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/ctigar/up5.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 15:45:03,396 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 15:45:03,400 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 15:45:03,413 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 15:45:03,413 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 15:45:03,416 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 15:45:03,418 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 15:45:03,420 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 15:45:03,422 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 15:45:03,425 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 15:45:03,426 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 15:45:03,426 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 15:45:03,427 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 15:45:03,428 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 15:45:03,431 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 15:45:03,432 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 15:45:03,434 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 15:45:03,436 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 15:45:03,438 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 15:45:03,439 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 15:45:03,440 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 15:45:03,443 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 15:45:03,443 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 15:45:03,443 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 15:45:03,444 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 15:45:03,445 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 15:45:03,446 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 15:45:03,447 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 15:45:03,448 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 15:45:03,448 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 15:45:03,449 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 15:45:03,450 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 15:45:03,450 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 15:45:03,451 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 15:45:03,451 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 15:45:03,452 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 15:45:03,477 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 15:45:03,477 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 15:45:03,478 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 15:45:03,478 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 15:45:03,479 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 15:45:03,479 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 15:45:03,479 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 15:45:03,480 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 15:45:03,480 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 15:45:03,480 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 15:45:03,480 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:45:03,480 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 15:45:03,483 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 15:45:03,483 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 15:45:03,483 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 15:45:03,483 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 15:45:03,484 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 15:45:03,484 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 15:45:03,484 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 15:45:03,485 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 15:45:03,486 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 15:45:03,528 INFO ]: Repository-Root is: /tmp [2018-06-22 15:45:03,542 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 15:45:03,550 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 15:45:03,552 INFO ]: Initializing SmtParser... [2018-06-22 15:45:03,552 INFO ]: SmtParser initialized [2018-06-22 15:45:03,553 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/up5.c.smt2 [2018-06-22 15:45:03,554 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 15:45:03,648 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/up5.c.smt2 unknown [2018-06-22 15:45:03,921 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/up5.c.smt2 [2018-06-22 15:45:03,926 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 15:45:03,933 INFO ]: Walking toolchain with 4 elements. [2018-06-22 15:45:03,933 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 15:45:03,933 INFO ]: Initializing ChcToBoogie... [2018-06-22 15:45:03,933 INFO ]: ChcToBoogie initialized [2018-06-22 15:45:03,937 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:45:03" (1/1) ... [2018-06-22 15:45:03,982 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:45:03 Unit [2018-06-22 15:45:03,982 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 15:45:03,982 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 15:45:03,982 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 15:45:03,982 INFO ]: Boogie Preprocessor initialized [2018-06-22 15:45:04,000 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:45:03" (1/1) ... [2018-06-22 15:45:04,001 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:45:03" (1/1) ... [2018-06-22 15:45:04,020 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:45:03" (1/1) ... [2018-06-22 15:45:04,020 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:45:03" (1/1) ... [2018-06-22 15:45:04,023 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:45:03" (1/1) ... [2018-06-22 15:45:04,025 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:45:03" (1/1) ... [2018-06-22 15:45:04,026 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:45:03" (1/1) ... [2018-06-22 15:45:04,028 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 15:45:04,037 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 15:45:04,037 INFO ]: Initializing RCFGBuilder... [2018-06-22 15:45:04,037 INFO ]: RCFGBuilder initialized [2018-06-22 15:45:04,038 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:45:03" (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 15:45:04,054 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 15:45:04,054 INFO ]: Found specification of procedure False [2018-06-22 15:45:04,054 INFO ]: Found implementation of procedure False [2018-06-22 15:45:04,054 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 15:45:04,054 INFO ]: Found specification of procedure state [2018-06-22 15:45:04,054 INFO ]: Found implementation of procedure state [2018-06-22 15:45:04,054 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 15:45:04,054 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 15:45:04,054 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 15:45:04,296 INFO ]: Using library mode [2018-06-22 15:45:04,296 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:45:04 BoogieIcfgContainer [2018-06-22 15:45:04,296 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 15:45:04,298 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 15:45:04,298 INFO ]: Initializing TraceAbstraction... [2018-06-22 15:45:04,302 INFO ]: TraceAbstraction initialized [2018-06-22 15:45:04,302 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 03:45:03" (1/3) ... [2018-06-22 15:45:04,303 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3895862a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 03:45:04, skipping insertion in model container [2018-06-22 15:45:04,303 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 03:45:03" (2/3) ... [2018-06-22 15:45:04,304 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3895862a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 03:45:04, skipping insertion in model container [2018-06-22 15:45:04,304 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 03:45:04" (3/3) ... [2018-06-22 15:45:04,306 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 15:45:04,314 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 15:45:04,322 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 15:45:04,364 INFO ]: Using default assertion order modulation [2018-06-22 15:45:04,365 INFO ]: Interprodecural is true [2018-06-22 15:45:04,365 INFO ]: Hoare is false [2018-06-22 15:45:04,365 INFO ]: Compute interpolants for FPandBP [2018-06-22 15:45:04,365 INFO ]: Backedges is TWOTRACK [2018-06-22 15:45:04,365 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 15:45:04,365 INFO ]: Difference is false [2018-06-22 15:45:04,365 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 15:45:04,365 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 15:45:04,384 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 15:45:04,395 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 15:45:04,395 INFO ]: Found error trace [2018-06-22 15:45:04,396 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:45:04,396 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:45:04,400 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 15:45:04,402 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:45:04,402 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:45:04,441 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:04,441 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:45:04,441 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:04,469 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:04,559 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 15:45:04,561 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 15:45:04,561 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 15:45:04,563 INFO ]: Interpolant automaton has 4 states [2018-06-22 15:45:04,581 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 15:45:04,581 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 15:45:04,585 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 15:45:04,667 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:45:04,668 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 15:45:04,668 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 15:45:04,670 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 15:45:04,670 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:45:04,682 INFO ]: With dead ends: 13 [2018-06-22 15:45:04,682 INFO ]: Without dead ends: 13 [2018-06-22 15:45:04,683 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 15:45:04,698 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 15:45:04,718 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 15:45:04,719 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 15:45:04,720 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 15:45:04,720 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 15:45:04,721 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:45:04,721 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 15:45:04,721 INFO ]: Interpolant automaton has 4 states. [2018-06-22 15:45:04,721 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 15:45:04,722 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 15:45:04,722 INFO ]: Found error trace [2018-06-22 15:45:04,722 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:45:04,722 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:45:04,722 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 15:45:04,722 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:45:04,722 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:45:04,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:04,723 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:45:04,723 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:04,759 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:04,985 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:45:04,986 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:45:04,986 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 15:45:04,995 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:45:05,041 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:05,050 INFO ]: Computing forward predicates... [2018-06-22 15:45:05,312 WARN ]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 15:45:05,427 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 15:45:05,449 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:45:05,449 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 15:45:05,449 INFO ]: Interpolant automaton has 9 states [2018-06-22 15:45:05,450 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 15:45:05,450 INFO ]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-06-22 15:45:05,450 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 15:45:05,849 WARN ]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 15:45:06,080 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:45:06,080 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 15:45:06,080 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 15:45:06,081 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 15:45:06,081 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:45:06,081 INFO ]: With dead ends: 15 [2018-06-22 15:45:06,081 INFO ]: Without dead ends: 15 [2018-06-22 15:45:06,082 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:45:06,082 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 15:45:06,085 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 15:45:06,085 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 15:45:06,086 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 15:45:06,086 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 15:45:06,086 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:45:06,086 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 15:45:06,086 INFO ]: Interpolant automaton has 9 states. [2018-06-22 15:45:06,086 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 15:45:06,087 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 15:45:06,087 INFO ]: Found error trace [2018-06-22 15:45:06,087 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:45:06,087 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:45:06,087 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 