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/eldarica-misc/LIA/Consistency/slow-hull.56.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 00:53:58,305 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 00:53:58,308 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 00:53:58,319 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 00:53:58,319 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 00:53:58,320 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 00:53:58,321 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 00:53:58,323 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 00:53:58,325 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 00:53:58,325 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 00:53:58,326 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 00:53:58,326 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 00:53:58,327 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 00:53:58,328 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 00:53:58,329 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 00:53:58,330 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 00:53:58,332 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 00:53:58,334 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 00:53:58,336 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 00:53:58,337 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 00:53:58,338 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 00:53:58,340 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 00:53:58,341 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 00:53:58,341 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 00:53:58,342 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 00:53:58,343 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 00:53:58,343 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 00:53:58,344 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 00:53:58,345 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 00:53:58,346 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 00:53:58,346 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 00:53:58,347 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 00:53:58,347 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 00:53:58,348 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 00:53:58,349 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 00:53:58,349 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 00:53:58,363 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 00:53:58,363 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 00:53:58,364 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 00:53:58,364 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 00:53:58,365 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 00:53:58,366 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 00:53:58,366 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 00:53:58,366 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 00:53:58,366 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 00:53:58,367 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 00:53:58,372 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 00:53:58,372 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 00:53:58,372 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 00:53:58,372 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 00:53:58,373 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 00:53:58,373 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 00:53:58,373 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 00:53:58,374 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 00:53:58,374 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 00:53:58,420 INFO ]: Repository-Root is: /tmp [2018-06-22 00:53:58,439 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 00:53:58,444 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 00:53:58,445 INFO ]: Initializing SmtParser... [2018-06-22 00:53:58,446 INFO ]: SmtParser initialized [2018-06-22 00:53:58,446 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/Consistency/slow-hull.56.smt2 [2018-06-22 00:53:58,447 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 00:53:58,525 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/slow-hull.56.smt2 unknown [2018-06-22 00:53:58,978 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/Consistency/slow-hull.56.smt2 [2018-06-22 00:53:58,992 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 00:53:58,998 INFO ]: Walking toolchain with 4 elements. [2018-06-22 00:53:58,999 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 00:53:58,999 INFO ]: Initializing ChcToBoogie... [2018-06-22 00:53:58,999 INFO ]: ChcToBoogie initialized [2018-06-22 00:53:59,006 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:53:58" (1/1) ... [2018-06-22 00:53:59,095 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:53:59 Unit [2018-06-22 00:53:59,095 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 00:53:59,096 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 00:53:59,096 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 00:53:59,096 INFO ]: Boogie Preprocessor initialized [2018-06-22 00:53:59,110 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:53:59" (1/1) ... [2018-06-22 00:53:59,110 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:53:59" (1/1) ... [2018-06-22 00:53:59,119 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:53:59" (1/1) ... [2018-06-22 00:53:59,120 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:53:59" (1/1) ... [2018-06-22 00:53:59,133 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:53:59" (1/1) ... [2018-06-22 00:53:59,137 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:53:59" (1/1) ... [2018-06-22 00:53:59,140 