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/dillig17.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:56:50,446 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:56:50,448 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:56:50,460 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:56:50,461 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:56:50,462 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:56:50,464 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:56:50,469 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:56:50,471 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:56:50,472 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:56:50,473 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:56:50,473 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:56:50,474 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:56:50,475 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:56:50,475 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:56:50,482 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:56:50,483 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:56:50,485 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:56:50,495 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:56:50,496 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:56:50,497 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:56:50,499 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:56:50,500 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:56:50,500 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:56:50,501 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:56:50,501 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:56:50,506 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:56:50,507 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:56:50,508 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:56:50,508 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:56:50,508 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:56:50,509 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:56:50,509 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:56:50,514 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:56:50,514 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:56:50,515 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 14:56:50,538 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:56:50,538 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:56:50,538 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:56:50,538 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:56:50,539 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:56:50,539 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:56:50,540 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:56:50,540 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:56:50,540 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:56:50,540 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:56:50,540 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:56:50,541 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:56:50,544 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:56:50,544 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:56:50,545 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:56:50,545 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:56:50,545 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:56:50,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:56:50,545 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:56:50,547 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:56:50,547 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:56:50,605 INFO ]: Repository-Root is: /tmp [2018-06-22 14:56:50,621 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:56:50,626 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:56:50,627 INFO ]: Initializing SmtParser... [2018-06-22 14:56:50,628 INFO ]: SmtParser initialized [2018-06-22 14:56:50,628 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig17.c.smt2 [2018-06-22 14:56:50,629 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 14:56:50,720 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig17.c.smt2 unknown [2018-06-22 14:56:50,963 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig17.c.smt2 [2018-06-22 14:56:50,966 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:56:50,971 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:56:50,971 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:56:50,971 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:56:50,972 INFO ]: ChcToBoogie initialized [2018-06-22 14:56:50,975 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:56:50" (1/1) ... [2018-06-22 14:56:51,028 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:56:51 Unit [2018-06-22 14:56:51,028 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:56:51,031 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:56:51,031 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:56:51,031 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:56:51,054 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:56:51" (1/1) ... [2018-06-22 14:56:51,054 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:56:51" (1/1) ... [2018-06-22 14:56:51,064 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:56:51" (1/1) ... [2018-06-22 14:56:51,065 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:56:51" (1/1) ... [2018-06-22 14:56:51,079 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:56:51" (1/1) ... [2018-06-22 14:56:51,080 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:56:51" (1/1) ... [2018-06-22 14:56:51,081 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:56:51" (1/1) ... [2018-06-22 14:56:51,083 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:56:51,084 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:56:51,084 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:56:51,084 INFO ]: RCFGBuilder initialized [2018-06-22 14:56:51,085 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:56:51" (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 14:56:51,118 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:56:51,118 INFO ]: Found specification of procedure False [2018-06-22 14:56:51,118 INFO ]: Found implementation of procedure False [2018-06-22 14:56:51,118 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:56:51,118 INFO ]: Found specification of procedure state [2018-06-22 14:56:51,118 INFO ]: Found implementation of procedure state [2018-06-22 14:56:51,118 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:56:51,118 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:56:51,118 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 14:56:51,385 INFO ]: Using library mode [2018-06-22 14:56:51,386 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:56:51 BoogieIcfgContainer [2018-06-22 14:56:51,386 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:56:51,387 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:56:51,387 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:56:51,390 INFO ]: TraceAbstraction initialized [2018-06-22 14:56:51,390 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:56:50" (1/3) ... [2018-06-22 14:56:51,391 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2e2cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:56:51, skipping