java -Xss4m -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/eldarica-misc/LIA/HOLA/28.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:47:05,464 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:47:05,466 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:47:05,481 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:47:05,482 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:47:05,483 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:47:05,484 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:47:05,485 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:47:05,487 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:47:05,488 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:47:05,489 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:47:05,489 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:47:05,490 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:47:05,491 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:47:05,492 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:47:05,492 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:47:05,497 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:47:05,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:47:05,512 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:47:05,513 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:47:05,514 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:47:05,516 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:47:05,517 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:47:05,517 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:47:05,518 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:47:05,519 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:47:05,519 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:47:05,520 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:47:05,527 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:47:05,528 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:47:05,528 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:47:05,529 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:47:05,529 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:47:05,530 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:47:05,530 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:47:05,531 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:47:05,549 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:47:05,549 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:47:05,550 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:47:05,550 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:47:05,551 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:47:05,551 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:47:05,551 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:47:05,551 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:47:05,552 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:47:05,552 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:47:05,552 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:47:05,552 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:47:05,552 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:47:05,552 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:47:05,553 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:47:05,553 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:47:05,553 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:47:05,553 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:47:05,553 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:47:05,554 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:47:05,554 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:47:05,555 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:47:05,555 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:47:05,612 INFO ]: Repository-Root is: /tmp [2018-06-25 08:47:05,625 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:47:05,634 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:47:05,636 INFO ]: Initializing SmtParser... [2018-06-25 08:47:05,636 INFO ]: SmtParser initialized [2018-06-25 08:47:05,637 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/28.c.smt2 [2018-06-25 08:47:05,638 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 [2018-06-25 08:47:05,731 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/28.c.smt2 unknown [2018-06-25 08:47:06,063 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/28.c.smt2 [2018-06-25 08:47:06,069 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:47:06,074 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:47:06,074 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:47:06,074 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:47:06,075 INFO ]: ChcToBoogie initialized [2018-06-25 08:47:06,081 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:47:06" (1/1) ... [2018-06-25 08:47:06,145 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:47:06 Unit [2018-06-25 08:47:06,145 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:47:06,146 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:47:06,146 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:47:06,146 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:47:06,181 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:47:06" (1/1) ... [2018-06-25 08:47:06,181 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:47:06" (1/1) ... [2018-06-25 08:47:06,198 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:47:06" (1/1) ... [2018-06-25 08:47:06,198 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:47:06" (1/1) ... [2018-06-25 08:47:06,206 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:47:06" (1/1) ... [2018-06-25 08:47:06,208 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:47:06" (1/1) ... [2018-06-25 08:47:06,209 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:47:06" (1/1) ... [2018-06-25 08:47:06,215 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:47:06,215 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:47:06,215 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:47:06,215 INFO ]: RCFGBuilder initialized [2018-06-25 08:47:06,216 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:47:06" (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) [2018-06-25 