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:53:59" (1/1) ... [2018-06-22 00:53:59,144 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 00:53:59,144 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 00:53:59,145 INFO ]: Initializing RCFGBuilder... [2018-06-22 00:53:59,145 INFO ]: RCFGBuilder initialized [2018-06-22 00:53:59,145 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:53:59" (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 00:53:59,160 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 00:53:59,160 INFO ]: Found specification of procedure gotoProc [2018-06-22 00:53:59,160 INFO ]: Found implementation of procedure gotoProc [2018-06-22 00:53:59,160 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 00:53:59,160 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 00:53:59,160 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 00:54:00,423 INFO ]: Using library mode [2018-06-22 00:54:00,423 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:54:00 BoogieIcfgContainer [2018-06-22 00:54:00,423 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 00:54:00,425 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 00:54:00,425 INFO ]: Initializing TraceAbstraction... [2018-06-22 00:54:00,435 INFO ]: TraceAbstraction initialized [2018-06-22 00:54:00,436 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:53:58" (1/3) ... [2018-06-22 00:54:00,437 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee05658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:54:00, skipping insertion in model container [2018-06-22 00:54:00,437 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:53:59" (2/3) ... [2018-06-22 00:54:00,437 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee05658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:54:00, skipping insertion in model container [2018-06-22 00:54:00,437 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:54:00" (3/3) ... [2018-06-22 00:54:00,440 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 00:54:00,450 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 00:54:00,463 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 00:54:00,519 INFO ]: Using default assertion order modulation [2018-06-22 00:54:00,520 INFO ]: Interprodecural is true [2018-06-22 00:54:00,520 INFO ]: Hoare is false [2018-06-22 00:54:00,520 INFO ]: Compute interpolants for FPandBP [2018-06-22 00:54:00,520 INFO ]: Backedges is TWOTRACK [2018-06-22 00:54:00,520 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 00:54:00,520 INFO ]: Difference is false [2018-06-22 00:54:00,520 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 00:54:00,520 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 00:54:00,549 INFO ]: Start isEmpty. Operand 146 states. [2018-06-22 00:54:00,570 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 00:54:00,571 INFO ]: Found error trace [2018-06-22 00:54:00,572 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:54:00,572 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:54:00,576 INFO ]: Analyzing trace with hash -1303289652, now seen corresponding path program 1 times [2018-06-22 00:54:00,577 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:54:00,578 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:54:00,612 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:00,612 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:54:00,612 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:00,644 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:54:00,817 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:54:00,820 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:54:00,820 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:54:00,822 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:54:00,839 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:54:00,839 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:54:00,843 INFO ]: Start difference. First operand 146 states. Second operand 4 states. [2018-06-22 00:54:03,746 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:54:03,746 INFO ]: Finished difference Result 285 states and 551 transitions. [2018-06-22 00:54:03,747 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:54:03,748 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 00:54:03,748 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:54:03,793 INFO ]: With dead ends: 285 [2018-06-22 00:54:03,793 INFO ]: Without dead ends: 283 [2018-06-22 00:54:03,795 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:54:03,818 INFO ]: Start minimizeSevpa. Operand 283 states. [2018-06-22 00:54:03,966 INFO ]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-06-22 00:54:03,967 INFO ]: Start removeUnreachable. Operand 283 states. [2018-06-22 00:54:04,000 INFO ]: Finished removeUnreachable. Reduced from 283 states to 283 states and 549 transitions. [2018-06-22 00:54:04,002 INFO ]: Start accepts. Automaton has 283 states and 549 transitions. Word has length 8 [2018-06-22 00:54:04,004 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:54:04,004 INFO ]: Abstraction has 283 states and 549 transitions. [2018-06-22 00:54:04,004 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:54:04,004 INFO ]: Start isEmpty. Operand 283 states and 549 transitions. [2018-06-22 00:54:04,011 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 00:54:04,011 INFO ]: Found error trace [2018-06-22 00:54:04,011 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:54:04,011 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:54:04,011 INFO ]: Analyzing trace with hash -1700869226, now seen corresponding path program 1 times [2018-06-22 00:54:04,011 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:54:04,011 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:54:04,012 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:04,012 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:54:04,012 