java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_13.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:36:00,271 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:36:00,274 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:36:00,287 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:36:00,287 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:36:00,291 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:36:00,292 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:36:00,294 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:36:00,295 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:36:00,297 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:36:00,298 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:36:00,298 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:36:00,299 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:36:00,300 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:36:00,304 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:36:00,305 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:36:00,307 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:36:00,319 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:36:00,321 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:36:00,322 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:36:00,323 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:36:00,325 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:36:00,325 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:36:00,325 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:36:00,326 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:36:00,326 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:36:00,327 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:36:00,332 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:36:00,333 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:36:00,333 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:36:00,334 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:36:00,334 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:36:00,335 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:36:00,335 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:36:00,338 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:36:00,338 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:36:00,354 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:36:00,355 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:36:00,355 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:36:00,355 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:36:00,357 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:36:00,357 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:36:00,357 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:36:00,358 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:36:00,358 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:36:00,358 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:36:00,358 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:36:00,358 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:36:00,359 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:36:00,359 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:36:00,359 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:36:00,359 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:36:00,359 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:36:00,364 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:36:00,364 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:36:00,421 INFO ]: Repository-Root is: /tmp [2018-06-22 04:36:00,438 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:36:00,441 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:36:00,442 INFO ]: Initializing SmtParser... [2018-06-22 04:36:00,443 INFO ]: SmtParser initialized [2018-06-22 04:36:00,443 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_13.cil.smt2 [2018-06-22 04:36:00,444 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 04:36:00,534 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_13.cil.smt2 unknown [2018-06-22 04:36:01,161 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_13.cil.smt2 [2018-06-22 04:36:01,165 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:36:01,180 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:36:01,181 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:36:01,181 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:36:01,181 INFO ]: ChcToBoogie initialized [2018-06-22 04:36:01,184 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:36:01" (1/1) ... [2018-06-22 04:36:01,312 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:01 Unit [2018-06-22 04:36:01,312 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:36:01,313 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:36:01,313 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:36:01,313 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:36:01,333 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:01" (1/1) ... [2018-06-22 04:36:01,334 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:01" (1/1) ... [2018-06-22 04:36:01,354 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:01" (1/1) ... [2018-06-22 04:36:01,354 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:01" (1/1) ... [2018-06-22 04:36:01,384 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:01" (1/1) ... [2018-06-22 04:36:01,385 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:01" (1/1) ... [2018-06-22 04:36:01,389 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:01" (1/1) ... [2018-06-22 04:36:01,402 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:36:01,403 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:36:01,403 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:36:01,403 INFO ]: RCFGBuilder initialized [2018-06-22 04:36:01,404 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:01" (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 04:36:01,418 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:36:01,418 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:36:01,418 INFO ]: Found implementation of procedure gotoProc Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:36:01,418 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:36:01,418 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:36:01,418 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 04:36:01,858 INFO ]: Using library mode [2018-06-22 04:36:01,858 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:36:01 BoogieIcfgContainer [2018-06-22 04:36:01,858 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:36:01,860 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:36:01,860 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:36:01,868 INFO ]: TraceAbstraction initialized [2018-06-22 04:36:01,868 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:36:01" (1/3) ... [2018-06-22 04:36:01,869 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3661cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:36:01, skipping insertion in model container [2018-06-22 04:36:01,869 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:01" (2/3) ... [2018-06-22 04:36:01,870 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3661cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:36:01, skipping insertion in model container [2018-06-22 04:36:01,870 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:36:01" (3/3) ... [2018-06-22 04:36:01,871 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:36:01,880 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:36:01,890 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:36:01,939 INFO ]: Using default assertion order modulation [2018-06-22 04:36:01,940 INFO ]: Interprodecural is true [2018-06-22 04:36:01,940 INFO ]: Hoare is false [2018-06-22 04:36:01,940 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:36:01,940 INFO ]: Backedges is TWOTRACK [2018-06-22 04:36:01,940 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:36:01,940 INFO ]: Difference is false [2018-06-22 