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_14.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:36:24,219 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:36:24,221 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:36:24,235 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:36:24,236 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:36:24,237 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:36:24,238 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:36:24,245 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:36:24,247 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:36:24,248 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:36:24,250 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:36:24,250 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:36:24,251 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:36:24,252 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:36:24,253 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:36:24,256 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:36:24,258 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:36:24,260 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:36:24,272 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:36:24,273 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:36:24,274 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:36:24,276 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:36:24,277 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:36:24,277 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:36:24,277 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:36:24,278 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:36:24,279 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:36:24,280 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:36:24,286 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:36:24,286 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:36:24,286 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:36:24,287 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:36:24,287 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:36:24,288 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:36:24,288 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:36:24,289 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:36:24,314 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:36:24,314 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:36:24,314 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:36:24,315 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:36:24,316 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:36:24,316 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:36:24,316 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:36:24,316 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:36:24,316 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:36:24,316 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:36:24,317 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:36:24,317 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:36:24,318 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:36:24,318 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:36:24,318 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:36:24,318 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:36:24,318 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:36:24,320 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:36:24,320 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:36:24,368 INFO ]: Repository-Root is: /tmp [2018-06-22 04:36:24,383 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:36:24,389 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:36:24,390 INFO ]: Initializing SmtParser... [2018-06-22 04:36:24,390 INFO ]: SmtParser initialized [2018-06-22 04:36:24,391 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_14.cil.smt2 [2018-06-22 04:36:24,392 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 04:36:24,480 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_14.cil.smt2 unknown [2018-06-22 04:36:25,094 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_14.cil.smt2 [2018-06-22 04:36:25,098 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:36:25,104 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:36:25,105 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:36:25,105 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:36:25,105 INFO ]: ChcToBoogie initialized [2018-06-22 04:36:25,108 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:36:25" (1/1) ... [2018-06-22 04:36:25,207 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:25 Unit [2018-06-22 04:36:25,207 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:36:25,208 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:36:25,208 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:36:25,208 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:36:25,265 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:25" (1/1) ... [2018-06-22 04:36:25,265 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:25" (1/1) ... [2018-06-22 04:36:25,277 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:25" (1/1) ... [2018-06-22 04:36:25,277 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:25" (1/1) ... [2018-06-22 04:36:25,298 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:25" (1/1) ... [2018-06-22 04:36:25,305 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:25" (1/1) ... [2018-06-22 04:36:25,312 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:25" (1/1) ... [2018-06-22 04:36:25,318 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:36:25,318 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:36:25,318 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:36:25,318 INFO ]: RCFGBuilder initialized [2018-06-22 04:36:25,319 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:25" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:36:25,333 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:36:25,333 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:36:25,333 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:36:25,333 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:36:25,333 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:36:25,333 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 04:36:25,752 INFO ]: Using library mode [2018-06-22 04:36:25,765 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:36:25 BoogieIcfgContainer [2018-06-22 04:36:25,765 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:36:25,766 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:36:25,766 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:36:25,770 INFO ]: TraceAbstraction initialized [2018-06-22 04:36:25,771 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:36:25" (1/3) ... [2018-06-22 04:36:25,772 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84064df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:36:25, skipping insertion in model container [2018-06-22 04:36:25,772 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:36:25" (2/3) ... [2018-06-22 04:36:25,772 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84064df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:36:25, skipping insertion in model container [2018-06-22 04:36:25,772 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:36:25" (3/3) ... [2018-06-22 04:36:25,774 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:36:25,784 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:36:25,794 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:36:25,837 INFO ]: Using default assertion order modulation [2018-06-22 04:36:25,837 INFO ]: Interprodecural is true [2018-06-22 04:36:25,837 INFO ]: Hoare is false [2018-06-22 04:36:25,837 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:36:25,838 INFO ]: Backedges is TWOTRACK [2018-06-22 04:36:25,838 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:36:25,838 INFO ]: Difference is false [2018-06-22 04:36:25,838 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:36:25,838 