15:45:06,088 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:45:06,088 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:45:06,089 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:06,089 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:45:06,089 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:06,130 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:06,521 WARN ]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-22 15:45:06,645 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:45:06,645 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:45:06,645 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 15:45:06,652 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:45:06,685 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:45:06,685 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:06,688 INFO ]: Computing forward predicates... [2018-06-22 15:45:07,090 WARN ]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 15:45:07,725 WARN ]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 15:45:07,754 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 15:45:07,778 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:45:07,778 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-22 15:45:07,778 INFO ]: Interpolant automaton has 11 states [2018-06-22 15:45:07,778 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 15:45:07,778 INFO ]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-06-22 15:45:07,778 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-22 15:45:08,135 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:45:08,135 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 15:45:08,136 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 15:45:08,136 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 15:45:08,136 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:45:08,137 INFO ]: With dead ends: 17 [2018-06-22 15:45:08,137 INFO ]: Without dead ends: 17 [2018-06-22 15:45:08,137 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-06-22 15:45:08,137 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 15:45:08,140 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 15:45:08,140 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 15:45:08,140 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 15:45:08,140 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 15:45:08,140 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:45:08,140 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 15:45:08,141 INFO ]: Interpolant automaton has 11 states. [2018-06-22 15:45:08,141 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 15:45:08,141 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 15:45:08,141 INFO ]: Found error trace [2018-06-22 15:45:08,141 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:45:08,141 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:45:08,141 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 15:45:08,142 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:45:08,142 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:45:08,142 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:08,142 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:45:08,142 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:08,170 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:08,533 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:45:08,533 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:45:08,533 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 15:45:08,541 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 15:45:08,578 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 15:45:08,579 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:08,582 INFO ]: Computing forward predicates... [2018-06-22 15:45:08,976 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 15:45:09,011 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:45:09,011 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2018-06-22 15:45:09,012 INFO ]: Interpolant automaton has 12 states [2018-06-22 15:45:09,012 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 15:45:09,012 INFO ]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-06-22 15:45:09,012 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 12 states. [2018-06-22 15:45:09,347 WARN ]: Spent 217.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2018-06-22 15:45:09,656 WARN ]: Spent 145.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2018-06-22 15:45:09,686 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:45:09,686 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 15:45:09,687 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 15:45:09,687 INFO ]: Start accepts. Automaton has 12 states. Word has length 21 [2018-06-22 15:45:09,687 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:45:09,688 INFO ]: With dead ends: 19 [2018-06-22 15:45:09,688 INFO ]: Without dead ends: 19 [2018-06-22 15:45:09,688 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:45:09,688 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 15:45:09,691 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 15:45:09,691 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 15:45:09,692 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 15:45:09,692 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 15:45:09,692 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:45:09,692 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 15:45:09,692 INFO ]: Interpolant automaton has 12 states. [2018-06-22 15:45:09,692 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 15:45:09,693 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 15:45:09,693 INFO ]: Found error trace [2018-06-22 15:45:09,693 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:45:09,693 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:45:09,693 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 15:45:09,693 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:45:09,693 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:45:09,694 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:09,694 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:45:09,694 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:09,741 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:10,279 WARN ]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-22 15:45:10,423 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:45:10,423 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:45:10,423 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 15:45:10,429 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 15:45:10,456 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 15:45:10,456 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:10,492 INFO ]: Computing forward predicates... [2018-06-22 15:45:11,043 WARN ]: Spent 366.