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/lustre/durationThm_1_e3_389_e6_167.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 07:28:31,222 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 07:28:31,226 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 07:28:31,240 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 07:28:31,241 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 07:28:31,242 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 07:28:31,243 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 07:28:31,244 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 07:28:31,246 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 07:28:31,247 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 07:28:31,249 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 07:28:31,249 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 07:28:31,250 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 07:28:31,251 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 07:28:31,251 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 07:28:31,255 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 07:28:31,257 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 07:28:31,259 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 07:28:31,272 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 07:28:31,273 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 07:28:31,274 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 07:28:31,276 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 07:28:31,276 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 07:28:31,276 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 07:28:31,277 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 07:28:31,278 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 07:28:31,279 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 07:28:31,284 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 07:28:31,285 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 07:28:31,285 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 07:28:31,286 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 07:28:31,286 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 07:28:31,286 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 07:28:31,287 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 07:28:31,288 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 07:28:31,290 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 07:28:31,308 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 07:28:31,309 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 07:28:31,309 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 07:28:31,309 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 07:28:31,311 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 07:28:31,311 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 07:28:31,311 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 07:28:31,311 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 07:28:31,312 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 07:28:31,312 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 07:28:31,312 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 07:28:31,312 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 07:28:31,312 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 07:28:31,312 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 07:28:31,313 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 07:28:31,313 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 07:28:31,313 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 07:28:31,315 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 07:28:31,315 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 07:28:31,348 INFO ]: Repository-Root is: /tmp [2018-06-22 07:28:31,366 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 07:28:31,369 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 07:28:31,371 INFO ]: Initializing SmtParser... [2018-06-22 07:28:31,371 INFO ]: SmtParser initialized [2018-06-22 07:28:31,371 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_1_e3_389_e6_167.smt2 [2018-06-22 07:28:31,373 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 07:28:31,444 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_1_e3_389_e6_167.smt2 unknown [2018-06-22 07:28:31,742 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_1_e3_389_e6_167.smt2 [2018-06-22 07:28:31,749 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 07:28:31,758 INFO ]: Walking toolchain with 4 elements. [2018-06-22 07:28:31,758 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 07:28:31,758 INFO ]: Initializing ChcToBoogie... [2018-06-22 07:28:31,758 INFO ]: ChcToBoogie initialized [2018-06-22 07:28:31,762 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:28:31" (1/1) ... [2018-06-22 07:28:31,820 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:28:31 Unit [2018-06-22 07:28:31,820 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 07:28:31,821 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 07:28:31,821 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 07:28:31,821 INFO ]: Boogie Preprocessor initialized [2018-06-22 07:28:31,841 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:28:31" (1/1) ... [2018-06-22 07:28:31,841 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:28:31" (1/1) ... [2018-06-22 07:28:31,849 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:28:31" (1/1) ... [2018-06-22 07:28:31,849 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:28:31" (1/1) ... [2018-06-22 07:28:31,854 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:28:31" (1/1) ... [2018-06-22 07:28:31,856 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:28:31" (1/1) ... [2018-06-22 07:28:31,867 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:28:31" (1/1) ... [2018-06-22 07:28:31,869 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 07:28:31,869 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 07:28:31,869 INFO ]: Initializing RCFGBuilder... [2018-06-22 07:28:31,869 INFO ]: RCFGBuilder initialized [2018-06-22 07:28:31,870 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:28:31" (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 07:28:31,889 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 07:28:31,889 INFO ]: Found