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_3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:18:53,399 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:18:53,401 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:18:53,413 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:18:53,414 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:18:53,415 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:18:53,416 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:18:53,421 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:18:53,423 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:18:53,423 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:18:53,424 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:18:53,424 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:18:53,425 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:18:53,426 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:18:53,426 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:18:53,427 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:18:53,429 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:18:53,431 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:18:53,432 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:18:53,433 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:18:53,434 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:18:53,437 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:18:53,437 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:18:53,437 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:18:53,438 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:18:53,439 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:18:53,440 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:18:53,440 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:18:53,441 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:18:53,442 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:18:53,442 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:18:53,443 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:18:53,443 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:18:53,444 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:18:53,445 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:18:53,445 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 19:18:53,464 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:18:53,464 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:18:53,465 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:18:53,465 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:18:53,466 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:18:53,466 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:18:53,466 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:18:53,466 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:18:53,467 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:18:53,467 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:18:53,467 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:18:53,467 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:18:53,467 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:18:53,468 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:18:53,469 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:18:53,469 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:18:53,469 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:18:53,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:18:53,469 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:18:53,471 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:18:53,471 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:18:53,526 INFO ]: Repository-Root is: /tmp [2018-06-22 19:18:53,542 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:18:53,547 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:18:53,550 INFO ]: Initializing SmtParser... [2018-06-22 19:18:53,550 INFO ]: SmtParser initialized [2018-06-22 19:18:53,551 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3.smt2 [2018-06-22 19:18:53,552 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 19:18:53,644 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3.smt2 unknown [2018-06-22 19:18:54,044 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_3.smt2 [2018-06-22 19:18:54,049 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:18:54,062 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:18:54,062 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:18:54,062 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:18:54,063 INFO ]: ChcToBoogie initialized [2018-06-22 19:18:54,066 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:18:54" (1/1) ... [2018-06-22 19:18:54,150 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:18:54 Unit [2018-06-22 19:18:54,150 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:18:54,151 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:18:54,151 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:18:54,151 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:18:54,195 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:18:54" (1/1) ... [2018-06-22 19:18:54,195 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:18:54" (1/1) ... [2018-06-22 19:18:54,213 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:18:54" (1/1) ... [2018-06-22 19:18:54,213 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:18:54" (1/1) ... [2018-06-22 19:18:54,230 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:18:54" (1/1) ... [2018-06-22 19:18:54,232 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:18:54" (1/1) ... [2018-06-22 19:18:54,234 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:18:54" (1/1) ... [2018-06-22 19:18:54,237 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:18:54,241 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:18:54,241 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:18:54,241 INFO ]: RCFGBuilder initialized [2018-06-22 19:18:54,242 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:18:54" (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 19:18:54,259 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:18:54,259 INFO ]: Found specification of procedure False [2018-06-22 19:18:54,259 INFO ]: Found implementation of procedure False [2018-06-22 19:18:54,259 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:18:54,259 INFO ]: Found specification of procedure state [2018-06-22 19:18:54,259 INFO ]: Found implementation of procedure state [2018-06-22 19:18:54,259 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:18:54,259 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:18:54,259 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 19:18:54,575 INFO ]: Using library mode [2018-06-22 19:18:54,575 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:18:54 BoogieIcfgContainer [2018-06-22 19:18:54,575 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:18:54,577 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:18:54,577 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:18:54,583 INFO ]: TraceAbstraction initialized [2018-06-22 19:18:54,583 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:18:54" (1/3) ... [2018-06-22 19:18:54,584 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5511fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:18:54, skipping insertion in model container [2018-06-22 19:18:54,584 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:18:54" (2/3) ... [2018-06-22 19:18:54,584 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5511fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:18:54, skipping insertion in model container [2018-06-22 19:18:54,584 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:18:54" (3/3) ... [2018-06-22 