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:36:25,856 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:36:25,873 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:36:25,873 INFO ]: Found error trace [2018-06-22 04:36:25,874 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:36:25,874 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:36:25,878 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 04:36:25,879 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:36:25,880 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:36:25,912 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:25,912 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:36:25,912 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:25,980 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:26,093 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:26,094 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:36:26,095 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:36:26,096 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:36:26,111 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:36:26,111 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:36:26,114 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:36:26,230 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:36:26,230 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:36:26,230 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:36:26,232 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:36:26,232 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:36:26,240 INFO ]: With dead ends: 9 [2018-06-22 04:36:26,240 INFO ]: Without dead ends: 9 [2018-06-22 04:36:26,242 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 04:36:26,260 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:36:26,273 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:36:26,274 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:36:26,274 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:36:26,275 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:36:26,275 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:36:26,275 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:36:26,275 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:36:26,276 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:36:26,276 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:36:26,276 INFO ]: Found error trace [2018-06-22 04:36:26,276 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:36:26,276 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:36:26,276 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 04:36:26,276 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:36:26,276 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:36:26,277 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:26,277 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:36:26,277 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:26,436 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:26,659 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:26,659 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:36:26,659 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 04:36:26,666 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:36:26,810 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:26,825 INFO ]: Computing forward predicates... [2018-06-22 04:36:27,700 WARN ]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:36:27,719 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:27,752 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:36:27,752 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 04:36:27,753 INFO ]: Interpolant automaton has 6 states [2018-06-22 04:36:27,753 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 04:36:27,753 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 04:36:27,753 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 04:36:28,045 WARN ]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 04:36:28,185 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:36:28,186 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:36:28,186 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:36:28,186 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 04:36:28,187 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:36:28,187 INFO ]: With dead ends: 11 [2018-06-22 04:36:28,187 INFO ]: Without dead ends: 11 [2018-06-22 04:36:28,188 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-22 04:36:28,188 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:36:28,189 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:36:28,189 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:36:28,189 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:36:28,189 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:36:28,189 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:36:28,190 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:36:28,190 INFO ]: Interpolant automaton has 6 states. [2018-06-22 04:36:28,190 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:36:28,190 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:36:28,190 INFO ]: Found error trace [2018-06-22 04:36:28,190 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:36:28,190 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:36:28,190 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 04:36:28,190 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:36:28,190 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:36:28,191 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:28,191 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:36:28,191 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:28,381 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:29,128 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:29,128 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:36:29,128 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) [2018-06-22 04:36:29,143 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:36:29,299 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:36:29,299 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:29,313 INFO ]: Computing forward predicates... [2018-06-22 04:36:31,323 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:31,344 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:36:31,443 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 04:36:31,443 INFO ]: Interpolant automaton has 10 states [2018-06-22 04:36:31,444 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 04:36:31,444 INFO ]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:36:31,444 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 04:36:31,630 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:36:31,630 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 04:36:31,631 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 04:36:31,631 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 04:36:31,631 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:36:31,632 INFO ]: With dead ends: 12 [2018-06-22 04:36:31,632 INFO ]: Without dead ends: 12 [2018-06-22 04:36:31,632 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:36:31,632 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 04:36:31,634 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 04:36:31,634 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 04:36:31,634 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 04:36:31,635 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 04:36:31,635 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:36:31,635 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 04:36:31,635 INFO ]: Interpolant automaton has 10 states. [2018-06-22 04:36:31,635 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 04:36:31,635 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 04:36:31,635 INFO ]: Found error trace [2018-06-22 04:36:31,635 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:36:31,635 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:36:31,635 INFO ]: Analyzing trace with hash -1433955954, now seen corresponding path program 3 times [2018-06-22 04:36:31,635 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:36:31,635 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:36:31,636 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:31,636 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:36:31,636 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:31,782 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:32,179 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:32,179 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:36:32,179 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 04:36:32,188 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:36:32,382 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 04:36:32,382 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:32,395 INFO ]: Computing forward predicates... [2018-06-22 04:36:34,352 WARN ]: Spent 485.