insertion in model container [2018-06-22 14:56:51,391 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:56:51" (2/3) ... [2018-06-22 14:56:51,391 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2e2cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:56:51, skipping insertion in model container [2018-06-22 14:56:51,391 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:56:51" (3/3) ... [2018-06-22 14:56:51,393 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:56:51,402 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:56:51,410 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:56:51,452 INFO ]: Using default assertion order modulation [2018-06-22 14:56:51,453 INFO ]: Interprodecural is true [2018-06-22 14:56:51,453 INFO ]: Hoare is false [2018-06-22 14:56:51,453 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:56:51,453 INFO ]: Backedges is TWOTRACK [2018-06-22 14:56:51,453 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:56:51,453 INFO ]: Difference is false [2018-06-22 14:56:51,453 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:56:51,453 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:56:51,466 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:56:51,477 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:56:51,477 INFO ]: Found error trace [2018-06-22 14:56:51,478 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:56:51,478 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:56:51,483 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 14:56:51,485 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:56:51,485 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:56:51,533 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:56:51,533 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:56:51,533 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:56:51,559 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:56:51,642 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:56:51,644 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:56:51,644 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:56:51,645 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:56:51,656 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:56:51,656 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:56:51,658 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:56:51,771 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:56:51,771 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:56:51,772 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:56:51,774 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:56:51,774 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:56:51,788 INFO ]: With dead ends: 13 [2018-06-22 14:56:51,788 INFO ]: Without dead ends: 13 [2018-06-22 14:56:51,790 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 14:56:51,808 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:56:51,832 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:56:51,833 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:56:51,834 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:56:51,835 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:56:51,835 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:56:51,835 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:56:51,835 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:56:51,835 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:56:51,836 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:56:51,836 INFO ]: Found error trace [2018-06-22 14:56:51,836 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:56:51,836 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:56:51,837 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 14:56:51,837 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:56:51,837 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:56:51,837 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:56:51,837 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:56:51,837 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:56:51,874 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:56:52,095 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:56:52,095 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:56:52,095 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 14:56:52,105 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:56:52,147 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:56:52,158 INFO ]: Computing forward predicates... [2018-06-22 14:56:52,497 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:56:52,531 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:56:52,531 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-06-22 14:56:52,532 INFO ]: Interpolant automaton has 6 states [2018-06-22 14:56:52,532 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 14:56:52,532 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 14:56:52,532 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 6 states. [2018-06-22 14:56:52,701 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:56:52,701 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:56:52,702 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:56:52,702 INFO ]: Start accepts. Automaton has 6 states. Word has length 13 [2018-06-22 14:56:52,702 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:56:52,703 INFO ]: With dead ends: 15 [2018-06-22 14:56:52,703 INFO ]: Without dead ends: 15 [2018-06-22 14:56:52,704 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 14:56:52,704 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:56:52,708 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:56:52,708 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:56:52,709 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:56:52,709 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:56:52,709 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:56:52,709 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:56:52,709 INFO ]: Interpolant automaton has 6 states. [2018-06-22 14:56:52,709 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:56:52,709 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:56:52,709 INFO ]: Found error trace [2018-06-22 14:56:52,709 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:56:52,710 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:56:52,710 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 14:56:52,710 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:56:52,710 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:56:52,711 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:56:52,711 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:56:52,711 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:56:52,784 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:56:53,003 WARN ]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 14:56:53,226 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:56:53,226 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:56:53,226 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) [2018-06-22 14:56:53,275 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:56:53,343 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:56:53,343 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:56:53,346 INFO ]: Computing forward predicates... [2018-06-22 14:56:53,541 