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/ctigar/bkley.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 05:10:45,365 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 05:10:45,368 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 05:10:45,381 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 05:10:45,382 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 05:10:45,383 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 05:10:45,385 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 05:10:45,388 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 05:10:45,390 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 05:10:45,390 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 05:10:45,392 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 05:10:45,393 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 05:10:45,394 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 05:10:45,395 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 05:10:45,395 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 05:10:45,398 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 05:10:45,400 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 05:10:45,410 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 05:10:45,411 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 05:10:45,412 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 05:10:45,413 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 05:10:45,419 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 05:10:45,420 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 05:10:45,420 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 05:10:45,421 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 05:10:45,425 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 05:10:45,426 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 05:10:45,427 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 05:10:45,428 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 05:10:45,428 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 05:10:45,432 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 05:10:45,433 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 05:10:45,434 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 05:10:45,434 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 05:10:45,435 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 05:10:45,435 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 05:10:45,460 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 05:10:45,460 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 05:10:45,461 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 05:10:45,462 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 05:10:45,463 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 05:10:45,463 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 05:10:45,463 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 05:10:45,463 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 05:10:45,464 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 05:10:45,464 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 05:10:45,464 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 05:10:45,464 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 05:10:45,464 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 05:10:45,465 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 05:10:45,465 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 05:10:45,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 05:10:45,466 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 05:10:45,467 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 05:10:45,467 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 05:10:45,523 INFO ]: Repository-Root is: /tmp [2018-06-22 05:10:45,541 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 05:10:45,547 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 05:10:45,549 INFO ]: Initializing SmtParser... [2018-06-22 05:10:45,549 INFO ]: SmtParser initialized [2018-06-22 05:10:45,550 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/bkley.c.smt2 [2018-06-22 05:10:45,551 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 05:10:45,648 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/bkley.c.smt2 unknown [2018-06-22 05:10:45,971 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/bkley.c.smt2 [2018-06-22 05:10:45,976 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 05:10:45,986 INFO ]: Walking toolchain with 4 elements. [2018-06-22 05:10:45,986 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 05:10:45,986 INFO ]: Initializing ChcToBoogie... [2018-06-22 05:10:45,986 INFO ]: ChcToBoogie initialized [2018-06-22 05:10:45,989 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:10:45" (1/1) ... [2018-06-22 05:10:46,059 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:10:46 Unit [2018-06-22 05:10:46,059 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 05:10:46,060 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 05:10:46,060 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 05:10:46,060 INFO ]: Boogie Preprocessor initialized [2018-06-22 05:10:46,083 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:10:46" (1/1) ... [2018-06-22 05:10:46,084 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:10:46" (1/1) ... [2018-06-22 05:10:46,097 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:10:46" (1/1) ... [2018-06-22 05:10:46,098 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:10:46" (1/1) ... [2018-06-22 05:10:46,104 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:10:46" (1/1) ... [2018-06-22 05:10:46,106 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:10:46" (1/1) ... [2018-06-22 05:10:46,109 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:10:46" (1/1) ... [2018-06-22 05:10:46,112 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 05:10:46,112 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 05:10:46,112 INFO ]: Initializing RCFGBuilder... [2018-06-22 05:10:46,112 INFO ]: RCFGBuilder initialized [2018-06-22 05:10:46,113 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:10:46" (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 05:10:46,147 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 05:10:46,147 INFO ]: Found specification of procedure gotoProc [2018-06-22 05:10:46,147 INFO ]: Found implementation of procedure gotoProc [2018-06-22 05:10:46,147 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 05:10:46,147 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 05:10:46,147 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 05:10:46,490 INFO ]: Using library mode [2018-06-22 05:10:46,491 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:10:46 BoogieIcfgContainer [2018-06-22 05:10:46,491 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 05:10:46,492 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 05:10:46,492 INFO ]: Initializing TraceAbstraction... [2018-06-22 05:10:46,496 INFO ]: TraceAbstraction initialized [2018-06-22 05:10:46,496 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:10:45" (1/3) ... [2018-06-22 05:10:46,497 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8d1c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:10:46, skipping insertion in model container [2018-06-22 05:10:46,497 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:10:46" (2/3) ... [2018-06-22 05:10:46,497 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8d1c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:10:46, skipping insertion in model container [2018-06-22 05:10:46,497 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:10:46" (3/3) ... [2018-06-22 05:10:46,499 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 05:10:46,520 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 05:10:46,530 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 05:10:46,586 INFO ]: Using default assertion order modulation [2018-06-22 05:10:46,587 INFO ]: Interprodecural is true [2018-06-22 05:10:46,587 INFO ]: Hoare is false [2018-06-22 05:10:46,587 INFO ]: Compute interpolants for FPandBP [2018-06-22 05:10:46,587 INFO ]: Backedges is TWOTRACK [2018-06-22 05:10:46,587 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 05:10:46,587 INFO ]: Difference is false [2018-06-22 05:10:46,587 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 05:10:46,587 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 05:10:46,605 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 05:10:46,622 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 05:10:46,622 INFO ]: Found error trace [2018-06-22 05:10:46,623 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:10:46,623 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:10:46,629 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 05:10:46,631 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:10:46,632 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:10:46,675 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:10:46,675 