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 22 [2018-06-22 15:45:11,301 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 15:45:11,323 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:45:11,323 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2018-06-22 15:45:11,323 INFO ]: Interpolant automaton has 16 states [2018-06-22 15:45:11,323 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 15:45:11,323 INFO ]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2018-06-22 15:45:11,323 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 16 states. [2018-06-22 15:45:11,560 WARN ]: Spent 190.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2018-06-22 15:45:11,753 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 25 [2018-06-22 15:45:11,892 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 25 [2018-06-22 15:45:12,011 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 25 [2018-06-22 15:45:12,045 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:45:12,045 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 15:45:12,050 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 15:45:12,050 INFO ]: Start accepts. Automaton has 16 states. Word has length 25 [2018-06-22 15:45:12,050 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:45:12,051 INFO ]: With dead ends: 21 [2018-06-22 15:45:12,051 INFO ]: Without dead ends: 21 [2018-06-22 15:45:12,051 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2018-06-22 15:45:12,051 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 15:45:12,054 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 15:45:12,054 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 15:45:12,055 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 15:45:12,055 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 15:45:12,056 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:45:12,056 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 15:45:12,056 INFO ]: Interpolant automaton has 16 states. [2018-06-22 15:45:12,056 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 15:45:12,057 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 15:45:12,057 INFO ]: Found error trace [2018-06-22 15:45:12,057 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:45:12,057 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:45:12,057 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 15:45:12,057 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:45:12,057 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:45:12,058 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:12,058 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:45:12,058 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:12,133 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:12,480 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2018-06-22 15:45:12,714 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2018-06-22 15:45:12,961 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:45:12,961 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:45:12,961 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 15:45:12,969 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 15:45:13,068 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 15:45:13,068 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:13,073 INFO ]: Computing forward predicates... [2018-06-22 15:45:20,573 WARN ]: Spent 6.24 s on a formula simplification. DAG size of input: 481 DAG size of output: 62 [2018-06-22 15:45:22,572 WARN ]: Spent 1.50 s on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2018-06-22 15:45:24,678 WARN ]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 15:45:24,722 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 15:45:24,755 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:45:24,755 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2018-06-22 15:45:24,755 INFO ]: Interpolant automaton has 24 states [2018-06-22 15:45:24,755 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 15:45:24,756 INFO ]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2018-06-22 15:45:24,756 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 24 states. [2018-06-22 15:45:26,442 WARN ]: Spent 1.19 s on a formula simplification. DAG size of input: 117 DAG size of output: 80 [2018-06-22 15:45:26,815 WARN ]: Spent 322.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 22 [2018-06-22 15:45:27,333 WARN ]: Spent 483.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 40 [2018-06-22 15:45:27,708 WARN ]: Spent 335.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 46 [2018-06-22 15:45:28,091 WARN ]: Spent 327.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 36 [2018-06-22 15:45:28,379 WARN ]: Spent 246.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 25 [2018-06-22 15:45:29,441 WARN ]: Spent 881.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2018-06-22 15:45:29,595 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:45:29,595 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 15:45:29,595 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 15:45:29,595 INFO ]: Start accepts. Automaton has 24 states. Word has length 29 [2018-06-22 15:45:29,596 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:45:29,596 INFO ]: With dead ends: 25 [2018-06-22 15:45:29,596 INFO ]: Without dead ends: 25 [2018-06-22 15:45:29,597 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2018-06-22 15:45:29,597 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 15:45:29,601 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 15:45:29,601 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 15:45:29,601 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 15:45:29,602 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 29 [2018-06-22 15:45:29,602 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:45:29,602 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 15:45:29,602 INFO ]: Interpolant automaton has 24 states. [2018-06-22 15:45:29,602 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 15:45:29,603 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 15:45:29,603 INFO ]: Found error trace [2018-06-22 15:45:29,603 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:45:29,603 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:45:29,603 INFO ]: Analyzing trace with hash -1494134477, now seen corresponding path program 6 times [2018-06-22 15:45:29,603 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:45:29,603 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:45:29,604 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:29,604 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:45:29,604 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:29,702 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:30,380 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 15:45:30,381 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:45:30,381 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 15:45:30,396 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:45:30,475 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-06-22 15:45:30,475 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:30,480 INFO ]: Computing forward predicates... [2018-06-22 15:45:30,718 WARN ]: Spent 186.