java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2eb0a67 [2018-10-03 08:47:17,311 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 08:47:17,314 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 08:47:17,329 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-03 08:47:17,330 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-03 08:47:17,331 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-03 08:47:17,332 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-03 08:47:17,334 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-03 08:47:17,336 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-03 08:47:17,336 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-03 08:47:17,337 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-03 08:47:17,338 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-03 08:47:17,339 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-03 08:47:17,340 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-03 08:47:17,341 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-03 08:47:17,342 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-03 08:47:17,342 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-03 08:47:17,344 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-03 08:47:17,346 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-03 08:47:17,348 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-03 08:47:17,349 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-03 08:47:17,350 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-03 08:47:17,353 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-03 08:47:17,353 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-03 08:47:17,353 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-03 08:47:17,354 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-03 08:47:17,356 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-03 08:47:17,356 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-03 08:47:17,357 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-03 08:47:17,358 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-03 08:47:17,359 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-03 08:47:17,359 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-03 08:47:17,360 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-03 08:47:17,360 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-03 08:47:17,361 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-03 08:47:17,362 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-03 08:47:17,362 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-03 08:47:17,387 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 08:47:17,387 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 08:47:17,389 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 08:47:17,389 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 08:47:17,390 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 08:47:17,390 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 08:47:17,390 INFO L133 SettingsManager]: * Use SBE=true [2018-10-03 08:47:17,391 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 08:47:17,391 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 08:47:17,391 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 08:47:17,391 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 08:47:17,392 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 08:47:17,393 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 08:47:17,393 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 08:47:17,393 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 08:47:17,393 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 08:47:17,393 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 08:47:17,395 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 08:47:17,395 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 08:47:17,395 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-03 08:47:17,395 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 08:47:17,395 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-03 08:47:17,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 08:47:17,396 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 08:47:17,396 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 08:47:17,396 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 08:47:17,396 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-03 08:47:17,397 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 08:47:17,397 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 08:47:17,397 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 08:47:17,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 08:47:17,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 08:47:17,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 08:47:17,471 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 08:47:17,472 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 08:47:17,473 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl [2018-10-03 08:47:17,473 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl' [2018-10-03 08:47:17,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 08:47:17,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 08:47:17,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 08:47:17,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 08:47:17,553 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 08:47:17,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:47:17" (1/1) ... [2018-10-03 08:47:17,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:47:17" (1/1) ... [2018-10-03 08:47:17,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 08:47:17,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 08:47:17,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 08:47:17,596 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 08:47:17,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:47:17" (1/1) ... [2018-10-03 08:47:17,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:47:17" (1/1) ... [2018-10-03 08:47:17,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:47:17" (1/1) ... [2018-10-03 08:47:17,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:47:17" (1/1) ... [2018-10-03 08:47:17,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:47:17" (1/1) ... [2018-10-03 08:47:17,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:47:17" (1/1) ... [2018-10-03 08:47:17,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:47:17" (1/1) ... [2018-10-03 08:47:17,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 08:47:17,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 08:47:17,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 08:47:17,617 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 08:47:17,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:47:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 08:47:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-03 08:47:17,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-03 08:47:17,952 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-03 08:47:17,953 INFO L202 PluginConnector]: Adding new model nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 08:47:17 BoogieIcfgContainer [2018-10-03 08:47:17,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 08:47:17,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-03 08:47:17,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-03 08:47:17,958 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-03 08:47:17,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 08:47:17" (1/2) ... [2018-10-03 08:47:17,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36dfba1f and model type nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 08:47:17, skipping insertion in model container [2018-10-03 08:47:17,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 08:47:17" (2/2) ... [2018-10-03 08:47:17,962 INFO L112 eAbstractionObserver]: Analyzing ICFG nested.i_4.bpl [2018-10-03 08:47:17,973 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-03 08:47:17,982 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-03 08:47:18,034 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-03 08:47:18,035 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-03 08:47:18,035 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-03 08:47:18,035 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-03 08:47:18,035 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-03 08:47:18,036 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-03 08:47:18,036 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-03 08:47:18,036 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-03 08:47:18,036 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-03 08:47:18,052 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-03 08:47:18,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-03 08:47:18,059 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:18,060 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-03 08:47:18,061 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:18,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:18,068 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-03 08:47:18,070 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:18,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:18,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:18,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:47:18,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:47:18,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 08:47:18,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 08:47:18,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 08:47:18,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 08:47:18,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-03 08:47:18,273 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-03 08:47:18,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:18,349 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-10-03 08:47:18,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 08:47:18,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-03 08:47:18,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:18,361 INFO L225 Difference]: With dead ends: 17 [2018-10-03 08:47:18,362 INFO L226 Difference]: Without dead ends: 11 [2018-10-03 08:47:18,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-03 08:47:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-03 08:47:18,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-10-03 08:47:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-03 08:47:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-10-03 08:47:18,404 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2018-10-03 08:47:18,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:18,404 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-10-03 08:47:18,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 08:47:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-10-03 08:47:18,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 08:47:18,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:18,405 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-10-03 08:47:18,405 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:18,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:18,406 INFO L82 PathProgramCache]: Analyzing trace with hash 209100445, now seen corresponding path program 1 times [2018-10-03 08:47:18,406 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:18,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:18,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:18,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:47:18,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:47:18,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 08:47:18,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-03 08:47:18,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 08:47:18,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 08:47:18,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-03 08:47:18,532 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2018-10-03 08:47:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:18,619 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2018-10-03 08:47:18,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-03 08:47:18,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-03 08:47:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:18,621 INFO L225 Difference]: With dead ends: 17 [2018-10-03 08:47:18,621 INFO L226 