04:36:01,940 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:36:01,940 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:36:01,956 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:36:01,968 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:36:01,968 INFO ]: Found error trace [2018-06-22 04:36:01,969 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:36:01,969 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:36:01,973 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 04:36:01,974 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:36:01,975 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:36:02,008 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:02,008 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:36:02,008 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:02,079 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:02,165 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:02,167 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:36:02,167 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:36:02,168 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:36:02,178 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:36:02,178 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:36:02,180 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:36:02,285 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:36:02,285 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:36:02,287 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:36:02,289 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:36:02,289 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:36:02,297 INFO ]: With dead ends: 9 [2018-06-22 04:36:02,298 INFO ]: Without dead ends: 9 [2018-06-22 04:36:02,301 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 04:36:02,325 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:36:02,340 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:36:02,341 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:36:02,341 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:36:02,342 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:36:02,342 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:36:02,342 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:36:02,342 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:36:02,342 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:36:02,342 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:36:02,343 INFO ]: Found error trace [2018-06-22 04:36:02,343 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:36:02,343 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:36:02,343 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 04:36:02,343 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:36:02,343 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:36:02,344 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:02,344 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:36:02,344 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:02,484 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:02,792 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:02,792 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:36:02,792 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 04:36:02,804 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:36:02,939 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:02,953 INFO ]: Computing forward predicates... [2018-06-22 04:36:03,603 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:03,623 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:36:03,623 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 04:36:03,624 INFO ]: Interpolant automaton has 6 states [2018-06-22 04:36:03,624 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 04:36:03,624 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 04:36:03,624 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 04:36:03,951 WARN ]: Spent 259.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-06-22 04:36:04,095 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:36:04,095 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:36:04,096 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:36:04,096 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 04:36:04,096 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:36:04,096 INFO ]: With dead ends: 11 [2018-06-22 04:36:04,096 INFO ]: Without dead ends: 11 [2018-06-22 04:36:04,097 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-22 04:36:04,097 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:36:04,098 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:36:04,098 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:36:04,099 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:36:04,099 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:36:04,099 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:36:04,099 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:36:04,100 INFO ]: Interpolant automaton has 6 states. [2018-06-22 04:36:04,100 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:36:04,100 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:36:04,100 INFO ]: Found error trace [2018-06-22 04:36:04,100 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:36:04,100 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:36:04,100 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-22 04:36:04,100 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:36:04,100 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:36:04,101 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:04,101 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:36:04,101 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:04,247 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:04,493 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:04,494 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:36:04,494 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 04:36:04,499 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:36:04,654 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:36:04,654 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:04,666 INFO ]: Computing forward predicates... [2018-06-22 04:36:05,364 WARN ]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:36:06,804 WARN ]: Spent 770.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 20 [2018-06-22 04:36:07,071 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:07,100 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:36:07,156 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 04:36:07,156 INFO ]: Interpolant automaton has 10 states [2018-06-22 04:36:07,156 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 04:36:07,156 INFO ]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:36:07,156 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 04:36:07,359 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:36:07,360 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:36:07,360 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:36:07,360 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 04:36:07,360 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:36:07,360 INFO ]: With dead ends: 13 [2018-06-22 04:36:07,360 INFO ]: Without dead ends: 13 [2018-06-22 04:36:07,361 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2018-06-22 04:36:07,361 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:36:07,361 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:36:07,361 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:36:07,362 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:36:07,362 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 04:36:07,362 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:36:07,362 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:36:07,362 INFO ]: Interpolant automaton has 10 states. [2018-06-22 04:36:07,362 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:36:07,362 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:36:07,362 INFO ]: Found error trace [2018-06-22 04:36:07,362 