specification of procedure gotoProc [2018-06-22 07:28:31,889 INFO ]: Found implementation of procedure gotoProc [2018-06-22 07:28:31,889 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 07:28:31,889 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 07:28:31,889 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 07:28:32,189 INFO ]: Using library mode [2018-06-22 07:28:32,189 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:28:32 BoogieIcfgContainer [2018-06-22 07:28:32,190 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 07:28:32,191 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 07:28:32,191 INFO ]: Initializing TraceAbstraction... [2018-06-22 07:28:32,194 INFO ]: TraceAbstraction initialized [2018-06-22 07:28:32,194 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:28:31" (1/3) ... [2018-06-22 07:28:32,195 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c9c31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:28:32, skipping insertion in model container [2018-06-22 07:28:32,195 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:28:31" (2/3) ... [2018-06-22 07:28:32,195 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c9c31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:28:32, skipping insertion in model container [2018-06-22 07:28:32,195 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:28:32" (3/3) ... [2018-06-22 07:28:32,197 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 07:28:32,205 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 07:28:32,213 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 07:28:32,267 INFO ]: Using default assertion order modulation [2018-06-22 07:28:32,268 INFO ]: Interprodecural is true [2018-06-22 07:28:32,268 INFO ]: Hoare is false [2018-06-22 07:28:32,268 INFO ]: Compute interpolants for FPandBP [2018-06-22 07:28:32,268 INFO ]: Backedges is TWOTRACK [2018-06-22 07:28:32,268 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 07:28:32,268 INFO ]: Difference is false [2018-06-22 07:28:32,268 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 07:28:32,268 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 07:28:32,289 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 07:28:32,304 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 07:28:32,304 INFO ]: Found error trace [2018-06-22 07:28:32,305 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:28:32,305 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:28:32,312 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 07:28:32,314 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:28:32,314 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:28:32,360 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:28:32,360 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 07:28:32,360 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:28:32,428 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:28:32,513 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:28:32,516 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 07:28:32,516 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 07:28:32,518 INFO ]: Interpolant automaton has 3 states [2018-06-22 07:28:32,528 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 07:28:32,529 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 07:28:32,530 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 07:28:32,598 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 07:28:32,598 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 07:28:32,601 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 07:28:32,602 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 07:28:32,602 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 07:28:32,612 INFO ]: With dead ends: 9 [2018-06-22 07:28:32,615 INFO ]: Without dead ends: 9 [2018-06-22 07:28:32,617 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 07:28:32,635 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 07:28:32,651 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 07:28:32,653 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 07:28:32,653 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 07:28:32,654 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 07:28:32,654 INFO ]: Finished accepts. word is rejected. [2018-06-22 07:28:32,654 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 07:28:32,654 INFO ]: Interpolant automaton has 3 states. [2018-06-22 07:28:32,654 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 07:28:32,655 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 07:28:32,655 INFO ]: Found error trace [2018-06-22 07:28:32,655 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:28:32,655 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:28:32,655 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 07:28:32,655 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:28:32,655 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:28:32,656 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:28:32,656 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 07:28:32,656 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:28:32,735 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:28:32,970 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:28:32,971 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 07:28:32,971 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 07:28:32,979 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 07:28:33,066 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:28:33,073 INFO ]: Computing forward predicates... [2018-06-22 07:28:33,141 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:28:33,521 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:28:33,542 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 07:28:33,542 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 07:28:33,542 INFO ]: Interpolant automaton has 5 states [2018-06-22 07:28:33,543 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 07:28:33,543 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 07:28:33,543 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 07:28:33,789 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 07:28:33,790 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 07:28:33,790 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 07:28:33,790 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 