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/floppy_simpl3_BUG.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:21:00,424 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:21:00,426 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:21:00,440 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:21:00,440 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:21:00,441 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:21:00,445 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:21:00,447 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:21:00,449 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:21:00,449 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:21:00,451 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:21:00,452 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:21:00,452 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:21:00,454 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:21:00,454 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:21:00,457 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:21:00,459 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:21:00,472 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:21:00,474 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:21:00,475 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:21:00,476 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:21:00,482 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:21:00,482 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:21:00,482 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:21:00,483 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:21:00,484 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:21:00,484 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:21:00,485 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:21:00,491 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:21:00,491 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:21:00,492 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:21:00,492 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:21:00,493 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:21:00,493 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:21:00,494 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:21:00,494 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:21:00,511 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:21:00,512 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:21:00,512 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:21:00,512 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:21:00,513 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:21:00,513 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:21:00,514 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:21:00,514 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:21:00,514 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:21:00,514 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:21:00,514 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:21:00,515 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:21:00,515 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:21:00,515 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:21:00,515 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:21:00,515 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:21:00,516 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:21:00,517 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:21:00,517 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:21:00,564 INFO ]: Repository-Root is: /tmp [2018-06-22 04:21:00,577 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:21:00,581 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:21:00,582 INFO ]: Initializing SmtParser... [2018-06-22 04:21:00,582 INFO ]: SmtParser initialized [2018-06-22 04:21:00,583 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/floppy_simpl3_BUG.cil.smt2 [2018-06-22 04:21:00,586 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 04:21:00,683 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/floppy_simpl3_BUG.cil.smt2 unknown [2018-06-22 04:21:01,766 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/floppy_simpl3_BUG.cil.smt2 [2018-06-22 04:21:01,770 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:21:01,776 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:21:01,776 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:21:01,776 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:21:01,777 INFO ]: ChcToBoogie initialized [2018-06-22 04:21:01,780 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:21:01" (1/1) ... [2018-06-22 04:21:01,879 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:21:01 Unit [2018-06-22 04:21:01,879 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:21:01,918 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:21:01,918 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:21:01,918 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:21:01,932 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:21:01" (1/1) ... [2018-06-22 04:21:01,932 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:21:01" (1/1) ... [2018-06-22 04:21:01,951 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:21:01" (1/1) ... [2018-06-22 04:21:01,954 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:21:01" (1/1) ... [2018-06-22 04:21:01,985 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:21:01" (1/1) ... [2018-06-22 04:21:01,986 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:21:01" (1/1) ... [2018-06-22 04:21:01,992 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:21:01" (1/1) ... [2018-06-22 04:21:02,001 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:21:02,001 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:21:02,001 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:21:02,001 INFO ]: RCFGBuilder initialized [2018-06-22 04:21:02,002 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:21:01" (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 04:21:02,020 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:21:02,020 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:21:02,020 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:21:02,020 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:21:02,020 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:21:02,020 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 04:21:02,799 INFO ]: Using library mode [2018-06-22 04:21:02,799 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:21:02 BoogieIcfgContainer [2018-06-22 04:21:02,799 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:21:02,801 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:21:02,801 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:21:02,808 INFO ]: TraceAbstraction initialized [2018-06-22 04:21:02,809 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:21:01" (1/3) ... [2018-06-22 04:21:02,809 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6c774e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:21:02, skipping insertion in model container [2018-06-22 04:21:02,809 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:21:01" (2/3) ... [2018-06-22 04:21:02,810 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6c774e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:21:02, skipping insertion in model container [2018-06-22 04:21:02,810 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:21:02" (3/3) ... [2018-06-22 04:21:02,812 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:21:02,821 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:21:02,830 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:21:02,886 INFO ]: Using default assertion order modulation [2018-06-22 04:21:02,887 INFO ]: Interprodecural is true [2018-06-22 04:21:02,887 INFO ]: Hoare is false [2018-06-22 04:21:02,887 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:21:02,887 INFO ]: Backedges is TWOTRACK [2018-06-22 04:21:02,887 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:21:02,887 INFO ]: Difference is false [2018-06-22 04:21:02,887 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:21:02,887 