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_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_clnt_1.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:31:34,620 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:31:34,625 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:31:34,639 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:31:34,639 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:31:34,643 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:31:34,644 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:31:34,646 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:31:34,649 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:31:34,650 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:31:34,651 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:31:34,651 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:31:34,663 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:31:34,665 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:31:34,666 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:31:34,666 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:31:34,668 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:31:34,669 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:31:34,671 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:31:34,675 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:31:34,676 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:31:34,680 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:31:34,680 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:31:34,681 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:31:34,682 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:31:34,683 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:31:34,683 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:31:34,684 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:31:34,685 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:31:34,685 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:31:34,686 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:31:34,687 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:31:34,687 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:31:34,688 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:31:34,689 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:31:34,689 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:31:34,710 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:31:34,711 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:31:34,711 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:31:34,711 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:31:34,712 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:31:34,713 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:31:34,713 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:31:34,714 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:31:34,714 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:31:34,714 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:31:34,714 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:31:34,714 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:31:34,715 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:31:34,715 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:31:34,715 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:31:34,715 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:31:34,715 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:31:34,717 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:31:34,717 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:31:34,767 INFO ]: Repository-Root is: /tmp [2018-06-22 04:31:34,784 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:31:34,789 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:31:34,790 INFO ]: Initializing SmtParser... [2018-06-22 04:31:34,791 INFO ]: SmtParser initialized [2018-06-22 04:31:34,791 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_clnt_1.cil.smt2 [2018-06-22 04:31:34,792 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 04:31:34,885 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_clnt_1.cil.smt2 unknown [2018-06-22 04:31:35,371 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_clnt_1.cil.smt2 [2018-06-22 04:31:35,376 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:31:35,383 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:31:35,383 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:31:35,383 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:31:35,383 INFO ]: ChcToBoogie initialized [2018-06-22 04:31:35,393 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:31:35" (1/1) ... [2018-06-22 04:31:35,490 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:31:35 Unit [2018-06-22 04:31:35,490 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:31:35,490 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:31:35,490 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:31:35,490 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:31:35,506 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:31:35" (1/1) ... [2018-06-22 04:31:35,506 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:31:35" (1/1) ... [2018-06-22 04:31:35,515 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:31:35" (1/1) ... [2018-06-22 04:31:35,515 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:31:35" (1/1) ... [2018-06-22 04:31:35,536 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:31:35" (1/1) ... [2018-06-22 04:31:35,538 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:31:35" (1/1) ... [2018-06-22 04:31:35,541 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:31:35" (1/1) ... [2018-06-22 04:31:35,545 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:31:35,546 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:31:35,546 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:31:35,546 INFO ]: RCFGBuilder initialized [2018-06-22 04:31:35,547 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:31:35" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:31:35,561 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:31:35,561 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:31:35,561 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:31:35,561 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:31:35,561 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:31:35,561 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 04:31:36,054 INFO ]: Using library mode [2018-06-22 04:31:36,054 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:31:36 BoogieIcfgContainer [2018-06-22 04:31:36,055 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:31:36,060 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:31:36,060 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:31:36,066 INFO ]: TraceAbstraction initialized [2018-06-22 04:31:36,066 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:31:35" (1/3) ... [2018-06-22 04:31:36,067 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448df2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:31:36, skipping insertion in model container [2018-06-22 04:31:36,067 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:31:35" (2/3) ... [2018-06-22 04:31:36,067 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448df2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:31:36, skipping insertion in model container [2018-06-22 04:31:36,067 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:31:36" (3/3) ... [2018-06-22 04:31:36,070 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:31:36,080 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:31:36,090 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:31:36,134 INFO ]: Using default assertion order modulation [2018-06-22 04:31:36,135 INFO ]: Interprodecural is true [2018-06-22 04:31:36,135 INFO ]: Hoare is false [2018-06-22 04:31:36,135 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:31:36,135 INFO ]: Backedges is TWOTRACK [2018-06-22 04:31:36,135 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:31:36,135 INFO ]: Difference is false [2018-06-22 04:31:36,135 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:31:36,135 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:31:36,147 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:31:36,157 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:31:36,157 INFO ]: Found error trace [2018-06-22 04:31:36,158 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:31:36,158 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:31:36,163 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 04:31:36,165 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:31:36,166 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:31:36,204 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:36,204 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:31:36,204 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:36,265 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:31:36,387 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:31:36,390 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:31:36,390 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:31:36,392 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:31:36,403 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:31:36,403 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:31:36,406 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:31:36,496 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:31:36,496 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:31:36,496 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:31:36,497 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:31:36,498 