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:56:53,560 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:56:53,560 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-22 14:56:53,560 INFO ]: Interpolant automaton has 8 states [2018-06-22 14:56:53,560 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 14:56:53,560 INFO ]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-22 14:56:53,561 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-06-22 14:56:54,034 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 18 [2018-06-22 14:56:54,134 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:56:54,135 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:56:54,136 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:56:54,136 INFO ]: Start accepts. Automaton has 8 states. Word has length 17 [2018-06-22 14:56:54,136 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:56:54,137 INFO ]: With dead ends: 17 [2018-06-22 14:56:54,137 INFO ]: Without dead ends: 17 [2018-06-22 14:56:54,137 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-06-22 14:56:54,137 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:56:54,140 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:56:54,140 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:56:54,141 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:56:54,144 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 14:56:54,144 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:56:54,144 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:56:54,144 INFO ]: Interpolant automaton has 8 states. [2018-06-22 14:56:54,144 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:56:54,144 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:56:54,144 INFO ]: Found error trace [2018-06-22 14:56:54,145 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:56:54,145 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:56:54,145 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 14:56:54,145 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:56:54,145 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:56:54,146 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:56:54,146 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:56:54,146 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:56:54,202 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:56:54,882 WARN ]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-22 14:56:55,005 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:56:55,005 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:56:55,005 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 14:56:55,021 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:56:55,053 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 14:56:55,054 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:56:55,057 INFO ]: Computing forward predicates... [2018-06-22 14:56:55,291 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:56:55,314 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:56:55,314 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2018-06-22 14:56:55,315 INFO ]: Interpolant automaton has 13 states [2018-06-22 14:56:55,315 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 14:56:55,315 INFO ]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:56:55,315 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 13 states. [2018-06-22 14:56:55,655 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:56:55,655 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 14:56:55,657 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 14:56:55,657 INFO ]: Start accepts. Automaton has 13 states. Word has length 21 [2018-06-22 14:56:55,657 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:56:55,657 INFO ]: With dead ends: 19 [2018-06-22 14:56:55,657 INFO ]: Without dead ends: 19 [2018-06-22 14:56:55,658 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-06-22 14:56:55,658 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 14:56:55,661 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 14:56:55,661 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 14:56:55,661 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 14:56:55,661 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 14:56:55,661 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:56:55,662 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 14:56:55,662 INFO ]: Interpolant automaton has 13 states. [2018-06-22 14:56:55,662 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 14:56:55,662 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 14:56:55,663 INFO ]: Found error trace [2018-06-22 14:56:55,663 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:56:55,663 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:56:55,663 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 14:56:55,663 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:56:55,663 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:56:55,664 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:56:55,664 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:56:55,664 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:56:55,701 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:56:56,169 WARN ]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-06-22 14:56:56,235 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:56:56,235 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:56:56,235 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 14:56:56,242 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 14:56:56,271 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 14:56:56,271 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:56:56,275 INFO ]: Computing forward predicates... [2018-06-22 14:56:56,698 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:56:56,719 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:56:56,719 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2018-06-22 14:56:56,719 INFO ]: Interpolant automaton has 15 states [2018-06-22 14:56:56,719 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 14:56:56,720 INFO ]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2018-06-22 14:56:56,720 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 15 states. [2018-06-22 14:56:56,904 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-06-22 14:56:57,250 WARN ]: Spent 133.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2018-06-22 14:56:57,491 WARN ]: Spent 224.