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:36:07,362 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:36:07,363 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 3 times [2018-06-22 04:36:07,363 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:36:07,363 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:36:07,363 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:07,363 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:36:07,364 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:07,641 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:08,296 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:08,297 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:36:08,297 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 04:36:08,303 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:36:08,556 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 04:36:08,556 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:08,576 INFO ]: Computing forward predicates... [2018-06-22 04:36:11,155 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 22 [2018-06-22 04:36:32,866 WARN ]: Spent 14.04 s on a formula simplification. DAG size of input: 738 DAG size of output: 229 [2018-06-22 04:36:41,520 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:41,556 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:36:41,556 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 04:36:41,556 INFO ]: Interpolant automaton has 14 states [2018-06-22 04:36:41,556 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 04:36:41,557 INFO ]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-06-22 04:36:41,557 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-22 04:36:42,311 WARN ]: Spent 604.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 12 [2018-06-22 04:36:43,432 WARN ]: Spent 1.03 s on a formula simplification. DAG size of input: 246 DAG size of output: 124 [2018-06-22 04:36:44,391 WARN ]: Spent 915.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 129 [2018-06-22 04:36:45,679 WARN ]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 235 [2018-06-22 04:36:46,340 WARN ]: Spent 562.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 7 [2018-06-22 04:36:46,341 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:36:46,341 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 04:36:46,341 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 04:36:46,341 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-22 04:36:46,341 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:36:46,341 INFO ]: With dead ends: 15 [2018-06-22 04:36:46,341 INFO ]: Without dead ends: 15 [2018-06-22 04:36:46,342 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2018-06-22 04:36:46,342 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 04:36:46,343 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 04:36:46,343 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 04:36:46,344 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 04:36:46,344 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-22 04:36:46,344 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:36:46,344 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 04:36:46,344 INFO ]: Interpolant automaton has 14 states. [2018-06-22 04:36:46,344 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 04:36:46,344 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 04:36:46,344 INFO ]: Found error trace [2018-06-22 04:36:46,344 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:36:46,344 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:36:46,345 INFO ]: Analyzing trace with hash 726730004, now seen corresponding path program 4 times [2018-06-22 04:36:46,345 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:36:46,345 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:36:46,345 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:46,345 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:36:46,345 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:46,810 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:49,019 WARN ]: Spent 1.53 s on a formula simplification. DAG size of input: 70 DAG size of output: 36 [2018-06-22 04:36:49,389 WARN ]: Spent 265.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 31 [2018-06-22 04:36:49,516 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 32 [2018-06-22 04:36:49,631 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:49,631 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:36:49,631 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 04:36:49,640 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 04:36:49,949 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:36:49,949 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:49,970 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 04:37:01,224 WARN ]: Removed 31 from assertion stack [2018-06-22 04:37:01,224 INFO ]: Timeout while computing interpolants [2018-06-22 04:37:01,424 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:37:01,424 WARN ]: Verification canceled [2018-06-22 04:37:01,428 WARN ]: Timeout [2018-06-22 04:37:01,428 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:37:01 BoogieIcfgContainer [2018-06-22 04:37:01,428 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:37:01,429 INFO ]: Toolchain (without parser) took 60262.98 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 234.0 MB in the beginning and 268.5 MB in the end (delta: -34.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:37:01,430 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 303.6 MB. Free memory is still 268.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:37:01,430 INFO ]: ChcToBoogie took 131.87 ms. Allocated memory is still 303.6 MB. Free memory was 234.0 MB in the beginning and 232.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:37:01,430 INFO ]: Boogie Preprocessor took 89.64 ms. Allocated memory is still 303.6 MB. Free memory was 232.0 MB in the beginning and 230.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:37:01,431 INFO ]: RCFGBuilder took 455.57 ms. Allocated memory is still 303.6 MB. Free memory was 230.1 MB in the beginning and 198.0 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:37:01,435 INFO ]: TraceAbstraction took 59567.82 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 198.0 MB in the beginning and 268.5 MB in the end (delta: -70.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 04:37:01,437 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 303.6 MB. Free memory is still 268.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 131.87 ms. Allocated memory is still 303.6 MB. Free memory was 234.0 MB in the beginning and 232.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 89.64 ms. Allocated memory is still 303.6 MB. Free memory was 232.0 MB in the beginning and 230.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 455.57 ms. Allocated memory is still 303.6 MB. Free memory was 230.1 MB in the beginning and 198.0 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 59567.82 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 198.0 MB in the beginning and 268.5 MB in the end (delta: -70.4 MB). 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 15 with TraceHistMax 7, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 374. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 59.4s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 5.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 4 SDslu, 94 SDs, 0 SdLazy, 42 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 22.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 37.3s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 15279 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1365 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/44 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_13.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-37-01-447.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_13.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-37-01-447.csv Completed graceful shutdown