19:18:54,587 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:18:54,596 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:18:54,607 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:18:54,653 INFO ]: Using default assertion order modulation [2018-06-22 19:18:54,653 INFO ]: Interprodecural is true [2018-06-22 19:18:54,653 INFO ]: Hoare is false [2018-06-22 19:18:54,653 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:18:54,653 INFO ]: Backedges is TWOTRACK [2018-06-22 19:18:54,653 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:18:54,653 INFO ]: Difference is false [2018-06-22 19:18:54,653 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:18:54,654 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:18:54,666 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:18:54,676 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:18:54,676 INFO ]: Found error trace [2018-06-22 19:18:54,678 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:18:54,678 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:18:54,684 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:18:54,686 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:18:54,686 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:18:54,725 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:18:54,725 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:18:54,725 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:18:54,845 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:18:54,992 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:18:54,994 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:18:54,994 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:18:54,995 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:18:55,005 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:18:55,005 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:18:55,007 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:18:55,126 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:18:55,126 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:18:55,127 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:18:55,128 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:18:55,128 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:18:55,136 INFO ]: With dead ends: 13 [2018-06-22 19:18:55,136 INFO ]: Without dead ends: 13 [2018-06-22 19:18:55,137 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 19:18:55,150 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:18:55,168 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:18:55,169 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:18:55,169 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:18:55,171 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:18:55,171 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:18:55,171 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:18:55,171 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:18:55,171 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:18:55,172 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:18:55,172 INFO ]: Found error trace [2018-06-22 19:18:55,172 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:18:55,172 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:18:55,172 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:18:55,172 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:18:55,173 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:18:55,173 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:18:55,173 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:18:55,173 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:18:55,255 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:18:55,417 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:18:55,417 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:18:55,417 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 19:18:55,424 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:18:55,547 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:18:55,557 INFO ]: Computing forward predicates... [2018-06-22 19:18:55,972 WARN ]: Spent 227.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-22 19:18:56,124 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:18:56,159 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:18:56,159 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 19:18:56,159 INFO ]: Interpolant automaton has 9 states [2018-06-22 19:18:56,160 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 19:18:56,160 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 19:18:56,160 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 19:18:56,630 WARN ]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 19:18:56,922 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:18:56,922 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:18:56,923 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:18:56,923 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 19:18:56,923 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:18:56,924 INFO ]: With dead ends: 15 [2018-06-22 19:18:56,924 INFO ]: Without dead ends: 15 [2018-06-22 19:18:56,925 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:18:56,925 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:18:56,928 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:18:56,928 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:18:56,928 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:18:56,928 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:18:56,929 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:18:56,929 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:18:56,929 INFO ]: Interpolant automaton has 9 states. [2018-06-22 19:18:56,929 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:18:56,931 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:18:56,931 INFO ]: Found error trace [2018-06-22 19:18:56,931 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:18:56,931 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:18:56,931 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:18:56,931 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:18:56,931 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:18:56,932 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:18:56,932 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:18:56,932 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:18:57,047 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:18:57,591 WARN ]: Spent 347.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-06-22 19:18:57,652 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:18:57,652 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:18:57,652 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 19:18:57,662 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:18:57,795 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:18:57,795 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:18:57,801 INFO ]: Computing forward predicates... [2018-06-22 19:18:58,107 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:18:58,132 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:18:58,132 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 19:18:58,133 INFO ]: Interpolant automaton has 13 states [2018-06-22 19:18:58,133 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 19:18:58,133 INFO ]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-06-22 19:18:58,133 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 19:18:58,408 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:18:58,408 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:18:58,410 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:18:58,410 