08:47:06,244 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:47:06,244 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:47:06,244 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:47:06,244 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:47:06,244 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:47:06,244 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 [2018-06-25 08:47:06,906 INFO ]: Using library mode [2018-06-25 08:47:06,906 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:47:06 BoogieIcfgContainer [2018-06-25 08:47:06,907 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:47:06,907 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:47:06,907 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:47:06,912 INFO ]: TraceAbstraction initialized [2018-06-25 08:47:06,912 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:47:06" (1/3) ... [2018-06-25 08:47:06,913 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db6c988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:47:06, skipping insertion in model container [2018-06-25 08:47:06,913 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:47:06" (2/3) ... [2018-06-25 08:47:06,913 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db6c988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:47:06, skipping insertion in model container [2018-06-25 08:47:06,913 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:47:06" (3/3) ... [2018-06-25 08:47:06,915 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:47:06,922 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:47:06,928 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:47:06,965 INFO ]: Using default assertion order modulation [2018-06-25 08:47:06,966 INFO ]: Interprodecural is true [2018-06-25 08:47:06,966 INFO ]: Hoare is false [2018-06-25 08:47:06,966 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:47:06,966 INFO ]: Backedges is TWOTRACK [2018-06-25 08:47:06,966 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:47:06,966 INFO ]: Difference is false [2018-06-25 08:47:06,966 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:47:06,966 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:47:06,979 INFO ]: Start isEmpty. Operand 36 states. [2018-06-25 08:47:06,991 INFO ]: Finished isEmpty. Found accepting run of length 27 [2018-06-25 08:47:06,991 INFO ]: Found error trace [2018-06-25 08:47:06,992 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:47:06,992 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:47:06,999 INFO ]: Analyzing trace with hash -1437442694, now seen corresponding path program 1 times [2018-06-25 08:47:07,001 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:47:07,001 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:47:07,035 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:47:07,035 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:47:07,035 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:47:07,120 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:47:08,091 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:47:08,098 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:47:08,098 INFO ]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2018-06-25 08:47:08,100 INFO ]: Interpolant automaton has 20 states [2018-06-25 08:47:08,113 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-25 08:47:08,114 INFO ]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-06-25 08:47:08,116 INFO ]: Start difference. First operand 36 states. Second operand 20 states. [2018-06-25 08:47:09,416 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:47:09,416 INFO ]: Finished difference Result 71 states and 80 transitions. [2018-06-25 08:47:09,416 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-06-25 08:47:09,417 INFO ]: Start accepts. Automaton has 20 states. Word has length 26 [2018-06-25 08:47:09,418 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:47:09,430 INFO ]: With dead ends: 71 [2018-06-25 08:47:09,430 INFO ]: Without dead ends: 68 [2018-06-25 08:47:09,432 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=493, Invalid=1147, Unknown=0, NotChecked=0, Total=1640 [2018-06-25 08:47:09,449 INFO ]: Start minimizeSevpa. Operand 68 states. [2018-06-25 08:47:09,468 INFO ]: Finished minimizeSevpa. Reduced states from 68 to 45. [2018-06-25 08:47:09,469 INFO ]: Start removeUnreachable. Operand 45 states. [2018-06-25 08:47:09,471 INFO ]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-06-25 08:47:09,472 INFO ]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 26 [2018-06-25 08:47:09,472 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:47:09,472 INFO ]: Abstraction has 45 states and 50 transitions. [2018-06-25 08:47:09,472 INFO ]: Interpolant automaton has 20 states. [2018-06-25 08:47:09,472 INFO ]: Start isEmpty. Operand 45 states and 50 transitions. [2018-06-25 08:47:09,473 INFO ]: Finished isEmpty. Found accepting run of length 31 [2018-06-25 08:47:09,473 INFO ]: Found error trace [2018-06-25 08:47:09,473 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:47:09,473 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:47:09,474 INFO ]: Analyzing trace with hash 289146020, now seen corresponding path program 1 times [2018-06-25 08:47:09,474 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:47:09,474 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:47:09,475 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:47:09,475 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:47:09,475 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:47:09,532 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:47:10,021 INFO ]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:47:10,021 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:47:10,021 INFO ]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2018-06-25 08:47:10,023 INFO ]: Interpolant automaton has 20 states [2018-06-25 08:47:10,023 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-25 08:47:10,023 INFO ]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2018-06-25 08:47:10,023 INFO ]: Start difference. First operand 45 states and 50 transitions. Second operand 20 states. [2018-06-25 08:47:11,716 WARN ]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-06-25 08:47:11,993 WARN ]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2018-06-25 08:47:12,894 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:47:12,895 INFO ]: Finished difference Result 193 states and 220 transitions. [2018-06-25 08:47:12,972 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-06-25 08:47:12,972 INFO ]: Start accepts. Automaton has 20 states. Word has length 30 [2018-06-25 08:47:12,972 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:47:12,975 INFO ]: With dead ends: 193 [2018-06-25 08:47:12,975 INFO ]: Without dead ends: 187 [2018-06-25 08:47:12,977 INFO ]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1041, Invalid=2499, Unknown=0, NotChecked=0, Total=3540 [2018-06-25 08:47:12,977 INFO ]: Start minimizeSevpa. Operand 187 states. [2018-06-25 08:47:12,986 INFO ]: Finished minimizeSevpa. Reduced states from 187 to 45. [2018-06-25 08:47:12,986 INFO ]: Start removeUnreachable. Operand 45 states. [2018-06-25 08:47:12,987 INFO ]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-06-25 08:47:12,987 INFO ]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 30 [2018-06-25 08:47:12,988 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:47:12,988 INFO ]: Abstraction has 45 states and 50 transitions. [2018-06-25 08:47:12,988 INFO ]: Interpolant automaton has 20 states. [2018-06-25 08:47:12,988 INFO ]: Start isEmpty. Operand 45 states and 50 transitions. [2018-06-25 08:47:12,989 INFO ]: Finished isEmpty. Found accepting run of length 31 [2018-06-25 08:47:12,989 INFO ]: Found error trace [2018-06-25 08:47:12,989 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:47:12,989 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:47:12,989 INFO ]: Analyzing trace with hash 2077521124, now seen corresponding path program 1 times [2018-06-25 08:47:12,989 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:47:12,989 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:47:12,990 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:47:12,990 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:47:12,990 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:47:13,010 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:47:13,317 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:47:13,317 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:47:13,317 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 [2018-06-25 08:47:13,329 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:47:13,400 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:47:13,410 INFO ]: Computing forward predicates... [2018-06-25 08:47:13,620 INFO ]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:47:13,640 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-25 08:47:13,640 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [24] total 28 [2018-06-25 08:47:13,640 INFO ]: Interpolant automaton has 28 states [2018-06-25 08:47:13,640 INFO ]: Constructing interpolant automaton starting with 28 interpolants. [2018-06-25 08:47:13,641 INFO ]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2018-06-25 08:47:13,641 INFO ]: Start difference. First operand 45 states and 50 transitions. Second operand 28 states. [2018-06-25 08:47:15,026 WARN ]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-06-25 08:47:15,501 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:47:15,501 INFO ]: Finished difference Result 150 states and 166 transitions. [2018-06-25 08:47:15,502 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-06-25 08:47:15,502 INFO ]: Start accepts. Automaton has 28 states. Word has length 30 [2018-06-25 08:47:15,502 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:47:15,504 INFO ]: With dead ends: 150 [2018-06-25 08:47:15,504 INFO ]: Without dead ends: 147 [2018-06-25 08:47:15,505 INFO ]: 0 DeclaredPredicates, 79 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=578, Invalid=2284, Unknown=0, NotChecked=0, Total=2862 [2018-06-25 08:47:15,505 INFO ]: Start minimizeSevpa. Operand 147 states. [2018-06-25 08:47:15,510 INFO ]: Finished minimizeSevpa. Reduced states from 147 to 37. [2018-06-25 08:47:15,511 INFO ]: Start removeUnreachable. Operand 37 states. [2018-06-25 08:47:15,511 INFO ]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-06-25 08:47:15,511 INFO ]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 30 [2018-06-25 08:47:15,512 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:47:15,512 INFO ]: Abstraction has 37 states and 40 transitions. [2018-06-25 08:47:15,512 INFO ]: Interpolant automaton has 28 states. [2018-06-25 08:47:15,512 INFO ]: Start isEmpty. Operand 37 states and 40 transitions. [2018-06-25 08:47:15,512 INFO ]: Finished isEmpty. Found accepting run of length 33 [2018-06-25 08:47:15,512 INFO ]: Found error trace [2018-06-25 08:47:15,512 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:47:15,513 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:47:15,513 INFO ]: Analyzing trace with hash 1258021808, now seen corresponding path program 1 times [2018-06-25 08:47:15,513 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:47:15,513 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:47:15,513 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:47:15,513 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:47:15,513 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:47:15,543 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:47:15,624 INFO ]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:47:15,624 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:47:15,624 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-25 08:47:15,624 INFO ]: Interpolant automaton has 8 states [2018-06-25 08:47:15,624 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 08:47:15,624 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-25 08:47:15,624 INFO ]: Start difference. First operand 37 states and 40 transitions. Second operand 8 states. [2018-06-25 08:47:15,729 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:47:15,729 INFO ]: Finished difference Result 50 states and 54 transitions. [2018-06-25 08:47:15,729 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-25 08:47:15,729 INFO ]: Start accepts. Automaton has 8 states. Word has length 32 [2018-06-25 08:47:15,729 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:47:15,730 INFO ]: With dead ends: 50 [2018-06-25 08:47:15,730 INFO ]: Without dead ends: 49 [2018-06-25 08:47:15,730 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2018-06-25 08:47:15,730 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-25 08:47:15,734 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 38. [2018-06-25 08:47:15,734 INFO ]: Start removeUnreachable. Operand 38 states. [2018-06-25 08:47:15,735 INFO ]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-06-25 08:47:15,735 INFO ]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 32 [2018-06-25 08:47:15,735 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:47:15,735 INFO ]: Abstraction has 38 states and 41 transitions. [2018-06-25 08:47:15,735 INFO ]: Interpolant automaton has 8 states. [2018-06-25 08:47:15,735 INFO ]: Start isEmpty. Operand 38 states and 41 transitions. [2018-06-25 08:47:15,737 INFO ]: Finished isEmpty. Found accepting run of length 33 [2018-06-25 08:47:15,737 INFO ]: Found error trace [2018-06-25 08:47:15,737 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:47:15,737 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:47:15,737 INFO ]: Analyzing trace with hash 929381232, now seen corresponding path program 1 times [2018-06-25 08:47:15,737 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:47:15,737 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:47:15,738 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:47:15,738 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:47:15,738 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:47:15,760 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:47:15,828 INFO ]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:47:15,828 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:47:15,828 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-25 08:47:15,828 INFO ]: Interpolant automaton has 8 states [2018-06-25 08:47:15,828 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 08:47:15,828 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-25 08:47:15,828 INFO ]: Start difference. First operand 38 states and 41 transitions. Second operand 8 states. [2018-06-25 08:47:15,968 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:47:15,968 INFO ]: Finished difference Result 24 states and 25 transitions. [2018-06-25 08:47:15,968 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 08:47:15,968 INFO ]: Start accepts. Automaton has 8 states. Word has length 32 [2018-06-25 08:47:15,968 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:47:15,968 INFO ]: With dead ends: 24 [2018-06-25 08:47:15,969 INFO ]: Without dead ends: 0 [2018-06-25 08:47:15,969 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-06-25 08:47:15,969 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 08:47:15,969 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 08:47:15,969 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 08:47:15,969 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 08:47:15,969 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-06-25 08:47:15,969 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:47:15,969 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 08:47:15,969 INFO ]: Interpolant automaton has 8 states. [2018-06-25 08:47:15,969 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 08:47:15,969 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 08:47:15,973 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:47:15 BoogieIcfgContainer [2018-06-25 08:47:15,973 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:47:15,974 INFO ]: Toolchain (without parser) took 9904.88 ms. Allocated memory was 309.3 MB in the beginning and 420.5 MB in the end (delta: 111.1 MB). Free memory was 253.7 MB in the beginning and 194.6 MB in the end (delta: 59.1 MB). Peak memory consumption was 170.3 MB. Max. memory is 3.6 GB. [2018-06-25 08:47:15,975 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:47:15,975 INFO ]: ChcToBoogie took 70.95 ms. Allocated memory is still 309.3 MB. Free memory was 252.7 MB in the beginning and 250.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:47:15,976 INFO ]: Boogie Preprocessor took 69.07 ms. Allocated memory is still 309.3 MB. Free memory was 250.7 MB in the beginning and 248.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:47:15,976 INFO ]: RCFGBuilder took 691.39 ms. Allocated memory is still 309.3 MB. Free memory was 248.7 MB in the beginning and 221.6 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 3.6 GB. [2018-06-25 08:47:15,977 INFO ]: TraceAbstraction took 9066.01 ms. Allocated memory was 309.3 MB in the beginning and 420.5 MB in the end (delta: 111.1 MB). Free memory was 221.6 MB in the beginning and 194.6 MB in the end (delta: 27.1 MB). Peak memory consumption was 138.2 MB. Max. memory is 3.6 GB. [2018-06-25 08:47:15,987 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 70.95 ms. Allocated memory is still 309.3 MB. Free memory was 252.7 MB in the beginning and 250.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 69.07 ms. Allocated memory is still 309.3 MB. Free memory was 250.7 MB in the beginning and 248.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 691.39 ms. Allocated memory is still 309.3 MB. Free memory was 248.7 MB in the beginning and 221.6 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 9066.01 ms. Allocated memory was 309.3 MB in the beginning and 420.5 MB in the end (delta: 111.1 MB). Free memory was 221.6 MB in the beginning and 194.6 MB in the end (delta: 27.1 MB). Peak memory consumption was 138.2 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 1 error locations. SAFE Result, 9.0s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 6.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 172 SDtfs, 1975 SDslu, 2917 SDs, 0 SdLazy, 1119 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=1, 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, 5 MinimizatonAttempts, 286 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 13254 SizeOfPredicates, 10 NumberOfNonLiveVariables, 435 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 12/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/28.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-47-16-004.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/28.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-47-16-004.csv Received shutdown request...