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/vmt-chc-benchmarks/cav12/s3_clnt_1.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 12:08:27,154 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 12:08:27,156 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 12:08:27,170 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 12:08:27,170 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 12:08:27,171 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 12:08:27,172 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 12:08:27,174 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 12:08:27,175 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 12:08:27,176 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 12:08:27,177 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 12:08:27,177 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 12:08:27,178 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 12:08:27,179 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 12:08:27,180 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 12:08:27,181 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 12:08:27,182 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 12:08:27,184 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 12:08:27,186 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 12:08:27,187 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 12:08:27,188 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 12:08:27,190 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 12:08:27,190 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 12:08:27,190 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 12:08:27,191 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 12:08:27,192 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 12:08:27,193 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 12:08:27,194 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 12:08:27,195 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 12:08:27,195 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 12:08:27,196 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 12:08:27,196 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 12:08:27,196 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 12:08:27,197 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 12:08:27,198 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 12:08:27,198 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 12:08:27,212 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 12:08:27,212 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 12:08:27,212 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 12:08:27,213 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 12:08:27,214 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 12:08:27,214 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 12:08:27,214 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 12:08:27,214 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 12:08:27,215 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 12:08:27,215 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 12:08:27,215 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 12:08:27,215 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 12:08:27,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 12:08:27,215 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 12:08:27,216 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 12:08:27,216 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 12:08:27,216 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 12:08:27,216 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 12:08:27,216 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 12:08:27,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 12:08:27,217 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 12:08:27,218 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 12:08:27,218 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 12:08:27,269 INFO ]: Repository-Root is: /tmp [2018-06-25 12:08:27,282 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 12:08:27,285 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 12:08:27,287 INFO ]: Initializing SmtParser... [2018-06-25 12:08:27,287 INFO ]: SmtParser initialized [2018-06-25 12:08:27,288 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_clnt_1.cil.smt2 [2018-06-25 12:08:27,289 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 12:08:27,377 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_clnt_1.cil.smt2 unknown [2018-06-25 12:08:27,852 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_clnt_1.cil.smt2 [2018-06-25 12:08:27,857 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 12:08:27,861 INFO ]: Walking toolchain with 4 elements. [2018-06-25 12:08:27,862 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 12:08:27,862 INFO ]: Initializing ChcToBoogie... [2018-06-25 12:08:27,862 INFO ]: ChcToBoogie initialized [2018-06-25 12:08:27,865 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:08:27" (1/1) ... [2018-06-25 12:08:27,923 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:08:27 Unit [2018-06-25 12:08:27,924 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 12:08:27,924 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 12:08:27,924 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 12:08:27,924 INFO ]: Boogie Preprocessor initialized [2018-06-25 12:08:27,943 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:08:27" (1/1) ... [2018-06-25 12:08:27,943 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:08:27" (1/1) ... [2018-06-25 12:08:27,954 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:08:27" (1/1) ... [2018-06-25 12:08:27,954 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:08:27" (1/1) ... [2018-06-25 12:08:27,971 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:08:27" (1/1) ... [2018-06-25 12:08:27,982 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:08:27" (1/1) ... [2018-06-25 12:08:27,986 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:08:27" (1/1) ... [2018-06-25 12:08:27,990 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 12:08:27,990 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 12:08:27,990 INFO ]: Initializing RCFGBuilder... [2018-06-25 12:08:27,990 INFO ]: RCFGBuilder initialized [2018-06-25 12:08:27,991 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:08:27" (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 12:08:28,017 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 12:08:28,017 INFO ]: Found specification of procedure gotoProc [2018-06-25 12:08:28,017 INFO ]: Found implementation of procedure gotoProc [2018-06-25 12:08:28,017 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 12:08:28,017 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 12:08:28,017 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 12:08:28,415 INFO ]: Using library mode [2018-06-25 12:08:28,416 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:08:28 BoogieIcfgContainer [2018-06-25 12:08:28,416 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 12:08:28,421 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 12:08:28,421 INFO ]: Initializing TraceAbstraction... [2018-06-25 12:08:28,424 INFO ]: TraceAbstraction initialized [2018-06-25 12:08:28,424 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:08:27" (1/3) ... [2018-06-25 12:08:28,425 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448df2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 12:08:28, skipping insertion in