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:04,018 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:54:04,184 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:54:04,184 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:54:04,184 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:54:04,186 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:54:04,186 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:54:04,186 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:54:04,186 INFO ]: Start difference. First operand 283 states and 549 transitions. Second operand 4 states. [2018-06-22 00:54:06,023 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:54:06,023 INFO ]: Finished difference Result 423 states and 822 transitions. [2018-06-22 00:54:06,023 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:54:06,023 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 00:54:06,023 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:54:06,046 INFO ]: With dead ends: 423 [2018-06-22 00:54:06,046 INFO ]: Without dead ends: 423 [2018-06-22 00:54:06,047 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:54:06,048 INFO ]: Start minimizeSevpa. Operand 423 states. [2018-06-22 00:54:06,117 INFO ]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-06-22 00:54:06,117 INFO ]: Start removeUnreachable. Operand 423 states. [2018-06-22 00:54:06,137 INFO ]: Finished removeUnreachable. Reduced from 423 states to 423 states and 822 transitions. [2018-06-22 00:54:06,137 INFO ]: Start accepts. Automaton has 423 states and 822 transitions. Word has length 9 [2018-06-22 00:54:06,137 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:54:06,137 INFO ]: Abstraction has 423 states and 822 transitions. [2018-06-22 00:54:06,137 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:54:06,137 INFO ]: Start isEmpty. Operand 423 states and 822 transitions. [2018-06-22 00:54:06,141 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 00:54:06,141 INFO ]: Found error trace [2018-06-22 00:54:06,141 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:54:06,141 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:54:06,141 INFO ]: Analyzing trace with hash -1768286259, now seen corresponding path program 1 times [2018-06-22 00:54:06,141 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:54:06,141 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:54:06,142 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:06,142 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:54:06,142 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:06,156 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:54:06,265 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 00:54:06,265 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:54:06,265 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:54:06,266 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:54:06,266 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:54:06,266 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:54:06,266 INFO ]: Start difference. First operand 423 states and 822 transitions. Second operand 4 states. [2018-06-22 00:54:07,413 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:54:07,414 INFO ]: Finished difference Result 563 states and 1095 transitions. [2018-06-22 00:54:07,414 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:54:07,414 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 00:54:07,414 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:54:07,447 INFO ]: With dead ends: 563 [2018-06-22 00:54:07,447 INFO ]: Without dead ends: 563 [2018-06-22 00:54:07,447 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:54:07,450 INFO ]: Start minimizeSevpa. Operand 563 states. [2018-06-22 00:54:07,561 INFO ]: Finished minimizeSevpa. Reduced states from 563 to 563. [2018-06-22 00:54:07,561 INFO ]: Start removeUnreachable. Operand 563 states. [2018-06-22 00:54:07,577 INFO ]: Finished removeUnreachable. Reduced from 563 states to 563 states and 1095 transitions. [2018-06-22 00:54:07,578 INFO ]: Start accepts. Automaton has 563 states and 1095 transitions. Word has length 9 [2018-06-22 00:54:07,578 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:54:07,578 INFO ]: Abstraction has 563 states and 1095 transitions. [2018-06-22 00:54:07,578 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:54:07,578 INFO ]: Start isEmpty. Operand 563 states and 1095 transitions. [2018-06-22 00:54:07,613 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-22 00:54:07,613 INFO ]: Found error trace [2018-06-22 00:54:07,614 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:54:07,614 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:54:07,614 INFO ]: Analyzing trace with hash -1945999720, now seen corresponding path program 1 times [2018-06-22 00:54:07,614 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:54:07,614 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:54:07,615 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:07,615 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:54:07,615 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:07,661 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:54:07,819 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 00:54:07,819 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 00:54:07,819 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 00:54:07,827 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:54:07,893 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:54:07,902 INFO ]: Computing forward predicates... [2018-06-22 00:54:08,613 INFO ]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 00:54:08,633 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 00:54:08,633 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 00:54:08,633 INFO ]: Interpolant automaton has 14 states [2018-06-22 00:54:08,633 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 00:54:08,633 INFO ]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-06-22 00:54:08,634 INFO ]: Start difference. First operand 563 states and 1095 transitions. Second operand 14 states. [2018-06-22 00:54:30,795 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:54:30,796 INFO ]: Finished difference Result 3382 states and 31232 transitions. [2018-06-22 00:54:30,797 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-06-22 00:54:30,797 INFO ]: Start accepts. Automaton has 14 states. Word has length 20 [2018-06-22 00:54:30,798 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:54:32,466 INFO ]: With dead ends: 3382 [2018-06-22 00:54:32,466 INFO ]: Without dead ends: 3323 [2018-06-22 00:54:32,467 INFO ]: 0 DeclaredPredicates, 69 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=369, Invalid=2601, Unknown=0, NotChecked=0, Total=2970 [2018-06-22 00:54:32,469 INFO ]: Start minimizeSevpa. Operand 3323 states. [2018-06-22 00:54:35,238 INFO ]: Finished minimizeSevpa. Reduced states from 3323 to 1751. [2018-06-22 00:54:35,238 INFO ]: Start removeUnreachable. Operand 1751 states. [2018-06-22 00:54:35,513 INFO ]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 6017 transitions. [2018-06-22 00:54:35,513 INFO ]: Start accepts. Automaton has 1751 states and 6017 transitions. Word has length 20 [2018-06-22 00:54:35,514 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:54:35,514 INFO ]: Abstraction has 1751 states and 6017 transitions. [2018-06-22 00:54:35,514 INFO ]: Interpolant automaton has 14 states. [2018-06-22 00:54:35,515 INFO ]: Start isEmpty. Operand 1751 states and 6017 transitions. [2018-06-22 00:54:35,566 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-22 00:54:35,566 INFO ]: Found error trace [2018-06-22 00:54:35,566 INFO ]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:54:35,566 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:54:35,568 INFO ]: Analyzing trace with hash -485415743, now seen corresponding path program 1 times [2018-06-22 00:54:35,568 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:54:35,568 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:54:35,568 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:35,568 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:54:35,568 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:35,604 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:54:35,761 INFO ]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 00:54:35,761 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:54:35,761 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 00:54:35,761 INFO ]: Interpolant automaton has 4 states [2018-06-22 00:54:35,761 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 00:54:35,761 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 00:54:35,761 INFO ]: Start difference. First operand 1751 states and 6017 transitions. Second operand 4 states. [2018-06-22 00:54:37,078 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:54:37,078 INFO ]: Finished difference Result 2095 states and 7212 transitions. [2018-06-22 00:54:37,079 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 00:54:37,079 INFO ]: Start accepts. Automaton has 4 states. Word has length 20 [2018-06-22 00:54:37,080 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:54:37,272 INFO ]: With dead ends: 2095 [2018-06-22 00:54:37,272 INFO ]: Without dead ends: 1751 [2018-06-22 00:54:37,272 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 00:54:37,273 INFO ]: Start minimizeSevpa. Operand 1751 states. [2018-06-22 00:54:37,907 INFO ]: Finished minimizeSevpa. Reduced states from 1751 to 1751. [2018-06-22 00:54:37,907 INFO ]: Start removeUnreachable. Operand 1751 states. [2018-06-22 00:54:38,031 INFO ]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 6011 transitions. [2018-06-22 00:54:38,031 INFO ]: Start accepts. Automaton has 1751 states and 6011 transitions. Word has length 20 [2018-06-22 00:54:38,032 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:54:38,032 INFO ]: Abstraction has 1751 states and 6011 transitions. [2018-06-22 00:54:38,032 INFO ]: Interpolant automaton has 4 states. [2018-06-22 00:54:38,032 INFO ]: Start isEmpty. Operand 1751 states and 6011 transitions. [2018-06-22 00:54:38,056 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-22 00:54:38,056 INFO ]: Found error trace [2018-06-22 00:54:38,056 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:54:38,056 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:54:38,056 INFO ]: Analyzing trace with hash 1701272891, now seen corresponding path program 1 times [2018-06-22 00:54:38,057 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:54:38,057 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:54:38,057 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:38,057 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:54:38,057 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:38,093 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:54:38,654 INFO ]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 00:54:38,654 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:54:38,654 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 00:54:38,654 INFO ]: Interpolant automaton has 7 states [2018-06-22 00:54:38,654 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 00:54:38,654 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 00:54:38,654 INFO ]: Start difference. First operand 1751 states and 6011 transitions. Second operand 7 states. [2018-06-22 00:54:42,193 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 00:54:42,193 INFO ]: Finished difference Result 4152 states and 23046 transitions. [2018-06-22 00:54:42,193 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 00:54:42,193 INFO ]: Start accepts. Automaton