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:21:02,903 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:21:02,918 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:21:02,918 INFO ]: Found error trace [2018-06-22 04:21:02,919 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:21:02,919 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:21:02,924 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 04:21:02,926 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:21:02,926 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:21:02,959 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:21:02,959 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:21:02,959 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:21:03,057 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:21:03,204 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:21:03,207 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:21:03,207 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:21:03,209 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:21:03,224 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:21:03,224 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:21:03,227 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:21:03,357 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:21:03,357 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:21:03,357 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:21:03,358 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:21:03,358 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:21:03,364 INFO ]: With dead ends: 9 [2018-06-22 04:21:03,364 INFO ]: Without dead ends: 9 [2018-06-22 04:21:03,366 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 04:21:03,378 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:21:03,391 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:21:03,392 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:21:03,392 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:21:03,393 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:21:03,393 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:21:03,393 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:21:03,393 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:21:03,393 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:21:03,393 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:21:03,393 INFO ]: Found error trace [2018-06-22 04:21:03,393 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:21:03,394 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:21:03,394 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 04:21:03,394 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:21:03,394 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:21:03,394 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:21:03,394 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:21:03,394 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:21:03,610 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:21:04,033 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:21:04,033 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:21:04,033 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 04:21:04,040 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:21:04,241 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:21:04,260 INFO ]: Computing forward predicates... [2018-06-22 04:21:05,652 WARN ]: Spent 286.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 12 [2018-06-22 04:21:05,663 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:21:05,685 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:21:05,685 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 04:21:05,686 INFO ]: Interpolant automaton has 6 states [2018-06-22 04:21:05,686 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 04:21:05,686 INFO ]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-22 04:21:05,686 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 04:21:05,805 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:21:05,805 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 04:21:05,809 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 04:21:05,809 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 04:21:05,809 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:21:05,810 INFO ]: With dead ends: 10 [2018-06-22 04:21:05,810 INFO ]: Without dead ends: 10 [2018-06-22 04:21:05,810 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:21:05,811 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 04:21:05,812 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 04:21:05,812 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 04:21:05,812 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 04:21:05,812 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 04:21:05,812 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:21:05,812 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 04:21:05,812 INFO ]: Interpolant automaton has 6 states. [2018-06-22 04:21:05,812 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 04:21:05,813 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 04:21:05,813 INFO ]: Found error trace [2018-06-22 04:21:05,813 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:21:05,813 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:21:05,813 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 04:21:05,813 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:21:05,813 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:21:05,814 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:21:05,814 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:21:05,814 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:21:06,206 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:21:06,807 WARN ]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 04:21:07,568 WARN ]: Spent 731.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 22 [2018-06-22 04:21:07,593 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:21:07,593 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:21:07,593 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 04:21:07,599 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:21:07,816 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:21:07,816 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:21:07,837 INFO ]: Computing forward predicates... [2018-06-22 04:21:10,317 WARN ]: Spent 162.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 18 [2018-06-22 04:21:24,563 WARN ]: Spent 157.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 19 [2018-06-22 04:21:24,575 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:21:24,602 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:21:24,602 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 04:21:24,602 INFO ]: Interpolant automaton has 8 states [2018-06-22 04:21:24,603 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 04:21:24,603 INFO ]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-06-22 04:21:24,603 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 04:21:24,680 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:21:24,680 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:21:24,687 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 04:21:24,687 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 04:21:24,687 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:21:24,687 INFO ]: With dead ends: 11 [2018-06-22 04:21:24,687 INFO ]: Without dead ends: 11 [2018-06-22 04:21:24,688 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-06-22 04:21:24,688 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:21:24,689 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:21:24,689 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:21:24,689 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:21:24,689 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 04:21:24,689 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:21:24,689 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:21:24,689 INFO ]: Interpolant automaton has 8 states. [2018-06-22 04:21:24,689 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:21:24,690 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:21:24,690 INFO ]: Found error trace [2018-06-22 04:21:24,690 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:21:24,690 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:21:24,690 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 04:21:24,690 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:21:24,690 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:21:24,692 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:21:24,692 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:21:24,692 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:21:25,258 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:21:26,012 WARN ]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 04:21:26,477 WARN ]: Spent 401.