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2018-06-22 15:45:30,874 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2018-06-22 15:45:32,074 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 15:45:32,094 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:45:32,094 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 29 [2018-06-22 15:45:32,095 INFO ]: Interpolant automaton has 29 states [2018-06-22 15:45:32,095 INFO ]: Constructing interpolant automaton starting with 29 interpolants. [2018-06-22 15:45:32,095 INFO ]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2018-06-22 15:45:32,096 INFO ]: Start difference. First operand 25 states and 26 transitions. Second operand 29 states. [2018-06-22 15:45:32,635 WARN ]: Spent 475.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2018-06-22 15:45:32,807 WARN ]: Spent 137.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 22 [2018-06-22 15:45:33,094 WARN ]: Spent 255.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 35 [2018-06-22 15:45:33,378 WARN ]: Spent 232.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 34 [2018-06-22 15:45:33,670 WARN ]: Spent 260.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 29 [2018-06-22 15:45:34,141 WARN ]: Spent 436.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 29 [2018-06-22 15:45:35,019 WARN ]: Spent 822.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 34 [2018-06-22 15:45:35,586 WARN ]: Spent 529.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2018-06-22 15:45:35,628 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:45:35,628 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-22 15:45:35,629 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 15:45:35,629 INFO ]: Start accepts. Automaton has 29 states. Word has length 37 [2018-06-22 15:45:35,629 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:45:35,630 INFO ]: With dead ends: 27 [2018-06-22 15:45:35,630 INFO ]: Without dead ends: 27 [2018-06-22 15:45:35,631 INFO ]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=252, Invalid=1080, Unknown=0, NotChecked=0, Total=1332 [2018-06-22 15:45:35,631 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 15:45:35,634 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 15:45:35,634 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 15:45:35,636 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-22 15:45:35,636 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 37 [2018-06-22 15:45:35,636 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:45:35,636 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-22 15:45:35,636 INFO ]: Interpolant automaton has 29 states. [2018-06-22 15:45:35,636 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-22 15:45:35,637 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 15:45:35,637 INFO ]: Found error trace [2018-06-22 15:45:35,637 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:45:35,637 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:45:35,637 INFO ]: Analyzing trace with hash 1618126293, now seen corresponding path program 7 times [2018-06-22 15:45:35,638 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:45:35,638 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:45:35,638 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:35,638 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 15:45:35,638 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:35,739 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:36,001 WARN ]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 15:45:36,808 WARN ]: Spent 756.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-06-22 15:45:37,266 WARN ]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-06-22 15:45:37,904 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 15:45:37,904 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:45:37,904 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:45:37,911 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:45:37,961 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:37,967 INFO ]: Computing forward predicates... [2018-06-22 15:45:41,747 WARN ]: Spent 3.08 s on a formula simplification. DAG size of input: 431 DAG size of output: 55 [2018-06-22 15:45:42,557 WARN ]: Spent 587.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 36 [2018-06-22 15:45:42,719 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2018-06-22 15:45:43,932 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 15:45:43,953 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:45:43,953 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 34 [2018-06-22 15:45:43,953 INFO ]: Interpolant automaton has 34 states [2018-06-22 15:45:43,954 INFO ]: Constructing interpolant automaton starting with 34 interpolants. [2018-06-22 15:45:43,954 INFO ]: CoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2018-06-22 15:45:43,954 INFO ]: Start difference. First operand 27 states and 28 transitions. Second operand 34 states. [2018-06-22 15:45:45,138 WARN ]: Spent 1.01 s on a formula simplification. DAG size of input: 140 DAG size of output: 76 [2018-06-22 15:45:45,348 WARN ]: Spent 155.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 22 [2018-06-22 15:45:45,705 WARN ]: Spent 321.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 34 [2018-06-22 15:45:46,041 WARN ]: Spent 298.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 35 [2018-06-22 15:45:46,450 WARN ]: Spent 372.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 25 [2018-06-22 15:45:46,961 WARN ]: Spent 454.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 30 [2018-06-22 15:45:47,538 WARN ]: Spent 534.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 36 [2018-06-22 15:45:48,081 WARN ]: Spent 380.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 39 [2018-06-22 15:45:48,697 WARN ]: Spent 551.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 67 [2018-06-22 15:45:48,818 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 15:45:48,818 INFO ]: Finished difference Result 29 states and 30 transitions. [2018-06-22 15:45:48,819 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 15:45:48,819 INFO ]: Start accepts. Automaton has 34 states. Word has length 41 [2018-06-22 15:45:48,820 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 15:45:48,821 INFO ]: With dead ends: 29 [2018-06-22 15:45:48,821 INFO ]: Without dead ends: 29 [2018-06-22 15:45:48,822 INFO ]: 0 DeclaredPredicates, 69 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=327, Invalid=1479, Unknown=0, NotChecked=0, Total=1806 [2018-06-22 15:45:48,822 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 15:45:48,826 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-22 15:45:48,826 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 15:45:48,827 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-06-22 15:45:48,827 INFO ]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 41 [2018-06-22 15:45:48,827 INFO ]: Finished accepts. word is rejected. [2018-06-22 15:45:48,827 INFO ]: Abstraction has 29 states and 30 transitions. [2018-06-22 15:45:48,827 INFO ]: Interpolant automaton has 34 states. [2018-06-22 15:45:48,827 INFO ]: Start