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:10:46,675 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:10:46,728 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:46,802 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:10:46,805 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 05:10:46,805 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 05:10:46,808 INFO ]: Interpolant automaton has 3 states [2018-06-22 05:10:46,821 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 05:10:46,822 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 05:10:46,824 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 05:10:46,886 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:10:46,887 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 05:10:46,887 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 05:10:46,888 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 05:10:46,890 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:10:46,898 INFO ]: With dead ends: 9 [2018-06-22 05:10:46,898 INFO ]: Without dead ends: 9 [2018-06-22 05:10:46,900 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 05:10:46,914 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 05:10:46,930 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 05:10:46,931 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 05:10:46,932 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 05:10:46,933 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 05:10:46,933 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:10:46,933 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 05:10:46,933 INFO ]: Interpolant automaton has 3 states. [2018-06-22 05:10:46,933 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 05:10:46,934 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 05:10:46,934 INFO ]: Found error trace [2018-06-22 05:10:46,934 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:10:46,934 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:10:46,934 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 05:10:46,934 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:10:46,934 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:10:46,935 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:10:46,935 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:10:46,935 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:10:47,026 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:47,204 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:10:47,204 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:10:47,204 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) [2018-06-22 05:10:47,221 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:10:47,290 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:47,303 INFO ]: Computing forward predicates... [2018-06-22 05:10:47,583 WARN ]: Spent 126.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 1 [2018-06-22 05:10:48,304 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:10:48,338 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 05:10:48,338 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 05:10:48,339 INFO ]: Interpolant automaton has 5 states [2018-06-22 05:10:48,339 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 05:10:48,339 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 05:10:48,339 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 05:10:48,548 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 05:10:48,548 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 05:10:48,549 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 05:10:48,549 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 05:10:48,549 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 05:10:48,549 INFO ]: With dead ends: 11 [2018-06-22 05:10:48,549 INFO ]: Without dead ends: 11 [2018-06-22 05:10:48,550 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 05:10:48,550 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 05:10:48,552 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 05:10:48,552 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 05:10:48,552 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 05:10:48,552 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 05:10:48,552 INFO ]: Finished accepts. word is rejected. [2018-06-22 05:10:48,552 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 05:10:48,552 INFO ]: Interpolant automaton has 5 states. [2018-06-22 05:10:48,552 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 05:10:48,552 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 05:10:48,552 INFO ]: Found error trace [2018-06-22 05:10:48,553 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 05:10:48,556 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 05:10:48,556 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 05:10:48,556 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 05:10:48,556 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 05:10:48,557 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:10:48,557 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 05:10:48,557 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 05:10:48,684 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:49,107 WARN ]: Spent 209.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2018-06-22 05:10:49,300 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 7 [2018-06-22 05:10:49,472 WARN ]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 05:10:49,473 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 05:10:49,473 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 05:10:49,473 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 05:10:49,479 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 05:10:49,590 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 05:10:49,590 INFO ]: Conjunction of SSA is unsat [2018-06-22 05:10:49,594 INFO ]: Computing forward predicates... [2018-06-22 05:10:49,826 WARN ]: Spent 131.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 Received shutdown request... [2018-06-22 05:11:56,116 INFO ]: Timeout while computing interpolants [2018-06-22 05:11:56,317 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:11:56,317 WARN ]: Verification canceled [2018-06-22 05:11:56,322 WARN ]: Timeout [2018-06-22 05:11:56,322 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:11:56 BoogieIcfgContainer [2018-06-22 05:11:56,322 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:11:56,324 INFO ]: Toolchain (without parser) took 70346.59 ms. Allocated memory was 305.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 253.2 MB in the beginning and 347.7 MB in the end (delta: -94.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:11:56,325 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 305.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:11:56,325 INFO ]: ChcToBoogie took 73.52 ms. Allocated memory is still 305.7 MB. Free memory was 253.2 MB in the beginning and 251.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:11:56,326 INFO ]: Boogie Preprocessor took 51.66 ms. Allocated memory is still 305.7 MB. Free memory was 251.2 MB in the beginning and 249.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:11:56,326 INFO ]: RCFGBuilder took 378.73 ms. Allocated memory is still 305.7 MB. Free memory was 249.2 MB in the beginning and 235.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 3.6 GB. [2018-06-22 05:11:56,327 INFO ]: TraceAbstraction took 69830.22 ms. Allocated memory was 305.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 235.2 MB in the beginning and 347.7 MB in the end (delta: -112.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 05:11:56,330 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 305.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 73.52 ms. Allocated memory is still 305.7 MB. Free memory was 253.2 MB in the beginning and 251.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 51.66 ms. Allocated memory is still 305.7 MB. Free memory was 251.2 MB in the beginning and 249.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 378.73 ms. Allocated memory is still 305.7 MB. Free memory was 249.2 MB in the beginning and 235.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 69830.22 ms. Allocated memory was 305.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 235.2 MB in the beginning and 347.7 MB in the end (delta: -112.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 11 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 5023 quantified variables from 14 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 69.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 15 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 232 SizeOfPredicates, 6 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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/bkley.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-11-56-374.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bkley.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-11-56-374.csv Completed graceful shutdown