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-06-22 04:36:38,362 WARN ]: Spent 2.50 s on a formula simplification. DAG size of input: 305 DAG size of output: 117 [2018-06-22 04:36:46,857 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:46,891 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:36:46,891 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-22 04:36:46,892 INFO ]: Interpolant automaton has 12 states [2018-06-22 04:36:46,892 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 04:36:46,892 INFO ]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-22 04:36:46,892 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-06-22 04:36:47,141 WARN ]: Spent 160.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 34 [2018-06-22 04:36:47,411 WARN ]: Spent 239.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2018-06-22 04:36:47,831 WARN ]: Spent 391.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2018-06-22 04:36:47,855 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:36:47,856 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 04:36:47,857 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 04:36:47,857 INFO ]: Start accepts. Automaton has 12 states. Word has length 11 [2018-06-22 04:36:47,857 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:36:47,858 INFO ]: With dead ends: 14 [2018-06-22 04:36:47,858 INFO ]: Without dead ends: 14 [2018-06-22 04:36:47,858 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2018-06-22 04:36:47,858 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 04:36:47,860 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 04:36:47,860 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 04:36:47,860 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 04:36:47,860 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-06-22 04:36:47,860 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:36:47,860 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 04:36:47,860 INFO ]: Interpolant automaton has 12 states. [2018-06-22 04:36:47,860 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 04:36:47,861 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 04:36:47,861 INFO ]: Found error trace [2018-06-22 04:36:47,861 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:36:47,861 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:36:47,861 INFO ]: Analyzing trace with hash 679342766, now seen corresponding path program 4 times [2018-06-22 04:36:47,861 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:36:47,861 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:36:47,862 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:47,862 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:36:47,862 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:36:48,098 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:48,846 WARN ]: Spent 164.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 3 [2018-06-22 04:36:49,179 WARN ]: Spent 187.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 30 [2018-06-22 04:36:49,263 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:36:49,264 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:36:49,264 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 04:36:49,269 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 04:36:49,574 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:36:49,574 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:36:49,597 INFO ]: Computing forward predicates... [2018-06-22 04:36:50,341 WARN ]: Spent 157.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 16 [2018-06-22 04:36:50,914 WARN ]: Spent 319.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 23 [2018-06-22 04:36:55,085 WARN ]: Simplifying disjunction of 6442 conjuctions. This might take some time... [2018-06-22 04:36:57,320 INFO ]: Simplified to disjunction of 6442 conjuctions. [2018-06-22 04:36:57,432 WARN ]: Simplifying disjunction of 6443 conjuctions. This might take some time... [2018-06-22 04:36:59,817 INFO ]: Simplified to disjunction of 6443 conjuctions. Received shutdown request... [2018-06-22 04:37:27,702 INFO ]: Timeout while computing interpolants [2018-06-22 04:37:27,903 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:37:27,903 WARN ]: Verification canceled [2018-06-22 04:37:27,907 WARN ]: Timeout [2018-06-22 04:37:27,909 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:37:27 BoogieIcfgContainer [2018-06-22 04:37:27,909 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:37:27,910 INFO ]: Toolchain (without parser) took 62810.98 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 241.9 MB in the beginning and 1.1 GB in the end (delta: -815.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:37:27,911 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:37:27,911 INFO ]: ChcToBoogie took 103.08 ms. Allocated memory is still 309.3 MB. Free memory was 241.9 MB in the beginning and 238.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:37:27,911 INFO ]: Boogie Preprocessor took 109.56 ms. Allocated memory is still 309.3 MB. Free memory was 238.9 MB in the beginning and 236.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:37:27,912 INFO ]: RCFGBuilder took 447.08 ms. Allocated memory is still 309.3 MB. Free memory was 236.9 MB in the beginning and 203.8 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 3.6 GB. [2018-06-22 04:37:27,912 INFO ]: TraceAbstraction took 62142.73 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 203.8 MB in the beginning and 1.1 GB in the end (delta: -853.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:37:27,915 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 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 103.08 ms. Allocated memory is still 309.3 MB. Free memory was 241.9 MB in the beginning and 238.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 109.56 ms. Allocated memory is still 309.3 MB. Free memory was 238.9 MB in the beginning and 236.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 447.08 ms. Allocated memory is still 309.3 MB. Free memory was 236.9 MB in the beginning and 203.8 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 62142.73 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 203.8 MB in the beginning and 1.1 GB in the end (delta: -853.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 14 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 394 quantified variables from 89 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 62.0s OverallTime, 5 OverallIterations, 6 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 5 SDslu, 88 SDs, 0 SdLazy, 38 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 0.8s SatisfiabilityAnalysisTime, 18.8s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 4524 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1277 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/34 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_14.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-37-27-932.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_14.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-37-27-932.csv Completed graceful shutdown