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2018-06-22 14:56:57,510 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:56:57,510 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:56:57,514 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:56:57,514 INFO ]: Start accepts. Automaton has 15 states. Word has length 25 [2018-06-22 14:56:57,514 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:56:57,515 INFO ]: With dead ends: 21 [2018-06-22 14:56:57,515 INFO ]: Without dead ends: 21 [2018-06-22 14:56:57,515 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2018-06-22 14:56:57,516 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:56:57,519 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:56:57,522 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:56:57,522 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:56:57,522 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 14:56:57,523 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:56:57,523 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:56:57,523 INFO ]: Interpolant automaton has 15 states. [2018-06-22 14:56:57,523 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:56:57,523 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:56:57,523 INFO ]: Found error trace [2018-06-22 14:56:57,523 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:56:57,524 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:56:57,524 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 14:56:57,524 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:56:57,524 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:56:57,524 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:56:57,524 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:56:57,524 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:56:57,580 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:56:57,866 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-06-22 14:56:58,001 WARN ]: Spent 115.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2018-06-22 14:56:58,259 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:56:58,259 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:56:58,259 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 14:56:58,265 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 14:56:58,347 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 14:56:58,347 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:56:58,355 INFO ]: Computing forward predicates... [2018-06-22 14:57:05,355 WARN ]: Spent 6.28 s on a formula simplification. DAG size of input: 531 DAG size of output: 74 [2018-06-22 14:57:05,685 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2018-06-22 14:57:06,788 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:57:06,822 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:57:06,823 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2018-06-22 14:57:06,823 INFO ]: Interpolant automaton has 25 states [2018-06-22 14:57:06,823 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 14:57:06,823 INFO ]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2018-06-22 14:57:06,824 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 25 states. [2018-06-22 14:57:07,755 WARN ]: Spent 840.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 101 [2018-06-22 14:57:08,456 WARN ]: Spent 620.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 60 [2018-06-22 14:57:09,074 WARN ]: Spent 473.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 53 [2018-06-22 14:57:09,681 WARN ]: Spent 575.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 49 [2018-06-22 14:57:10,360 WARN ]: Spent 633.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 90 [2018-06-22 14:57:11,160 WARN ]: Spent 756.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 100 [2018-06-22 14:57:11,202 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:57:11,202 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 14:57:11,203 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 14:57:11,203 INFO ]: Start accepts. Automaton has 25 states. Word has length 29 [2018-06-22 14:57:11,203 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:57:11,203 INFO ]: With dead ends: 23 [2018-06-22 14:57:11,203 INFO ]: Without dead ends: 23 [2018-06-22 14:57:11,204 INFO ]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=181, Invalid=749, Unknown=0, NotChecked=0, Total=930 [2018-06-22 14:57:11,204 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 14:57:11,207 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 14:57:11,208 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 14:57:11,208 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 14:57:11,208 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-22 14:57:11,208 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:57:11,208 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 14:57:11,208 INFO ]: Interpolant automaton has 25 states. [2018-06-22 14:57:11,209 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 14:57:11,209 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 14:57:11,209 INFO ]: Found error trace [2018-06-22 14:57:11,209 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:57:11,210 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:57:11,210 INFO ]: Analyzing trace with hash -1661294575, now seen corresponding path program 6 times [2018-06-22 14:57:11,210 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:57:11,210 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:57:11,210 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:11,210 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:57:11,211 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:11,290 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:12,301 WARN ]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-06-22 14:57:12,870 WARN ]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-06-22 14:57:13,248 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 14:57:13,248 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:57:13,248 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) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:57:13,254 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 14:57:13,365 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-22 14:57:13,366 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:13,371 INFO ]: Computing forward predicates... [2018-06-22 14:57:13,827 WARN ]: Spent 371.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 37 [2018-06-22 14:57:15,199 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 14:57:15,229 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:57:15,229 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 27 [2018-06-22 14:57:15,230 INFO ]: Interpolant automaton has 27 states [2018-06-22 14:57:15,230 INFO ]: Constructing interpolant automaton starting with 27 interpolants. [2018-06-22 14:57:15,230 INFO ]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2018-06-22 14:57:15,230 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 27 states. [2018-06-22 14:57:16,145 WARN ]: Spent 722.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2018-06-22 14:57:16,464 WARN ]: Spent 274.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 38 [2018-06-22 14:57:16,797 WARN ]: Spent 304.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 38 [2018-06-22 14:57:17,322 WARN ]: Spent 493.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 55 [2018-06-22 14:57:17,613 WARN ]: Spent 256.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 61 [2018-06-22 14:57:18,012 WARN ]: Spent 357.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 61 [2018-06-22 14:57:18,651 WARN ]: Spent 594.