model container [2018-06-25 12:08:28,425 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:08:27" (2/3) ... [2018-06-25 12:08:28,425 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448df2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 12:08:28, skipping insertion in model container [2018-06-25 12:08:28,425 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:08:28" (3/3) ... [2018-06-25 12:08:28,427 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 12:08:28,434 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 12:08:28,440 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 12:08:28,473 INFO ]: Using default assertion order modulation [2018-06-25 12:08:28,474 INFO ]: Interprodecural is true [2018-06-25 12:08:28,474 INFO ]: Hoare is false [2018-06-25 12:08:28,474 INFO ]: Compute interpolants for FPandBP [2018-06-25 12:08:28,474 INFO ]: Backedges is TWOTRACK [2018-06-25 12:08:28,474 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 12:08:28,474 INFO ]: Difference is false [2018-06-25 12:08:28,474 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 12:08:28,474 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 12:08:28,485 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 12:08:28,494 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 12:08:28,494 INFO ]: Found error trace [2018-06-25 12:08:28,495 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:08:28,495 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:08:28,498 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 12:08:28,500 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:08:28,500 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:08:28,535 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:28,535 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:08:28,535 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:28,590 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:08:28,702 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:08:28,704 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 12:08:28,704 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 12:08:28,706 INFO ]: Interpolant automaton has 3 states [2018-06-25 12:08:28,715 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 12:08:28,716 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 12:08:28,719 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 12:08:28,827 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:08:28,827 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 12:08:28,830 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 12:08:28,831 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 12:08:28,831 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:08:28,842 INFO ]: With dead ends: 9 [2018-06-25 12:08:28,842 INFO ]: Without dead ends: 9 [2018-06-25 12:08:28,844 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 [2018-06-25 12:08:28,859 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 12:08:28,872 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 12:08:28,874 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 12:08:28,874 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 12:08:28,875 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 12:08:28,875 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:08:28,875 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 12:08:28,875 INFO ]: Interpolant automaton has 3 states. [2018-06-25 12:08:28,875 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 12:08:28,876 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 12:08:28,876 INFO ]: Found error trace [2018-06-25 12:08:28,876 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:08:28,876 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:08:28,876 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 12:08:28,876 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:08:28,877 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:08:28,878 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:28,878 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:08:28,878 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:29,034 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:08:29,360 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:08:29,360 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:08:29,360 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-25 12:08:29,379 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 12:08:29,519 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:08:29,532 INFO ]: Computing forward predicates... [2018-06-25 12:08:30,213 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-25 12:08:30,226 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:08:30,263 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:08:30,263 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-25 12:08:30,264 INFO ]: Interpolant automaton has 6 states [2018-06-25 12:08:30,264 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 12:08:30,264 INFO ]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-25 12:08:30,264 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-25 12:08:30,427 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:08:30,427 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 12:08:30,428 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 12:08:30,428 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-25 12:08:30,428 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:08:30,428 INFO ]: With dead ends: 10 [2018-06-25 12:08:30,428 INFO ]: Without dead ends: 10 [2018-06-25 12:08:30,429 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-06-25 12:08:30,429 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 12:08:30,430 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 12:08:30,430 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 12:08:30,430 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 12:08:30,431 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 12:08:30,431 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:08:30,431 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 12:08:30,431 INFO ]: Interpolant automaton has 6 states. [2018-06-25 12:08:30,432 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 12:08:30,432 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 12:08:30,432 INFO ]: Found error trace [2018-06-25 12:08:30,432 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:08:30,432 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:08:30,432 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-25 12:08:30,432 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:08:30,432 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:08:30,433 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:30,433 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:08:30,433 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:30,534 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:08:30,806 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:08:30,806 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:08:30,806 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 [2018-06-25 12:08:30,814 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 12:08:30,961 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 12:08:30,961 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:08:30,971 INFO ]: Computing forward predicates... [2018-06-25 12:08:32,010 WARN ]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-25 12:08:32,013 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:08:32,033 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:08:32,033 