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:31:36,504 INFO ]: With dead ends: 9 [2018-06-22 04:31:36,504 INFO ]: Without dead ends: 9 [2018-06-22 04:31:36,506 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:31:36,522 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:31:36,547 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:31:36,548 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:31:36,548 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:31:36,550 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:31:36,550 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:31:36,550 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:31:36,550 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:31:36,550 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:31:36,551 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:31:36,551 INFO ]: Found error trace [2018-06-22 04:31:36,551 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:31:36,551 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:31:36,551 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 04:31:36,551 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:31:36,551 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:31:36,554 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:36,554 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:31:36,554 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:36,673 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:31:37,039 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:31:37,039 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:31:37,039 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 04:31:37,058 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:31:37,168 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:31:37,180 INFO ]: Computing forward predicates... [2018-06-22 04:31:38,023 WARN ]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:31:38,036 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:31:38,070 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:31:38,070 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 04:31:38,070 INFO ]: Interpolant automaton has 6 states [2018-06-22 04:31:38,070 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 04:31:38,071 INFO ]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-22 04:31:38,071 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 04:31:38,337 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:31:38,337 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 04:31:38,337 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 04:31:38,337 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 04:31:38,337 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:31:38,338 INFO ]: With dead ends: 10 [2018-06-22 04:31:38,338 INFO ]: Without dead ends: 10 [2018-06-22 04:31:38,339 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:31:38,339 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 04:31:38,340 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 04:31:38,340 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 04:31:38,340 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 04:31:38,340 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 04:31:38,340 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:31:38,341 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 04:31:38,341 INFO ]: Interpolant automaton has 6 states. [2018-06-22 04:31:38,341 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 04:31:38,341 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 04:31:38,341 INFO ]: Found error trace [2018-06-22 04:31:38,341 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:31:38,342 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:31:38,342 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 04:31:38,342 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:31:38,342 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:31:38,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:38,343 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:31:38,343 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:38,463 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:31:38,798 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:31:38,799 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:31:38,799 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 04:31:38,812 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:31:38,962 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:31:38,962 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:31:38,970 INFO ]: Computing forward predicates... [2018-06-22 04:31:39,394 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:31:39,414 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:31:39,414 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 04:31:39,414 INFO ]: Interpolant automaton has 8 states [2018-06-22 04:31:39,415 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 04:31:39,415 INFO ]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-06-22 04:31:39,415 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 04:31:39,568 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:31:39,569 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:31:39,569 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 04:31:39,569 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 04:31:39,569 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:31:39,569 INFO ]: With dead ends: 11 [2018-06-22 04:31:39,569 INFO ]: Without dead ends: 11 [2018-06-22 04:31:39,570 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:31:39,570 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:31:39,571 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:31:39,571 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:31:39,571 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:31:39,571 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 04:31:39,572 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:31:39,572 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:31:39,572 INFO ]: Interpolant automaton has 8 states. [2018-06-22 04:31:39,572 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:31:39,572 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:31:39,572 INFO ]: Found error trace [2018-06-22 04:31:39,572 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:31:39,572 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:31:39,572 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 04:31:39,572 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:31:39,572 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:31:39,573 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:39,573 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:31:39,573 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:39,662 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:31:39,918 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:31:39,919 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:31:39,919 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 04:31:39,925 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:31:40,074 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 04:31:40,074 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:31:40,083 INFO ]: Computing forward predicates... [2018-06-22 04:31:40,984 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:31:41,009 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:31:41,009 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 04:31:41,009 INFO ]: Interpolant automaton has 10 states [2018-06-22 04:31:41,009 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 04:31:41,009 INFO ]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:31:41,010 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 04:31:41,180 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:31:41,180 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 04:31:41,233 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 04:31:41,233 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 04:31:41,233 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:31:41,233 INFO ]: With dead ends: 12 [2018-06-22 04:31:41,234 INFO ]: Without dead ends: 12 [2018-06-22 04:31:41,234 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:31:41,234 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 04:31:41,235 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 04:31:41,235 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 04:31:41,236 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 04:31:41,236 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 04:31:41,236 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:31:41,236 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 04:31:41,236 INFO ]: Interpolant automaton has 10 states. [2018-06-22 04:31:41,236 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 04:31:41,236 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 04:31:41,236 INFO ]: Found error trace [2018-06-22 04:31:41,236 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:31:41,236 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:31:41,237 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 4 times [2018-06-22 04:31:41,237 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:31:41,237 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:31:41,237 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:41,237 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:31:41,237 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:41,381 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:31:42,050 WARN ]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 