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 75 [2018-06-22 14:57:18,725 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:57:18,725 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 14:57:18,726 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 14:57:18,726 INFO ]: Start accepts. Automaton has 27 states. Word has length 33 [2018-06-22 14:57:18,726 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:57:18,727 INFO ]: With dead ends: 25 [2018-06-22 14:57:18,727 INFO ]: Without dead ends: 25 [2018-06-22 14:57:18,727 INFO ]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2018-06-22 14:57:18,727 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 14:57:18,730 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 14:57:18,730 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 14:57:18,731 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 14:57:18,731 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 33 [2018-06-22 14:57:18,731 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:57:18,731 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 14:57:18,731 INFO ]: Interpolant automaton has 27 states. [2018-06-22 14:57:18,731 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 14:57:18,732 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 14:57:18,732 INFO ]: Found error trace [2018-06-22 14:57:18,732 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:57:18,732 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:57:18,733 INFO ]: Analyzing trace with hash -1494134477, now seen corresponding path program 7 times [2018-06-22 14:57:18,733 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:57:18,733 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:57:18,733 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:18,733 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:57:18,733 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:18,814 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:19,649 WARN ]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-06-22 14:57:19,937 WARN ]: Spent 146.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2018-06-22 14:57:20,428 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 14:57:20,428 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:57:20,428 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 14:57:20,434 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:57:20,488 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:20,493 INFO ]: Computing forward predicates... [2018-06-22 14:57:21,005 WARN ]: Spent 295.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2018-06-22 14:57:21,665 WARN ]: Spent 614.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-06-22 14:57:21,969 WARN ]: Spent 261.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2018-06-22 14:57:25,978 INFO ]: Checked inductivity of 105 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-06-22 14:57:25,997 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:57:25,997 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2018-06-22 14:57:25,998 INFO ]: Interpolant automaton has 33 states [2018-06-22 14:57:25,998 INFO ]: Constructing interpolant automaton starting with 33 interpolants. [2018-06-22 14:57:25,998 INFO ]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 14:57:25,998 INFO ]: Start difference. First operand 25 states and 26 transitions. Second operand 33 states. [2018-06-22 14:57:27,187 WARN ]: Spent 1.13 s on a formula simplification. DAG size of input: 149 DAG size of output: 135 [2018-06-22 14:57:27,570 WARN ]: Spent 290.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 36 [2018-06-22 14:57:28,186 WARN ]: Spent 548.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 43 [2018-06-22 14:57:28,756 WARN ]: Spent 505.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 45 [2018-06-22 14:57:29,945 WARN ]: Spent 1.14 s on a formula simplification. DAG size of input: 150 DAG size of output: 88 [2018-06-22 14:57:30,795 WARN ]: Spent 800.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 78 [2018-06-22 14:57:31,390 WARN ]: Spent 511.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 46 [2018-06-22 14:57:32,564 WARN ]: Spent 1.13 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-06-22 14:57:32,625 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:57:32,625 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-22 14:57:32,625 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 14:57:32,626 INFO ]: Start accepts. Automaton has 33 states. Word has length 37 [2018-06-22 14:57:32,626 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:57:32,626 INFO ]: With dead ends: 27 [2018-06-22 14:57:32,626 INFO ]: Without dead ends: 27 [2018-06-22 14:57:32,627 INFO ]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=245, Invalid=1395, Unknown=0, NotChecked=0, Total=1640 [2018-06-22 14:57:32,627 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 14:57:32,634 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 14:57:32,634 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 14:57:32,635 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-22 14:57:32,635 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 37 [2018-06-22 14:57:32,635 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:57:32,635 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-22 14:57:32,635 INFO ]: Interpolant automaton has 33 states. [2018-06-22 14:57:32,635 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-22 14:57:32,636 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 14:57:32,636 INFO ]: Found error trace [2018-06-22 14:57:32,636 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:57:32,636 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:57:32,636 INFO ]: Analyzing trace with hash 1618126293, now seen corresponding path program 8 times [2018-06-22 14:57:32,637 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:57:32,637 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:57:32,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:32,637 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:57:32,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:32,700 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:33,600 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 14:57:33,600 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:57:33,600 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 14:57:33,606 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:57:33,658 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:57:33,658 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:33,664 INFO ]: Computing forward predicates... [2018-06-22 14:57:33,904 WARN ]: Spent 150.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 18 [2018-06-22 14:57:34,385 WARN ]: Spent 434.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2018-06-22 14:57:35,037 WARN ]: Spent 529.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2018-06-22 14:57:35,424 WARN ]: Spent 329.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2018-06-22 14:57:35,613 WARN ]: Spent 147.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2018-06-22 14:57:37,547 INFO ]: Checked inductivity of 136 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 14:57:37,569 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:57:37,569 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 35 [2018-06-22 14:57:37,570 INFO ]: Interpolant automaton has 35 states [2018-06-22 14:57:37,570 INFO ]: Constructing interpolant automaton starting with 35 interpolants. [2018-06-22 14:57:37,570 INFO ]: CoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 14:57:37,570 INFO ]: Start difference. First operand 27 states and 28 transitions. Second operand 35 states. [2018-06-22 14:57:38,812 WARN ]: Spent 1.18 s on a formula simplification. DAG size of input: 143 DAG size of output: 125 [2018-06-22 14:57:39,292 WARN ]: Spent 383.