has 7 states. Word has length 20 [2018-06-22 00:54:42,193 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 00:54:43,964 INFO ]: With dead ends: 4152 [2018-06-22 00:54:43,964 INFO ]: Without dead ends: 4151 [2018-06-22 00:54:43,964 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-06-22 00:54:43,965 INFO ]: Start minimizeSevpa. Operand 4151 states. [2018-06-22 00:54:45,508 INFO ]: Finished minimizeSevpa. Reduced states from 4151 to 2519. [2018-06-22 00:54:45,508 INFO ]: Start removeUnreachable. Operand 2519 states. [2018-06-22 00:54:45,723 INFO ]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 8562 transitions. [2018-06-22 00:54:45,724 INFO ]: Start accepts. Automaton has 2519 states and 8562 transitions. Word has length 20 [2018-06-22 00:54:45,724 INFO ]: Finished accepts. word is rejected. [2018-06-22 00:54:45,724 INFO ]: Abstraction has 2519 states and 8562 transitions. [2018-06-22 00:54:45,724 INFO ]: Interpolant automaton has 7 states. [2018-06-22 00:54:45,724 INFO ]: Start isEmpty. Operand 2519 states and 8562 transitions. [2018-06-22 00:54:45,738 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-22 00:54:45,738 INFO ]: Found error trace [2018-06-22 00:54:45,738 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 00:54:45,738 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 00:54:45,739 INFO ]: Analyzing trace with hash 1230690898, now seen corresponding path program 1 times [2018-06-22 00:54:45,739 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 00:54:45,739 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 00:54:45,739 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:45,739 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 00:54:45,739 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 00:54:45,755 INFO ]: Conjunction of SSA is unsat [2018-06-22 00:54:45,871 INFO ]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 00:54:45,871 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 00:54:45,871 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 00:54:45,871 INFO ]: Interpolant automaton has 8 states [2018-06-22 00:54:45,872 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 00:54:45,872 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 00:54:45,872 INFO ]: Start difference. First operand 2519 states and 8562 transitions. Second operand 8 states. Received shutdown request... [2018-06-22 00:54:57,598 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 00:54:57,598 WARN ]: Verification canceled [2018-06-22 00:54:57,603 WARN ]: Timeout [2018-06-22 00:54:57,603 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:54:57 BoogieIcfgContainer [2018-06-22 00:54:57,603 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 00:54:57,604 INFO ]: Toolchain (without parser) took 58610.91 ms. Allocated memory was 307.2 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 255.3 MB in the beginning and 714.0 MB in the end (delta: -458.7 MB). Peak memory consumption was 835.8 MB. Max. memory is 3.6 GB. [2018-06-22 00:54:57,605 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 273.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 00:54:57,605 INFO ]: ChcToBoogie took 96.26 ms. Allocated memory is still 307.2 MB. Free memory was 255.3 MB in the beginning and 252.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:54:57,606 INFO ]: Boogie Preprocessor took 48.26 ms. Allocated memory is still 307.2 MB. Free memory was 252.3 MB in the beginning and 250.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:54:57,606 INFO ]: RCFGBuilder took 1278.90 ms. Allocated memory is still 307.2 MB. Free memory was 250.3 MB in the beginning and 200.3 MB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 3.6 GB. [2018-06-22 00:54:57,607 INFO ]: TraceAbstraction took 57178.59 ms. Allocated memory was 307.2 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 199.3 MB in the beginning and 714.0 MB in the end (delta: -514.7 MB). Peak memory consumption was 779.8 MB. Max. memory is 3.6 GB. [2018-06-22 00:54:57,614 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 273.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 96.26 ms. Allocated memory is still 307.2 MB. Free memory was 255.3 MB in the beginning and 252.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 48.26 ms. Allocated memory is still 307.2 MB. Free memory was 252.3 MB in the beginning and 250.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1278.90 ms. Allocated memory is still 307.2 MB. Free memory was 250.3 MB in the beginning and 200.3 MB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 57178.59 ms. Allocated memory was 307.2 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 199.3 MB in the beginning and 714.0 MB in the end (delta: -514.7 MB). Peak memory consumption was 779.8 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 (2519states) and interpolant automaton (currently 21 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (5440 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 146 locations, 1 error locations. TIMEOUT Result, 57.1s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 48.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4990 SDtfs, 1784 SDslu, 16402 SDs, 0 SdLazy, 34761 SolverSat, 6572 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2519occurred 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: 5.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 3204 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 4410 SizeOfPredicates, 10 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 28/30 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/slow-hull.56.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_00-54-57-628.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/slow-hull.56.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_00-54-57-628.csv Completed graceful shutdown