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 19:18:58,410 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:18:58,410 INFO ]: With dead ends: 17 [2018-06-22 19:18:58,410 INFO ]: Without dead ends: 17 [2018-06-22 19:18:58,411 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 19:18:58,411 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:18:58,414 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:18:58,414 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:18:58,415 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:18:58,415 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:18:58,415 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:18:58,415 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:18:58,415 INFO ]: Interpolant automaton has 13 states. [2018-06-22 19:18:58,415 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:18:58,416 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:18:58,416 INFO ]: Found error trace [2018-06-22 19:18:58,416 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:18:58,416 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:18:58,416 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 19:18:58,416 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:18:58,416 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:18:58,417 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:18:58,417 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:18:58,417 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:18:58,521 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:18:58,946 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:18:58,946 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:18:58,946 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 19:18:58,963 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:18:59,082 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:18:59,082 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:18:59,089 INFO ]: Computing forward predicates... [2018-06-22 19:18:59,526 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:18:59,549 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:18:59,549 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 19:18:59,549 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:18:59,549 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:18:59,550 INFO ]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:18:59,550 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 19:18:59,901 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:18:59,902 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:18:59,902 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:18:59,902 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 19:18:59,902 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:18:59,902 INFO ]: With dead ends: 19 [2018-06-22 19:18:59,903 INFO ]: Without dead ends: 19 [2018-06-22 19:18:59,903 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2018-06-22 19:18:59,903 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:18:59,907 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:18:59,907 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:18:59,907 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:18:59,907 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:18:59,907 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:18:59,907 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:18:59,907 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:18:59,907 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:18:59,908 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:18:59,908 INFO ]: Found error trace [2018-06-22 19:18:59,908 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:18:59,909 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:18:59,909 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 19:18:59,909 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:18:59,909 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:18:59,909 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:18:59,909 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:18:59,909 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:19:00,090 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:19:00,521 WARN ]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:19:01,120 WARN ]: Spent 526.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 26 [2018-06-22 19:19:01,668 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:19:01,668 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:19:01,668 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 19:19:01,675 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:19:01,831 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:19:01,831 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:19:01,840 INFO ]: Computing forward predicates... [2018-06-22 19:19:02,279 INFO ]: Checked inductivity of 36 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 19:19:02,299 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:19:02,299 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-06-22 19:19:02,300 INFO ]: Interpolant automaton has 20 states [2018-06-22 19:19:02,300 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 19:19:02,300 INFO ]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2018-06-22 19:19:02,300 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 19:19:02,620 WARN ]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2018-06-22 19:19:02,818 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-06-22 19:19:03,078 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:19:03,078 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 19:19:03,079 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 19:19:03,079 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 19:19:03,079 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:19:03,079 INFO ]: With dead ends: 21 [2018-06-22 19:19:03,079 INFO ]: Without dead ends: 21 [2018-06-22 19:19:03,080 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2018-06-22 19:19:03,080 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 19:19:03,083 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 19:19:03,083 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 19:19:03,083 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 19:19:03,083 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 19:19:03,083 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:19:03,084 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 19:19:03,084 INFO ]: Interpolant automaton has 20 states. [2018-06-22 19:19:03,084 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 19:19:03,084 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 19:19:03,084 INFO ]: Found error trace [2018-06-22 19:19:03,084 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:19:03,085 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:19:03,085 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 19:19:03,085 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:19:03,085 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:19:03,085 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:19:03,085 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:19:03,085 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:19:03,353 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:19:04,108 WARN ]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:19:05,568 WARN ]: Spent 1.37 s on a formula simplification. DAG size of input: 179 DAG size of output: 13 [2018-06-22 19:19:05,865 WARN ]: Spent 185.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 23 [2018-06-22 19:19:06,341 WARN ]: Spent 375.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 25 [2018-06-22 19:19:06,795 WARN ]: Spent 301.