07:28:33,790 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 07:28:33,790 INFO ]: With dead ends: 10 [2018-06-22 07:28:33,790 INFO ]: Without dead ends: 10 [2018-06-22 07:28:33,791 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 07:28:33,791 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 07:28:33,792 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 07:28:33,792 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 07:28:33,792 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 07:28:33,793 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 07:28:33,793 INFO ]: Finished accepts. word is rejected. [2018-06-22 07:28:33,793 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 07:28:33,793 INFO ]: Interpolant automaton has 5 states. [2018-06-22 07:28:33,793 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 07:28:33,793 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 07:28:33,793 INFO ]: Found error trace [2018-06-22 07:28:33,793 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:28:33,793 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:28:33,793 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 07:28:33,793 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:28:33,793 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:28:33,794 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:28:33,794 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 07:28:33,794 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:28:33,862 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:28:34,542 WARN ]: Spent 485.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2018-06-22 07:28:34,772 WARN ]: Spent 138.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2018-06-22 07:28:34,774 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:28:34,774 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 07:28:34,774 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 07:28:34,780 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 07:28:34,875 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 07:28:34,875 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:28:34,880 INFO ]: Computing forward predicates... [2018-06-22 07:28:35,875 WARN ]: Spent 308.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 20 [2018-06-22 07:28:36,218 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:28:36,251 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 07:28:36,251 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-06-22 07:28:36,252 INFO ]: Interpolant automaton has 7 states [2018-06-22 07:28:36,252 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 07:28:36,252 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-22 07:28:36,252 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2018-06-22 07:28:36,769 WARN ]: Spent 491.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2018-06-22 07:28:36,910 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 07:28:36,910 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 07:28:36,911 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 07:28:36,911 INFO ]: Start accepts. Automaton has 7 states. Word has length 9 [2018-06-22 07:28:36,911 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 07:28:36,911 INFO ]: With dead ends: 11 [2018-06-22 07:28:36,911 INFO ]: Without dead ends: 11 [2018-06-22 07:28:36,912 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-06-22 07:28:36,912 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 07:28:36,913 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 07:28:36,913 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 07:28:36,914 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 07:28:36,914 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 07:28:36,914 INFO ]: Finished accepts. word is rejected. [2018-06-22 07:28:36,914 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 07:28:36,914 INFO ]: Interpolant automaton has 7 states. [2018-06-22 07:28:36,914 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 07:28:36,914 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 07:28:36,914 INFO ]: Found error trace [2018-06-22 07:28:36,914 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:28:36,914 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:28:36,914 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-22 07:28:36,914 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:28:36,915 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:28:36,915 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:28:36,915 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 07:28:36,915 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:28:36,971 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:28:37,294 WARN ]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2018-06-22 07:28:37,559 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 22 [2018-06-22 07:28:37,561 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:28:37,561 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 07:28:37,561 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) [2018-06-22 07:28:37,575 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 07:28:37,638 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 07:28:37,638 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:28:37,643 INFO ]: Computing forward predicates... [2018-06-22 07:28:37,672 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 07:28:38,581 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 07:28:39,222 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 07:28:39,474 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 07:28:40,454 WARN ]: Spent 102.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-06-22 07:28:40,586 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:28:40,588 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:28:41,687 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:28:41,708 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 07:28:41,708 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 07:28:41,708 INFO ]: Interpolant automaton has 9 states [2018-06-22 07:28:41,708 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 07:28:41,709 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-22 07:28:41,709 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-22 07:28:42,098 WARN ]: Spent 357.