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 17 [2018-06-22 04:21:26,698 WARN ]: Spent 209.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 47 [2018-06-22 04:21:26,709 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:21:26,709 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:21:26,709 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 04:21:26,717 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:21:27,042 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 04:21:27,042 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:21:27,067 INFO ]: Computing forward predicates... [2018-06-22 04:21:30,025 WARN ]: Spent 152.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 18 [2018-06-22 04:21:41,027 WARN ]: Spent 643.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-06-22 04:21:41,777 WARN ]: Spent 172.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 19 [2018-06-22 04:21:41,781 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:21:41,822 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:21:41,822 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 04:21:41,822 INFO ]: Interpolant automaton has 10 states [2018-06-22 04:21:41,822 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 04:21:41,822 INFO ]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:21:41,822 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 04:21:41,935 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:21:41,936 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 04:21:41,936 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 04:21:41,936 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 04:21:41,936 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:21:41,936 INFO ]: With dead ends: 12 [2018-06-22 04:21:41,936 INFO ]: Without dead ends: 12 [2018-06-22 04:21:41,937 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-06-22 04:21:41,937 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 04:21:41,938 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 04:21:41,938 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 04:21:41,939 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 04:21:41,939 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 04:21:41,939 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:21:41,939 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 04:21:41,939 INFO ]: Interpolant automaton has 10 states. [2018-06-22 04:21:41,939 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 04:21:41,939 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 04:21:41,939 INFO ]: Found error trace [2018-06-22 04:21:41,939 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:21:41,940 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:21:41,940 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 4 times [2018-06-22 04:21:41,940 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:21:41,940 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:21:41,940 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:21:41,940 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:21:41,940 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:21:42,380 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:21:43,271 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 04:21:43,839 WARN ]: Spent 515.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 14 [2018-06-22 04:21:43,980 WARN ]: Spent 124.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 31 [2018-06-22 04:21:44,631 WARN ]: Spent 630.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 61 [2018-06-22 04:21:44,642 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:21:44,642 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:21:44,642 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 04:21:44,649 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 04:21:44,989 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:21:44,989 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:21:45,031 INFO ]: Computing forward predicates... [2018-06-22 04:21:45,998 WARN ]: Spent 118.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 18 [2018-06-22 04:22:07,217 WARN ]: Spent 354.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 Received shutdown request... [2018-06-22 04:22:07,967 INFO ]: Timeout while computing interpolants [2018-06-22 04:22:08,168 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:22:08,168 WARN ]: Verification canceled [2018-06-22 04:22:08,172 WARN ]: Timeout [2018-06-22 04:22:08,172 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:22:08 BoogieIcfgContainer [2018-06-22 04:22:08,172 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:22:08,173 INFO ]: Toolchain (without parser) took 66402.09 ms. Allocated memory was 327.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 281.4 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:22:08,173 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:22:08,174 INFO ]: ChcToBoogie took 141.03 ms. Allocated memory is still 327.7 MB. Free memory was 281.4 MB in the beginning and 276.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 3.6 GB. [2018-06-22 04:22:08,174 INFO ]: Boogie Preprocessor took 82.92 ms. Allocated memory is still 327.7 MB. Free memory was 276.8 MB in the beginning and 274.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 3.6 GB. [2018-06-22 04:22:08,174 INFO ]: RCFGBuilder took 798.09 ms. Allocated memory is still 327.7 MB. Free memory was 274.5 MB in the beginning and 181.9 MB in the end (delta: 92.6 MB). Peak memory consumption was 92.6 MB. Max. memory is 3.6 GB. [2018-06-22 04:22:08,175 INFO ]: TraceAbstraction took 65371.53 ms. Allocated memory was 327.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 179.7 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 04:22:08,178 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 309.3 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 141.03 ms. Allocated memory is still 327.7 MB. Free memory was 281.4 MB in the beginning and 276.8 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 82.92 ms. Allocated memory is still 327.7 MB. Free memory was 276.8 MB in the beginning and 274.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 3.6 GB. * RCFGBuilder took 798.09 ms. Allocated memory is still 327.7 MB. Free memory was 274.5 MB in the beginning and 181.9 MB in the end (delta: 92.6 MB). Peak memory consumption was 92.6 MB. Max. memory is 3.6 GB. * TraceAbstraction took 65371.53 ms. Allocated memory was 327.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 179.7 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 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 12 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was transforming 1 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 65.2s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 2 SDslu, 48 SDs, 0 SdLazy, 28 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=4, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 36.3s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 5788 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1521 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/20 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/floppy_simpl3_BUG.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-22-08-189.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/floppy_simpl3_BUG.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-22-08-189.csv Completed graceful shutdown