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-25 12:08:32,033 INFO ]: Interpolant automaton has 8 states [2018-06-25 12:08:32,033 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 12:08:32,034 INFO ]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-06-25 12:08:32,034 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-25 12:08:32,324 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:08:32,324 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 12:08:32,325 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 12:08:32,325 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-25 12:08:32,325 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:08:32,325 INFO ]: With dead ends: 11 [2018-06-25 12:08:32,325 INFO ]: Without dead ends: 11 [2018-06-25 12:08:32,325 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-06-25 12:08:32,326 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 12:08:32,327 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 12:08:32,327 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 12:08:32,327 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 12:08:32,327 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-25 12:08:32,327 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:08:32,327 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 12:08:32,327 INFO ]: Interpolant automaton has 8 states. [2018-06-25 12:08:32,327 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 12:08:32,328 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 12:08:32,328 INFO ]: Found error trace [2018-06-25 12:08:32,328 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:08:32,328 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:08:32,328 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-25 12:08:32,328 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:08:32,328 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:08:32,329 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:32,329 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:08:32,329 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:32,425 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:08:32,781 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:08:32,782 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:08:32,782 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 [2018-06-25 12:08:32,788 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 12:08:32,922 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 12:08:32,922 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:08:32,932 INFO ]: Computing forward predicates... [2018-06-25 12:08:34,002 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:08:34,024 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:08:34,024 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-25 12:08:34,024 INFO ]: Interpolant automaton has 10 states [2018-06-25 12:08:34,024 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-25 12:08:34,025 INFO ]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-25 12:08:34,025 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-25 12:08:34,185 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:08:34,186 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-25 12:08:34,186 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 12:08:34,186 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-25 12:08:34,186 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:08:34,186 INFO ]: With dead ends: 12 [2018-06-25 12:08:34,186 INFO ]: Without dead ends: 12 [2018-06-25 12:08:34,187 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-06-25 12:08:34,187 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 12:08:34,188 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-25 12:08:34,188 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-25 12:08:34,188 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-25 12:08:34,188 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-25 12:08:34,188 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:08:34,189 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-25 12:08:34,189 INFO ]: Interpolant automaton has 10 states. [2018-06-25 12:08:34,189 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-25 12:08:34,189 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 12:08:34,189 INFO ]: Found error trace [2018-06-25 12:08:34,189 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:08:34,189 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:08:34,189 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 4 times [2018-06-25 12:08:34,189 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:08:34,189 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:08:34,190 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:34,190 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:08:34,190 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:34,332 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:08:34,990 WARN ]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-25 12:08:35,141 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:08:35,141 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:08:35,141 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 [2018-06-25 12:08:35,147 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 12:08:35,282 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 12:08:35,282 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:08:35,293 INFO ]: Computing forward predicates... [2018-06-25 12:08:38,574 WARN ]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-25 12:08:38,588 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:08:38,623 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:08:38,624 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-06-25 12:08:38,624 INFO ]: Interpolant automaton has 12 states [2018-06-25 12:08:38,624 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-25 12:08:38,624 INFO ]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-25 12:08:38,624 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-06-25 12:08:39,132 WARN ]: Spent 433.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 7 [2018-06-25 12:08:39,394 WARN ]: Spent 153.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-06-25 12:08:39,729 WARN ]: Spent 193.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 22 [2018-06-25 12:08:39,775 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:08:39,775 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-25 12:08:39,775 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 12:08:39,775 INFO ]: Start accepts. Automaton has 12 states. Word has length 11 [2018-06-25 12:08:39,775 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:08:39,775 INFO ]: With dead ends: 13 [2018-06-25 12:08:39,775 INFO ]: Without dead ends: 13 [2018-06-25 12:08:39,776 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2018-06-25 12:08:39,776 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 12:08:39,777 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 12:08:39,777 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 12:08:39,777 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-25 12:08:39,777 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-25 12:08:39,778 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:08:39,778 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-25 12:08:39,778 INFO ]: Interpolant automaton has 12 states. [2018-06-25 12:08:39,778 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-25 12:08:39,778 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 