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 76 [2018-06-22 07:28:42,371 WARN ]: Spent 255.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2018-06-22 07:28:42,441 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 07:28:42,441 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 07:28:42,441 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 07:28:42,441 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-22 07:28:42,442 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 07:28:42,442 INFO ]: With dead ends: 12 [2018-06-22 07:28:42,442 INFO ]: Without dead ends: 12 [2018-06-22 07:28:42,442 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-06-22 07:28:42,442 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 07:28:42,444 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 07:28:42,444 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 07:28:42,444 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 07:28:42,444 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 07:28:42,445 INFO ]: Finished accepts. word is rejected. [2018-06-22 07:28:42,445 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 07:28:42,445 INFO ]: Interpolant automaton has 9 states. [2018-06-22 07:28:42,445 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 07:28:42,445 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 07:28:42,445 INFO ]: Found error trace [2018-06-22 07:28:42,445 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:28:42,445 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:28:42,445 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 4 times [2018-06-22 07:28:42,445 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:28:42,445 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:28:42,446 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:28:42,446 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 07:28:42,446 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:28:42,503 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:28:42,778 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 2 [2018-06-22 07:28:43,278 WARN ]: Spent 447.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2018-06-22 07:28:43,420 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2018-06-22 07:28:43,541 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-06-22 07:28:43,648 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:28:43,648 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 07:28:43,648 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) [2018-06-22 07:28:43,664 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 07:28:43,740 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 07:28:43,741 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:28:43,747 INFO ]: Computing forward predicates... [2018-06-22 07:28:43,858 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:28:48,770 WARN ]: Spent 681.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 18 [2018-06-22 07:28:48,773 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:28:48,795 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 07:28:48,795 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-06-22 07:28:48,795 INFO ]: Interpolant automaton has 11 states [2018-06-22 07:28:48,795 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 07:28:48,796 INFO ]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-06-22 07:28:48,796 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-06-22 07:28:49,132 WARN ]: Spent 309.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 64 [2018-06-22 07:28:49,403 WARN ]: Spent 239.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 78 [2018-06-22 07:28:49,739 WARN ]: Spent 316.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2018-06-22 07:28:49,997 WARN ]: Spent 223.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2018-06-22 07:28:50,013 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 07:28:50,013 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 07:28:50,013 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 07:28:50,013 INFO ]: Start accepts. Automaton has 11 states. Word has length 11 [2018-06-22 07:28:50,013 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 07:28:50,013 INFO ]: With dead ends: 14 [2018-06-22 07:28:50,014 INFO ]: Without dead ends: 14 [2018-06-22 07:28:50,014 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-06-22 07:28:50,014 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 07:28:50,015 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 07:28:50,015 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 07:28:50,016 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 07:28:50,016 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-06-22 07:28:50,016 INFO ]: Finished accepts. word is rejected. [2018-06-22 07:28:50,016 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 07:28:50,016 INFO ]: Interpolant automaton has 11 states. [2018-06-22 07:28:50,016 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 07:28:50,016 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 07:28:50,016 INFO ]: Found error trace [2018-06-22 07:28:50,016 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:28:50,016 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:28:50,016 INFO ]: Analyzing trace with hash 23503628, now seen corresponding path program 5 times [2018-06-22 07:28:50,016 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:28:50,016 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:28:50,018 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:28:50,018 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 07:28:50,018 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:28:50,244 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:28:50,649 WARN ]: Spent 116.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 2 [2018-06-22 07:28:51,084 WARN ]: Spent 386.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2018-06-22 07:28:51,824 WARN ]: Spent 651.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2018-06-22 07:28:52,020 WARN ]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2018-06-22 07:28:52,303 WARN ]: Spent 255.