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 21 [2018-06-22 19:19:07,094 WARN ]: Spent 237.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 19 [2018-06-22 19:19:07,458 WARN ]: Spent 273.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 23 [2018-06-22 19:19:07,897 WARN ]: Spent 355.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 20 [2018-06-22 19:19:08,444 WARN ]: Spent 245.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 10 [2018-06-22 19:19:08,458 INFO ]: Checked inductivity of 55 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 19:19:08,458 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:19:08,458 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 19:19:08,465 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 19:19:08,686 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 19:19:08,686 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:19:08,695 INFO ]: Computing forward predicates... [2018-06-22 19:19:09,167 INFO ]: Checked inductivity of 55 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 19:19:09,188 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:19:09,188 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2018-06-22 19:19:09,189 INFO ]: Interpolant automaton has 24 states [2018-06-22 19:19:09,189 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 19:19:09,189 INFO ]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2018-06-22 19:19:09,189 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 24 states. [2018-06-22 19:19:09,527 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-06-22 19:19:09,985 WARN ]: Spent 302.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2018-06-22 19:19:10,192 WARN ]: Spent 167.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2018-06-22 19:19:10,480 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:19:10,480 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 19:19:10,481 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 19:19:10,481 INFO ]: Start accepts. Automaton has 24 states. Word has length 29 [2018-06-22 19:19:10,481 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:19:10,482 INFO ]: With dead ends: 23 [2018-06-22 19:19:10,482 INFO ]: Without dead ends: 23 [2018-06-22 19:19:10,482 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2018-06-22 19:19:10,482 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 19:19:10,485 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 19:19:10,485 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 19:19:10,486 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 19:19:10,486 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-22 19:19:10,486 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:19:10,486 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 19:19:10,486 INFO ]: Interpolant automaton has 24 states. [2018-06-22 19:19:10,486 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 19:19:10,487 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 19:19:10,487 INFO ]: Found error trace [2018-06-22 19:19:10,487 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:19:10,487 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:19:10,487 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 6 times [2018-06-22 19:19:10,487 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:19:10,487 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:19:10,488 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:19:10,488 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:19:10,488 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:19:10,931 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:19:12,899 WARN ]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 19:19:19,118 WARN ]: Spent 5.76 s on a formula simplification. DAG size of input: 957 DAG size of output: 26 [2018-06-22 19:19:33,093 WARN ]: Spent 13.60 s on a formula simplification. DAG size of input: 411 DAG size of output: 28 [2018-06-22 19:19:33,790 WARN ]: Spent 366.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 20 [2018-06-22 19:19:38,486 WARN ]: Spent 4.46 s on a formula simplification. DAG size of input: 544 DAG size of output: 30 [2018-06-22 19:19:42,010 WARN ]: Spent 3.25 s on a formula simplification. DAG size of input: 542 DAG size of output: 28 [2018-06-22 19:19:45,507 WARN ]: Spent 3.19 s on a formula simplification. DAG size of input: 850 DAG size of output: 19 [2018-06-22 19:19:54,293 WARN ]: Spent 8.23 s on a formula simplification. DAG size of input: 1345 DAG size of output: 28 [2018-06-22 19:19:59,139 WARN ]: Spent 4.44 s on a formula simplification. DAG size of input: 1008 DAG size of output: 28 Received shutdown request... [2018-06-22 19:20:01,222 WARN ]: Removed 24 from assertion stack [2018-06-22 19:20:01,223 WARN ]: Verification canceled [2018-06-22 19:20:01,227 WARN ]: Timeout [2018-06-22 19:20:01,227 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:20:01 BoogieIcfgContainer [2018-06-22 19:20:01,227 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:20:01,228 INFO ]: Toolchain (without parser) took 67179.15 ms. Allocated memory was 307.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 247.6 MB in the beginning and 1.1 GB in the end (delta: -816.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:20:01,229 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:20:01,229 INFO ]: ChcToBoogie took 87.87 ms. Allocated memory is still 307.2 MB. Free memory was 247.6 MB in the beginning and 245.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:20:01,230 INFO ]: Boogie Preprocessor took 86.59 ms. Allocated memory is still 307.2 MB. Free memory was 245.6 MB in the beginning and 243.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:20:01,230 INFO ]: RCFGBuilder took 334.03 ms. Allocated memory is still 307.2 MB. Free memory was 243.7 MB in the beginning and 219.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:20:01,230 INFO ]: TraceAbstraction took 66650.55 ms. Allocated memory was 307.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 219.7 MB in the beginning and 1.1 GB in the end (delta: -844.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 19:20:01,232 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 87.87 ms. Allocated memory is still 307.2 MB. Free memory was 247.6 MB in the beginning and 245.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 86.59 ms. Allocated memory is still 307.2 MB. Free memory was 245.6 MB in the beginning and 243.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 334.03 ms. Allocated memory is still 307.2 MB. Free memory was 243.7 MB in the beginning and 219.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 66650.55 ms. Allocated memory was 307.2 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 219.7 MB in the beginning and 1.1 GB in the end (delta: -844.1 MB). Peak memory consumption was 1.3 GB. 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 882. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 66.5s OverallTime, 7 OverallIterations, 7 TraceHistogramMax, 3.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 67 SDtfs, 123 SDslu, 427 SDs, 0 SdLazy, 341 SolverSat, 163 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 10.1s 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, 10.2s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 32384 SizeOfPredicates, 141 NumberOfNonLiveVariables, 4435 ConjunctsInSsa, 184 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 73/250 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_3.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-20-01-249.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_3.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-20-01-249.csv Completed graceful shutdown