-06-22 19:24:54,588 WARN ]: Spent 192.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 76 [2018-06-22 19:24:54,776 WARN ]: Spent 151.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2018-06-22 19:24:54,829 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:24:54,829 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 19:24:54,830 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 19:24:54,830 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 19:24:54,830 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:24:54,830 INFO ]: With dead ends: 21 [2018-06-22 19:24:54,830 INFO ]: Without dead ends: 21 [2018-06-22 19:24:54,831 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2018-06-22 19:24:54,831 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 19:24:54,834 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 19:24:54,834 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 19:24:54,835 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 19:24:54,835 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 19:24:54,835 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:24:54,835 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 19:24:54,835 INFO ]: Interpolant automaton has 20 states. [2018-06-22 19:24:54,835 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 19:24:54,836 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 19:24:54,836 INFO ]: Found error trace [2018-06-22 19:24:54,836 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:24:54,836 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:24:54,836 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 19:24:54,836 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:24:54,836 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:24:54,837 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:54,837 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:24:54,837 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:24:55,050 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:24:55,894 WARN ]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:24:57,575 WARN ]: Spent 1.61 s on a formula simplification. DAG size of input: 62 DAG size of output: 21 [2018-06-22 19:24:58,943 WARN ]: Spent 1.31 s on a formula simplification. DAG size of input: 238 DAG size of output: 51 [2018-06-22 19:24:59,906 WARN ]: Spent 806.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 56 [2018-06-22 19:25:00,139 WARN ]: Spent 194.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 29 [2018-06-22 19:25:01,614 WARN ]: Spent 1.20 s on a formula simplification. DAG size of input: 320 DAG size of output: 44 [2018-06-22 19:25:03,397 WARN ]: Spent 1.45 s on a formula simplification. DAG size of input: 260 DAG size of output: 34 [2018-06-22 19:25:03,512 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 19:25:03,512 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:25:03,512 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 19:25:03,518 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 19:25:03,751 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 19:25:03,751 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:25:03,760 INFO ]: Computing forward predicates... [2018-06-22 19:25:04,603 INFO ]: Checked inductivity of 55 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 19:25:04,624 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:25:04,624 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2018-06-22 19:25:04,625 INFO ]: Interpolant automaton has 24 states [2018-06-22 19:25:04,625 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 19:25:04,625 INFO ]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2018-06-22 19:25:04,625 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 24 states. [2018-06-22 19:25:04,876 WARN ]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2018-06-22 19:25:05,132 WARN ]: Spent 203.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 96 [2018-06-22 19:25:05,521 WARN ]: Spent 239.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 111 [2018-06-22 19:25:05,765 WARN ]: Spent 207.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 99 [2018-06-22 19:25:05,980 WARN ]: Spent 174.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2018-06-22 19:25:06,201 WARN ]: Spent 177.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2018-06-22 19:25:06,250 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:25:06,250 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 19:25:06,251 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 19:25:06,251 INFO ]: Start accepts. Automaton has 24 states. Word has length 29 [2018-06-22 19:25:06,251 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:25:06,251 INFO ]: With dead ends: 23 [2018-06-22 19:25:06,251 INFO ]: Without dead ends: 23 [2018-06-22 19:25:06,252 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=177, Invalid=753, Unknown=0, NotChecked=0, Total=930 [2018-06-22 19:25:06,252 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 19:25:06,255 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 19:25:06,255 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 19:25:06,256 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 19:25:06,256 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-22 19:25:06,256 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:25:06,256 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 19:25:06,256 INFO ]: Interpolant automaton has 24 states. [2018-06-22 19:25:06,256 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 19:25:06,257 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 19:25:06,257 INFO ]: Found error trace [2018-06-22 19:25:06,257 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:25:06,257 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:25:06,257 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 6 times [2018-06-22 19:25:06,257 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:25:06,257 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:25:06,258 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:25:06,258 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:25:06,258 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:25:07,529 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:25:09,452 WARN ]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:25:12,592 WARN ]: Spent 2.94 s on a formula simplification. DAG size of input: 417 DAG size of output: 33 [2018-06-22 19:25:16,798 WARN ]: Spent 4.01 s on a formula simplification. DAG size of input: 514 DAG size of output: 50 [2018-06-22 19:25:19,355 WARN ]: Spent 1.98 s on a formula simplification. DAG size of input: 409 DAG size of output: 48 [2018-06-22 19:25:21,026 WARN ]: Spent 1.50 s on a formula simplification. DAG size of input: 395 DAG size of output: 31 [2018-06-22 19:25:26,254 WARN ]: Spent 4.91 s on a formula simplification. DAG size of input: 891 DAG size of output: 56 [2018-06-22 19:25:33,506 WARN ]: Spent 6.78 s on a formula simplification. DAG size of input: 1385 DAG size of output: 36 [2018-06-22 19:25:50,460 WARN ]: Spent 16.05 s on a formula simplification. DAG size of input: 1159 DAG size of output: 27 Received shutdown request... [2018-06-22 19:25:50,977 WARN ]: Removed 23 from assertion stack [2018-06-22 19:25:50,978 WARN ]: Verification canceled [2018-06-22 19:25:50,981 WARN ]: Timeout [2018-06-22 19:25:50,981 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:25:50 BoogieIcfgContainer [2018-06-22 19:25:50,981 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:25:50,982 INFO ]: Toolchain (without parser) took 66040.60 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 246.6 MB in the beginning and 1.2 GB in the end (delta: -945.0 MB). Peak memory consumption was 237.3 MB. Max. memory is 3.6 GB. [2018-06-22 19:25:50,983 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 306.2 MB. Free memory is still 270.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:25:50,983 INFO ]: ChcToBoogie took 59.55 ms. Allocated memory is still 306.2 MB. Free memory was 246.6 MB in the beginning and 244.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:25:50,983 INFO ]: Boogie Preprocessor took 66.85 ms. Allocated memory is still 306.2 MB. Free memory was 244.6 MB in the beginning and 242.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:25:50,983 INFO ]: RCFGBuilder took 405.51 ms. Allocated memory is still 306.2 MB. Free memory was 242.6 MB in the beginning and 218.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:25:50,984 INFO ]: TraceAbstraction took 65500.88 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 218.7 MB in the beginning and 1.2 GB in the end (delta: -973.2 MB). Peak memory consumption was 209.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:25:50,986 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 306.2 MB. Free memory is still 270.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 59.55 ms. Allocated memory is still 306.2 MB. Free memory was 246.6 MB in the beginning and 244.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 66.85 ms. Allocated memory is still 306.2 MB. Free memory was 244.6 MB in the beginning and 242.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 405.51 ms. Allocated memory is still 306.2 MB. Free memory was 242.6 MB in the beginning and 218.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65500.88 ms. Allocated memory was 306.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 218.7 MB in the beginning and 1.2 GB in the end (delta: -973.2 MB). Peak memory consumption was 209.1 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 7, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 342. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 65.4s OverallTime, 7 OverallIterations, 7 TraceHistogramMax, 4.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 65 SDtfs, 123 SDslu, 427 SDs, 0 SdLazy, 331 SolverSat, 162 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=6, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 55276 SizeOfPredicates, 136 NumberOfNonLiveVariables, 4435 ConjunctsInSsa, 172 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 72/250 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_4_e3_1091_e1_1044.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-25-50-995.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_4_e3_1091_e1_1044.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-25-50-995.csv Completed graceful shutdown