04:31:42,250 WARN ]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 4 [2018-06-22 04:31:42,251 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:31:42,251 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:31:42,251 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) [2018-06-22 04:31:42,267 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:31:42,424 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:31:42,424 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:31:42,437 INFO ]: Computing forward predicates... [2018-06-22 04:31:43,114 WARN ]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:31:46,092 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:31:46,121 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:31:46,121 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-22 04:31:46,121 INFO ]: Interpolant automaton has 12 states [2018-06-22 04:31:46,121 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 04:31:46,122 INFO ]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-22 04:31:46,122 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-06-22 04:31:46,451 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:31:46,451 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:31:46,547 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:31:46,547 INFO ]: Start accepts. Automaton has 12 states. Word has length 11 [2018-06-22 04:31:46,548 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:31:46,548 INFO ]: With dead ends: 13 [2018-06-22 04:31:46,548 INFO ]: Without dead ends: 13 [2018-06-22 04:31:46,548 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2018-06-22 04:31:46,548 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:31:46,549 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:31:46,549 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:31:46,550 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:31:46,550 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-22 04:31:46,550 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:31:46,550 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:31:46,550 INFO ]: Interpolant automaton has 12 states. [2018-06-22 04:31:46,550 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:31:46,550 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:31:46,550 INFO ]: Found error trace [2018-06-22 04:31:46,550 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:31:46,550 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:31:46,550 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 5 times [2018-06-22 04:31:46,550 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:31:46,550 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:31:46,551 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:46,551 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:31:46,551 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:46,659 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:31:46,961 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:31:46,961 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:31:46,961 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 04:31:46,968 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 04:31:47,173 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 04:31:47,173 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:31:47,192 INFO ]: Computing forward predicates... [2018-06-22 04:31:48,259 WARN ]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 04:31:54,543 WARN ]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 04:31:54,558 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:31:54,591 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:31:54,592 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 04:31:54,592 INFO ]: Interpolant automaton has 14 states [2018-06-22 04:31:54,592 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 04:31:54,592 INFO ]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-06-22 04:31:54,592 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 04:31:54,979 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:31:54,979 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 04:31:54,981 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 04:31:54,981 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 04:31:54,981 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:31:54,981 INFO ]: With dead ends: 16 [2018-06-22 04:31:54,981 INFO ]: Without dead ends: 16 [2018-06-22 04:31:54,982 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2018-06-22 04:31:54,982 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 04:31:54,983 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-22 04:31:54,983 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 04:31:54,984 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-22 04:31:54,984 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-06-22 04:31:54,984 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:31:54,984 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-22 04:31:54,984 INFO ]: Interpolant automaton has 14 states. [2018-06-22 04:31:54,984 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-22 04:31:54,984 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 04:31:54,984 INFO ]: Found error trace [2018-06-22 04:31:54,984 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:31:54,984 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:31:54,984 INFO ]: Analyzing trace with hash 1051911180, now seen corresponding path program 6 times [2018-06-22 04:31:54,984 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:31:54,984 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:31:54,985 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:54,985 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:31:54,985 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:31:55,390 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:31:56,141 WARN ]: Spent 213.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 13 [2018-06-22 04:31:56,495 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:31:56,495 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:31:56,495 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 04:31:56,512 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 04:31:56,777 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-06-22 04:31:56,777 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:31:56,799 INFO ]: Computing forward predicates... [2018-06-22 04:32:01,833 WARN ]: Spent 2.08 s on a formula simplification. DAG size of input: 261 DAG size of output: 113 Received shutdown request... [2018-06-22 04:32:37,029 INFO ]: Timeout while computing interpolants [2018-06-22 04:32:37,229 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:32:37,229 WARN ]: Verification canceled [2018-06-22 04:32:37,233 WARN ]: Timeout [2018-06-22 04:32:37,233 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:32:37 BoogieIcfgContainer [2018-06-22 04:32:37,233 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:32:37,234 INFO ]: Toolchain (without parser) took 61858.07 ms. Allocated memory was 305.1 MB in the beginning and 1.3 GB in the end (delta: 984.1 MB). Free memory was 243.6 MB in the beginning and 428.9 MB in the end (delta: -185.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-22 04:32:37,235 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:32:37,235 INFO ]: ChcToBoogie took 106.95 ms. Allocated memory is still 305.1 MB. Free memory was 243.6 MB in the beginning and 240.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:32:37,235 INFO ]: Boogie Preprocessor took 55.02 ms. Allocated memory is still 305.1 MB. Free memory was 240.6 MB in the beginning and 238.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:32:37,235 INFO ]: RCFGBuilder took 512.74 ms. Allocated memory is still 305.1 MB. Free memory was 238.6 MB in the beginning and 211.5 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:32:37,236 INFO ]: TraceAbstraction took 61173.35 ms. Allocated memory was 305.1 MB in the beginning and 1.3 GB in the end (delta: 984.1 MB). Free memory was 211.5 MB in the beginning and 428.9 MB in the end (delta: -217.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-22 04:32:37,238 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 305.1 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 106.95 ms. Allocated memory is still 305.1 MB. Free memory was 243.6 MB in the beginning and 240.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 55.02 ms. Allocated memory is still 305.1 MB. Free memory was 240.6 MB in the beginning and 238.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 512.74 ms. Allocated memory is still 305.1 MB. Free memory was 238.6 MB in the beginning and 211.5 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 61173.35 ms. Allocated memory was 305.1 MB in the beginning and 1.3 GB in the end (delta: 984.1 MB). Free memory was 211.5 MB in the beginning and 428.9 MB in the end (delta: -217.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 8, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 3456 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 61.1s OverallTime, 7 OverallIterations, 8 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 5 SDslu, 134 SDs, 0 SdLazy, 62 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 3838 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1925 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/70 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/s3_clnt_1.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-32-37-257.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_clnt_1.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-32-37-257.csv Completed graceful shutdown