isEmpty. Operand 29 states and 30 transitions. [2018-06-22 15:45:48,828 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 15:45:48,828 INFO ]: Found error trace [2018-06-22 15:45:48,828 INFO ]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 15:45:48,828 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 15:45:48,829 INFO ]: Analyzing trace with hash 996918775, now seen corresponding path program 8 times [2018-06-22 15:45:48,829 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 15:45:48,829 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 15:45:48,829 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:48,829 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 15:45:48,829 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 15:45:48,904 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:49,901 INFO ]: Checked inductivity of 171 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 15:45:49,901 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 15:45:49,901 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 15:45:49,907 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 15:45:49,972 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 15:45:49,972 INFO ]: Conjunction of SSA is unsat [2018-06-22 15:45:49,984 INFO ]: Computing forward predicates... [2018-06-22 15:45:50,503 WARN ]: Spent 446.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2018-06-22 15:45:50,735 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2018-06-22 15:45:52,048 WARN ]: Spent 1.19 s on a formula simplification. DAG size of input: 147 DAG size of output: 65 [2018-06-22 15:45:52,236 WARN ]: Spent 145.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2018-06-22 15:45:52,679 WARN ]: Spent 397.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-06-22 15:45:52,837 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2018-06-22 15:45:57,491 INFO ]: Checked inductivity of 171 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 15:45:57,512 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 15:45:57,512 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 39 [2018-06-22 15:45:57,512 INFO ]: Interpolant automaton has 39 states [2018-06-22 15:45:57,512 INFO ]: Constructing interpolant automaton starting with 39 interpolants. [2018-06-22 15:45:57,513 INFO ]: CoverageRelationStatistics Valid=134, Invalid=1348, Unknown=0, NotChecked=0, Total=1482 [2018-06-22 15:45:57,513 INFO ]: Start difference. First operand 29 states and 30 transitions. Second operand 39 states. [2018-06-22 15:45:59,118 WARN ]: Spent 1.52 s on a formula simplification. DAG size of input: 176 DAG size of output: 122 [2018-06-22 15:45:59,604 WARN ]: Spent 372.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 37 [2018-06-22 15:46:00,476 WARN ]: Spent 818.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 43 [2018-06-22 15:46:01,052 WARN ]: Spent 503.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 40 [2018-06-22 15:46:01,592 WARN ]: Spent 464.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 50 [2018-06-22 15:46:02,460 WARN ]: Spent 817.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 54 [2018-06-22 15:46:03,174 WARN ]: Spent 661.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 59 [2018-06-22 15:46:03,915 WARN ]: Spent 676.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 52 Received shutdown request... [2018-06-22 15:46:04,105 WARN ]: Removed 6 from assertion stack [2018-06-22 15:46:04,105 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 15:46:04,105 WARN ]: Verification canceled [2018-06-22 15:46:04,109 WARN ]: Timeout [2018-06-22 15:46:04,109 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 03:46:04 BoogieIcfgContainer [2018-06-22 15:46:04,109 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 15:46:04,110 INFO ]: Toolchain (without parser) took 60183.64 ms. Allocated memory was 308.8 MB in the beginning and 716.2 MB in the end (delta: 407.4 MB). Free memory was 263.3 MB in the beginning and 505.9 MB in the end (delta: -242.6 MB). Peak memory consumption was 164.8 MB. Max. memory is 3.6 GB. [2018-06-22 15:46:04,111 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 15:46:04,111 INFO ]: ChcToBoogie took 48.84 ms. Allocated memory is still 308.8 MB. Free memory was 262.3 MB in the beginning and 261.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 15:46:04,116 INFO ]: Boogie Preprocessor took 45.64 ms. Allocated memory is still 308.8 MB. Free memory was 261.3 MB in the beginning and 259.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:46:04,116 INFO ]: RCFGBuilder took 259.56 ms. Allocated memory is still 308.8 MB. Free memory was 259.3 MB in the beginning and 251.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 15:46:04,117 INFO ]: TraceAbstraction took 59811.40 ms. Allocated memory was 308.8 MB in the beginning and 716.2 MB in the end (delta: 407.4 MB). Free memory was 250.3 MB in the beginning and 505.9 MB in the end (delta: -255.6 MB). Peak memory consumption was 151.8 MB. Max. memory is 3.6 GB. [2018-06-22 15:46:04,125 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 48.84 ms. Allocated memory is still 308.8 MB. Free memory was 262.3 MB in the beginning and 261.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * Boogie Preprocessor took 45.64 ms. Allocated memory is still 308.8 MB. Free memory was 261.3 MB in the beginning and 259.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 259.56 ms. Allocated memory is still 308.8 MB. Free memory was 259.3 MB in the beginning and 251.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 59811.40 ms. Allocated memory was 308.8 MB in the beginning and 716.2 MB in the end (delta: 407.4 MB). Free memory was 250.3 MB in the beginning and 505.9 MB in the end (delta: -255.6 MB). Peak memory consumption was 151.8 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 constructing difference of abstraction (29states) and interpolant automaton (currently 12 states, 39 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 185. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 59.7s OverallTime, 9 OverallIterations, 10 TraceHistogramMax, 22.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 115 SDtfs, 419 SDslu, 809 SDs, 0 SdLazy, 742 SolverSat, 506 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 166 SyntacticMatches, 8 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 47.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=8, 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 35.9s InterpolantComputationTime, 465 NumberOfCodeBlocks, 465 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 448 ConstructedInterpolants, 0 QuantifiedInterpolants, 1772000 SizeOfPredicates, 460 NumberOfNonLiveVariables, 1582 ConjunctsInSsa, 364 ConjunctsInUnsatCore, 17 InterpolantComputations, 1 PerfectInterpolantSequences, 288/1074 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/up5.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_15-46-04-178.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/up5.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_15-46-04-178.csv Completed graceful shutdown