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2018-06-22 07:28:52,472 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:28:52,472 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 07:28:52,472 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 [2018-06-22 07:28:52,491 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 07:28:52,588 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 07:28:52,588 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:28:52,595 INFO ]: Computing forward predicates... [2018-06-22 07:28:52,605 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 07:28:52,719 WARN ]: Simplifying disjunction of 7776 conjuctions. This might take some time... [2018-06-22 07:29:01,270 INFO ]: Simplified to disjunction of 7776 conjuctions. [2018-06-22 07:29:01,438 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:01,444 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:01,828 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:01,861 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:02,646 WARN ]: Spent 296.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 39 [2018-06-22 07:29:02,725 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:02,731 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:03,511 WARN ]: Spent 344.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 43 [2018-06-22 07:29:05,388 WARN ]: Spent 228.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 44 [2018-06-22 07:29:05,728 WARN ]: Spent 119.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 33 [2018-06-22 07:29:05,737 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:29:05,757 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 07:29:05,758 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-06-22 07:29:05,758 INFO ]: Interpolant automaton has 15 states [2018-06-22 07:29:05,758 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 07:29:05,758 INFO ]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2018-06-22 07:29:05,758 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 15 states. [2018-06-22 07:29:06,148 WARN ]: Spent 351.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 124 [2018-06-22 07:29:06,580 WARN ]: Spent 402.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 137 [2018-06-22 07:29:06,833 WARN ]: Spent 218.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 94 [2018-06-22 07:29:07,203 WARN ]: Spent 335.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 136 [2018-06-22 07:29:07,475 WARN ]: Spent 227.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2018-06-22 07:29:07,675 WARN ]: Spent 166.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2018-06-22 07:29:07,693 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 07:29:07,694 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-22 07:29:07,694 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 07:29:07,694 INFO ]: Start accepts. Automaton has 15 states. Word has length 13 [2018-06-22 07:29:07,694 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 07:29:07,695 INFO ]: With dead ends: 16 [2018-06-22 07:29:07,695 INFO ]: Without dead ends: 16 [2018-06-22 07:29:07,695 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-06-22 07:29:07,695 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 07:29:07,697 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-22 07:29:07,697 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-22 07:29:07,697 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-22 07:29:07,698 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-06-22 07:29:07,698 INFO ]: Finished accepts. word is rejected. [2018-06-22 07:29:07,698 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-22 07:29:07,698 INFO ]: Interpolant automaton has 15 states. [2018-06-22 07:29:07,698 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-22 07:29:07,698 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-22 07:29:07,698 INFO ]: Found error trace [2018-06-22 07:29:07,698 INFO ]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:29:07,698 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:29:07,698 INFO ]: Analyzing trace with hash 1051911180, now seen corresponding path program 6 times [2018-06-22 07:29:07,698 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:29:07,698 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:29:07,699 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:29:07,699 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 07:29:07,699 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:29:07,942 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:29:08,565 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 2 [2018-06-22 07:29:08,899 WARN ]: Spent 277.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2018-06-22 07:29:09,148 WARN ]: Spent 235.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 64 [2018-06-22 07:29:09,836 WARN ]: Spent 628.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 118 [2018-06-22 07:29:10,397 WARN ]: Spent 501.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 107 [2018-06-22 07:29:11,082 WARN ]: Spent 625.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 108 [2018-06-22 07:29:11,690 WARN ]: Spent 410.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 86 [2018-06-22 07:29:11,989 WARN ]: Spent 243.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 52 [2018-06-22 07:29:12,069 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:29:12,069 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 07:29:12,069 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) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 07:29:12,074 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-22 07:29:12,238 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-06-22 07:29:12,238 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:29:12,247 INFO ]: Computing forward predicates... [2018-06-22 07:29:12,302 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 07:29:12,599 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 07:29:13,004 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:13,011 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:13,326 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 07:29:13,930 WARN ]: Spent 207.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 43 [2018-06-22 07:29:14,020 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 07:29:14,661 WARN ]: Spent 264.