12:08:39,778 INFO ]: Found error trace [2018-06-25 12:08:39,778 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:08:39,778 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:08:39,778 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 5 times [2018-06-25 12:08:39,778 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:08:39,778 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:08:39,779 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:39,779 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:08:39,779 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:39,914 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:08:40,245 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:08:40,245 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:08:40,245 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 12:08:40,252 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-25 12:08:40,432 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-25 12:08:40,432 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:08:40,446 INFO ]: Computing forward predicates... [2018-06-25 12:08:41,853 WARN ]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-25 12:08:47,226 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:08:47,248 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:08:47,248 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-25 12:08:47,248 INFO ]: Interpolant automaton has 14 states [2018-06-25 12:08:47,248 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-25 12:08:47,248 INFO ]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-06-25 12:08:47,249 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 14 states. [2018-06-25 12:08:47,462 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:08:47,462 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-25 12:08:47,466 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-25 12:08:47,466 INFO ]: Start accepts. Automaton has 14 states. Word has length 12 [2018-06-25 12:08:47,466 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:08:47,466 INFO ]: With dead ends: 16 [2018-06-25 12:08:47,466 INFO ]: Without dead ends: 16 [2018-06-25 12:08:47,467 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2018-06-25 12:08:47,467 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-25 12:08:47,468 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-25 12:08:47,468 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-25 12:08:47,471 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-25 12:08:47,471 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-06-25 12:08:47,471 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:08:47,471 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-25 12:08:47,471 INFO ]: Interpolant automaton has 14 states. [2018-06-25 12:08:47,471 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-25 12:08:47,471 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-25 12:08:47,471 INFO ]: Found error trace [2018-06-25 12:08:47,472 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:08:47,472 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:08:47,472 INFO ]: Analyzing trace with hash 1051911180, now seen corresponding path program 6 times [2018-06-25 12:08:47,472 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:08:47,472 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:08:47,472 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:47,472 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:08:47,472 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:08:47,876 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:08:48,565 WARN ]: Spent 149.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 13 [2018-06-25 12:08:48,878 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:08:48,878 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:08:48,878 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-25 12:08:48,893 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 12:08:49,147 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-06-25 12:08:49,147 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:08:49,162 INFO ]: Computing forward predicates... [2018-06-25 12:08:52,478 WARN ]: Spent 2.01 s on a formula simplification. DAG size of input: 261 DAG size of output: 113 Received shutdown request... [2018-06-25 12:09:32,747 INFO ]: Timeout while computing interpolants [2018-06-25 12:09:32,948 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 12:09:32,948 WARN ]: Verification canceled [2018-06-25 12:09:32,952 WARN ]: Timeout [2018-06-25 12:09:32,952 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 12:09:32 BoogieIcfgContainer [2018-06-25 12:09:32,952 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 12:09:32,953 INFO ]: Toolchain (without parser) took 65095.58 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 242.0 MB in the beginning and 891.9 MB in the end (delta: -649.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-25 12:09:32,956 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 303.6 MB. Free memory is still 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 12:09:32,956 INFO ]: ChcToBoogie took 61.89 ms. Allocated memory is still 303.6 MB. Free memory was 242.0 MB in the beginning and 239.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 12:09:32,956 INFO ]: Boogie Preprocessor took 65.58 ms. Allocated memory is still 303.6 MB. Free memory was 239.0 MB in the beginning and 237.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 12:09:32,957 INFO ]: RCFGBuilder took 425.83 ms. Allocated memory is still 303.6 MB. Free memory was 237.0 MB in the beginning and 209.4 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 3.6 GB. [2018-06-25 12:09:32,957 INFO ]: TraceAbstraction took 64531.20 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 209.4 MB in the beginning and 891.9 MB in the end (delta: -682.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-25 12:09:32,959 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 269.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 61.89 ms. Allocated memory is still 303.6 MB. Free memory was 242.0 MB in the beginning and 239.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 65.58 ms. Allocated memory is still 303.6 MB. Free memory was 239.0 MB in the beginning and 237.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 425.83 ms. Allocated memory is still 303.6 MB. Free memory was 237.0 MB in the beginning and 209.4 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 3.6 GB. * TraceAbstraction took 64531.20 ms. Allocated memory was 303.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 209.4 MB in the beginning and 891.9 MB in the end (delta: -682.4 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 16 with TraceHistMax 8, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 3456 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 64.4s OverallTime, 7 OverallIterations, 8 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 5 SDslu, 134 SDs, 0 SdLazy, 62 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=6, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 15.1s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 3838 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1925 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/70 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_clnt_1.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_12-09-32-973.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_clnt_1.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_12-09-32-973.csv Completed graceful shutdown