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 37 [2018-06-22 14:57:39,808 WARN ]: Spent 457.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 41 [2018-06-22 14:57:40,489 WARN ]: Spent 611.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 54 [2018-06-22 14:57:41,013 WARN ]: Spent 447.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 60 [2018-06-22 14:57:41,662 WARN ]: Spent 595.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 56 [2018-06-22 14:57:42,305 WARN ]: Spent 591.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 53 [2018-06-22 14:57:42,969 WARN ]: Spent 612.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 62 [2018-06-22 14:57:44,285 WARN ]: Spent 1.25 s on a formula simplification. DAG size of input: 143 DAG size of output: 115 [2018-06-22 14:57:44,332 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:57:44,332 INFO ]: Finished difference Result 29 states and 30 transitions. [2018-06-22 14:57:44,332 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 14:57:44,332 INFO ]: Start accepts. Automaton has 35 states. Word has length 41 [2018-06-22 14:57:44,332 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:57:44,333 INFO ]: With dead ends: 29 [2018-06-22 14:57:44,333 INFO ]: Without dead ends: 29 [2018-06-22 14:57:44,334 INFO ]: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=308, Invalid=1584, Unknown=0, NotChecked=0, Total=1892 [2018-06-22 14:57:44,334 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 14:57:44,337 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-22 14:57:44,337 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 14:57:44,338 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-06-22 14:57:44,338 INFO ]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 41 [2018-06-22 14:57:44,338 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:57:44,338 INFO ]: Abstraction has 29 states and 30 transitions. [2018-06-22 14:57:44,338 INFO ]: Interpolant automaton has 35 states. [2018-06-22 14:57:44,338 INFO ]: Start isEmpty. Operand 29 states and 30 transitions. [2018-06-22 14:57:44,339 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 14:57:44,339 INFO ]: Found error trace [2018-06-22 14:57:44,339 INFO ]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:57:44,339 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:57:44,339 INFO ]: Analyzing trace with hash 996918775, now seen corresponding path program 9 times [2018-06-22 14:57:44,339 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:57:44,339 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:57:44,340 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:44,340 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:57:44,340 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:57:44,423 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:44,962 WARN ]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-22 14:57:45,884 INFO ]: Checked inductivity of 171 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-06-22 14:57:45,884 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:57:45,884 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:57:45,891 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:57:45,973 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-06-22 14:57:45,973 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:57:45,984 INFO ]: Computing forward predicates... [2018-06-22 14:57:46,494 WARN ]: Spent 245.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 27 [2018-06-22 14:57:46,655 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2018-06-22 14:57:47,024 WARN ]: Spent 318.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2018-06-22 14:57:49,703 WARN ]: Spent 2.41 s on a formula simplification. DAG size of input: 360 DAG size of output: 80 [2018-06-22 14:57:50,366 WARN ]: Spent 592.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-06-22 14:57:50,595 WARN ]: Spent 173.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 Received shutdown request... [2018-06-22 14:57:51,961 INFO ]: Timeout while computing interpolants [2018-06-22 14:57:52,162 WARN ]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:57:52,162 WARN ]: Verification canceled [2018-06-22 14:57:52,166 WARN ]: Timeout [2018-06-22 14:57:52,166 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:57:52 BoogieIcfgContainer [2018-06-22 14:57:52,166 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:57:52,167 INFO ]: Toolchain (without parser) took 61200.16 ms. Allocated memory was 309.3 MB in the beginning and 787.5 MB in the end (delta: 478.2 MB). Free memory was 261.7 MB in the beginning and 608.5 MB in the end (delta: -346.8 MB). Peak memory consumption was 564.8 MB. Max. memory is 3.6 GB. [2018-06-22 14:57:52,168 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:57:52,168 INFO ]: ChcToBoogie took 57.10 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:57:52,168 INFO ]: Boogie Preprocessor took 52.63 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 258.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:57:52,168 INFO ]: RCFGBuilder took 302.12 ms. Allocated memory is still 309.3 MB. Free memory was 258.7 MB in the beginning and 248.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:57:52,169 INFO ]: TraceAbstraction took 60779.22 ms. Allocated memory was 309.3 MB in the beginning and 787.5 MB in the end (delta: 478.2 MB). Free memory was 248.7 MB in the beginning and 608.5 MB in the end (delta: -359.8 MB). Peak memory consumption was 551.8 MB. Max. memory is 3.6 GB. [2018-06-22 14:57:52,172 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.10 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 52.63 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 258.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 302.12 ms. Allocated memory is still 309.3 MB. Free memory was 258.7 MB in the beginning and 248.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60779.22 ms. Allocated memory was 309.3 MB in the beginning and 787.5 MB in the end (delta: 478.2 MB). Free memory was 248.7 MB in the beginning and 608.5 MB in the end (delta: -359.8 MB). Peak memory consumption was 551.8 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 analyzing trace of length 46 with TraceHistMax 10, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 9 quantified variables from 5 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 60.7s OverallTime, 10 OverallIterations, 10 TraceHistogramMax, 23.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 120 SDtfs, 422 SDslu, 825 SDs, 0 SdLazy, 714 SolverSat, 505 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 165 SyntacticMatches, 3 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 40.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=9, 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 28.0s InterpolantComputationTime, 441 NumberOfCodeBlocks, 441 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 5168496 SizeOfPredicates, 450 NumberOfNonLiveVariables, 1756 ConjunctsInSsa, 392 ConjunctsInUnsatCore, 17 InterpolantComputations, 1 PerfectInterpolantSequences, 240/888 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/dillig17.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-57-52-182.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dillig17.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-57-52-182.csv Completed graceful shutdown