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 43 [2018-06-22 07:29:14,729 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 07:29:14,744 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 07:29:14,746 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:14,748 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 07:29:14,749 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:14,750 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:14,752 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 07:29:14,754 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 07:29:14,769 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:14,772 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:14,773 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:14,775 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 07:29:15,370 WARN ]: Spent 211.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 44 [2018-06-22 07:29:15,868 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 45 [2018-06-22 07:29:16,623 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:16,623 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:16,624 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:16,624 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:17,171 WARN ]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 19 [2018-06-22 07:29:17,175 INFO ]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:29:17,197 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 07:29:17,197 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-06-22 07:29:17,197 INFO ]: Interpolant automaton has 19 states [2018-06-22 07:29:17,197 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 07:29:17,198 INFO ]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2018-06-22 07:29:17,198 INFO ]: Start difference. First operand 16 states and 16 transitions. Second operand 19 states. [2018-06-22 07:29:17,583 WARN ]: Spent 321.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 104 [2018-06-22 07:29:18,015 WARN ]: Spent 390.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 127 [2018-06-22 07:29:18,650 WARN ]: Spent 589.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 178 [2018-06-22 07:29:19,177 WARN ]: Spent 481.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 153 [2018-06-22 07:29:19,675 WARN ]: Spent 450.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 149 [2018-06-22 07:29:20,039 WARN ]: Spent 315.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 122 [2018-06-22 07:29:20,267 WARN ]: Spent 168.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2018-06-22 07:29:20,406 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 07:29:20,406 INFO ]: Finished difference Result 18 states and 18 transitions. [2018-06-22 07:29:20,406 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 07:29:20,407 INFO ]: Start accepts. Automaton has 19 states. Word has length 15 [2018-06-22 07:29:20,407 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 07:29:20,407 INFO ]: With dead ends: 18 [2018-06-22 07:29:20,407 INFO ]: Without dead ends: 18 [2018-06-22 07:29:20,407 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2018-06-22 07:29:20,407 INFO ]: Start minimizeSevpa. Operand 18 states. [2018-06-22 07:29:20,408 INFO ]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-06-22 07:29:20,408 INFO ]: Start removeUnreachable. Operand 18 states. [2018-06-22 07:29:20,409 INFO ]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-06-22 07:29:20,409 INFO ]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-06-22 07:29:20,409 INFO ]: Finished accepts. word is rejected. [2018-06-22 07:29:20,409 INFO ]: Abstraction has 18 states and 18 transitions. [2018-06-22 07:29:20,409 INFO ]: Interpolant automaton has 19 states. [2018-06-22 07:29:20,409 INFO ]: Start isEmpty. Operand 18 states and 18 transitions. [2018-06-22 07:29:20,409 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 07:29:20,409 INFO ]: Found error trace [2018-06-22 07:29:20,409 INFO ]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:29:20,409 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:29:20,409 INFO ]: Analyzing trace with hash 1509090572, now seen corresponding path program 7 times [2018-06-22 07:29:20,409 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:29:20,409 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:29:20,410 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:29:20,410 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 07:29:20,410 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:29:20,616 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:29:21,207 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 2 [2018-06-22 07:29:22,382 WARN ]: Spent 1.11 s on a formula simplification. DAG size of input: 132 DAG size of output: 68 [2018-06-22 07:29:22,929 WARN ]: Spent 530.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 87 [2018-06-22 07:29:23,374 WARN ]: Spent 420.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 71 [2018-06-22 07:29:23,854 WARN ]: Spent 451.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 78 [2018-06-22 07:29:24,327 WARN ]: Spent 435.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 71 [2018-06-22 07:29:24,701 WARN ]: Spent 339.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 58 [2018-06-22 07:29:24,991 WARN ]: Spent 253.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 59 [2018-06-22 07:29:25,388 WARN ]: Spent 357.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 50 [2018-06-22 07:29:25,591 WARN ]: Spent 172.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 46 [2018-06-22 07:29:25,668 INFO ]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:29:25,669 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 07:29:25,669 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 07:29:25,675 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 07:29:25,827 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:29:25,839 INFO ]: Computing forward predicates... [2018-06-22 07:29:25,857 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 07:29:26,092 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 07:29:26,261 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 07:29:26,438 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:26,441 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:26,446 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:26,447 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:26,702 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 07:29:27,172 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 39 [2018-06-22 07:29:27,222 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:27,223 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:27,224 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:27,225 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:27,226 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:27,226 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:27,229 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:27,229 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:27,231 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:27,231 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:27,605 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2018-06-22 07:29:27,705 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 07:29:28,402 WARN ]: Spent 174.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 44 [2018-06-22 07:29:28,441 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:28,449 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:29,133 WARN ]: Spent 212.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 45 [2018-06-22 07:29:29,239 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:29,250 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:29,717 WARN ]: Spent 190.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 45 [2018-06-22 07:29:29,771 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 07:29:29,772 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 07:29:30,098 WARN ]: Spent 181.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 45 [2018-06-22 07:29:30,900 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 37 [2018-06-22 07:29:30,921 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:30,922 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 07:29:31,063 INFO ]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:29:31,084 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 07:29:31,084 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2018-06-22 07:29:31,084 INFO ]: Interpolant automaton has 23 states [2018-06-22 07:29:31,084 INFO ]: Constructing interpolant automaton starting with 23 interpolants. [2018-06-22 07:29:31,084 INFO ]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2018-06-22 07:29:31,084 INFO ]: Start difference. First operand 18 states and 18 transitions. Second operand 23 states. [2018-06-22 07:29:31,312 WARN ]: Spent 186.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 82 [2018-06-22 07:29:31,874 WARN ]: Spent 524.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 120 [2018-06-22 07:29:32,326 WARN ]: Spent 411.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 123 Received shutdown request... [2018-06-22 07:29:32,426 WARN ]: Removed 3 from assertion stack [2018-06-22 07:29:32,426 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 07:29:32,427 WARN ]: Verification canceled [2018-06-22 07:29:32,430 WARN ]: Timeout [2018-06-22 07:29:32,430 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:29:32 BoogieIcfgContainer [2018-06-22 07:29:32,430 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 07:29:32,431 INFO ]: Toolchain (without parser) took 60681.23 ms. Allocated memory was 305.1 MB in the beginning and 1.2 GB in the end (delta: 850.9 MB). Free memory was 257.7 MB in the beginning and 1.1 GB in the end (delta: -797.2 MB). Peak memory consumption was 53.7 MB. Max. memory is 3.6 GB. [2018-06-22 07:29:32,431 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 305.1 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 07:29:32,431 INFO ]: ChcToBoogie took 62.43 ms. Allocated memory is still 305.1 MB. Free memory was 257.7 MB in the beginning and 255.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 07:29:32,432 INFO ]: Boogie Preprocessor took 48.08 ms. Allocated memory is still 305.1 MB. Free memory was 255.7 MB in the beginning and 253.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 07:29:32,432 INFO ]: RCFGBuilder took 320.27 ms. Allocated memory is still 305.1 MB. Free memory was 253.7 MB in the beginning and 240.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-22 07:29:32,432 INFO ]: TraceAbstraction took 60239.08 ms. Allocated memory was 305.1 MB in the beginning and 1.2 GB in the end (delta: 850.9 MB). Free memory was 240.7 MB in the beginning and 1.1 GB in the end (delta: -814.2 MB). Peak memory consumption was 36.7 MB. Max. memory is 3.6 GB. [2018-06-22 07:29:32,439 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 305.1 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 62.43 ms. Allocated memory is still 305.1 MB. Free memory was 257.7 MB in the beginning and 255.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 48.08 ms. Allocated memory is still 305.1 MB. Free memory was 255.7 MB in the beginning and 253.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 320.27 ms. Allocated memory is still 305.1 MB. Free memory was 253.7 MB in the beginning and 240.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 60239.08 ms. Allocated memory was 305.1 MB in the beginning and 1.2 GB in the end (delta: 850.9 MB). Free memory was 240.7 MB in the beginning and 1.1 GB in the end (delta: -814.2 MB). Peak memory consumption was 36.7 MB. 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 constructing difference of abstraction (18states) and interpolant automaton (currently 6 states, 23 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 146. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 60.1s OverallTime, 8 OverallIterations, 10 TraceHistogramMax, 9.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 0 SDslu, 268 SDs, 0 SdLazy, 289 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 28.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=7, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 48.5s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 86052 SizeOfPredicates, 32 NumberOfNonLiveVariables, 3579 ConjunctsInSsa, 884 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 0/264 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/durationThm_1_e3_389_e6_167.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_07-29-32-448.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/durationThm_1_e3_389_e6_167.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_07-29-32-448.csv Completed graceful shutdown