Difference]: Without dead ends: 11 [2018-10-03 08:47:18,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-03 08:47:18,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-03 08:47:18,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-03 08:47:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-03 08:47:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-03 08:47:18,626 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-10-03 08:47:18,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:18,627 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-03 08:47:18,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 08:47:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-03 08:47:18,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-03 08:47:18,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:18,628 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-10-03 08:47:18,628 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:18,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:18,629 INFO L82 PathProgramCache]: Analyzing trace with hash -850198025, now seen corresponding path program 1 times [2018-10-03 08:47:18,629 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:18,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:18,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:18,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:47:18,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:47:18,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:18,755 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:47:18,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:47:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:18,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:47:18,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:18,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-10-03 08:47:18,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-03 08:47:18,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-03 08:47:18,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-03 08:47:18,934 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 7 states. [2018-10-03 08:47:19,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:19,019 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-10-03 08:47:19,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 08:47:19,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-10-03 08:47:19,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:19,021 INFO L225 Difference]: With dead ends: 21 [2018-10-03 08:47:19,022 INFO L226 Difference]: Without dead ends: 13 [2018-10-03 08:47:19,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-03 08:47:19,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-03 08:47:19,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-03 08:47:19,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-03 08:47:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-10-03 08:47:19,027 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-10-03 08:47:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:19,028 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-10-03 08:47:19,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-03 08:47:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-10-03 08:47:19,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-03 08:47:19,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:19,029 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-10-03 08:47:19,029 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:19,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:19,030 INFO L82 PathProgramCache]: Analyzing trace with hash -928778543, now seen corresponding path program 2 times [2018-10-03 08:47:19,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:19,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:19,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:19,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:47:19,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 08:47:19,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:19,319 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-03 08:47:19,335 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:47:19,375 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 08:47:19,376 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:47:19,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:19,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-03 08:47:19,482 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:19,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2018-10-03 08:47:19,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-03 08:47:19,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-03 08:47:19,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-03 08:47:19,484 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-10-03 08:47:19,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:19,950 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-10-03 08:47:19,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-03 08:47:19,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-10-03 08:47:19,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:19,953 INFO L225 Difference]: With dead ends: 43 [2018-10-03 08:47:19,953 INFO L226 Difference]: Without dead ends: 33 [2018-10-03 08:47:19,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2018-10-03 08:47:19,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-03 08:47:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-10-03 08:47:19,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-03 08:47:19,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-03 08:47:19,963 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2018-10-03 08:47:19,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:19,965 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-03 08:47:19,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-03 08:47:19,965 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-03 08:47:19,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-03 08:47:19,966 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:19,967 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 3, 2, 2, 1, 1, 1] [2018-10-03 08:47:19,967 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:19,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:19,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1778757007, now seen corresponding path program 3 times [2018-10-03 08:47:19,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:19,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:19,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:19,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:47:19,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-03 08:47:20,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:20,136 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-10-03 08:47:20,151 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 08:47:20,196 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-03 08:47:20,197 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:47:20,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-03 08:47:20,518 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:20,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-03 08:47:20,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-03 08:47:20,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-03 08:47:20,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-03 08:47:20,520 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 10 states. [2018-10-03 08:47:21,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:21,149 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2018-10-03 08:47:21,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-03 08:47:21,152 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-10-03 08:47:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:21,154 INFO L225 Difference]: With dead ends: 65 [2018-10-03 08:47:21,154 INFO L226 Difference]: Without dead ends: 51 [2018-10-03 08:47:21,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2018-10-03 08:47:21,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-03 08:47:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2018-10-03 08:47:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-03 08:47:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-10-03 08:47:21,168 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2018-10-03 08:47:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:21,168 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-10-03 08:47:21,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-03 08:47:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-10-03 08:47:21,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-03 08:47:21,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:21,170 INFO L375 BasicCegarLoop]: trace histogram [15, 12, 4, 3, 3, 1, 1, 1] [2018-10-03 08:47:21,170 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:21,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:21,171 INFO L82 PathProgramCache]: Analyzing trace with hash 209827969, now seen corresponding path program 4 times [2018-10-03 08:47:21,171 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:21,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:21,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:21,172 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:47:21,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 106 proven. 20 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-03 08:47:21,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:21,321 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:47:21,329 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 08:47:21,354 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 08:47:21,354 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:47:21,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:21,448 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 106 proven. 20 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-03 08:47:21,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:21,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-10-03 08:47:21,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-03 08:47:21,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-03 08:47:21,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-10-03 08:47:21,470 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 13 states. [2018-10-03 08:47:21,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:21,523 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2018-10-03 08:47:21,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 08:47:21,524 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-10-03 08:47:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:21,525 INFO L225 Difference]: With dead ends: 75 [2018-10-03 08:47:21,525 INFO L226 Difference]: Without dead ends: 47 [2018-10-03 08:47:21,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-10-03 08:47:21,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-03 08:47:21,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-03 08:47:21,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-03 08:47:21,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2018-10-03 08:47:21,539 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 40 [2018-10-03 08:47:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:21,540 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-10-03 08:47:21,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-03 08:47:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2018-10-03 08:47:21,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-03 08:47:21,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:21,542 INFO L375 BasicCegarLoop]: trace histogram [18, 15, 4, 3, 3, 1, 1, 1] [2018-10-03 08:47:21,542 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:21,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:21,542 INFO L82 PathProgramCache]: Analyzing trace with hash -254509681, now seen corresponding path program 5 times [2018-10-03 08:47:21,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:21,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:21,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:21,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:47:21,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 150 proven. 30 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-03 08:47:21,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:21,682 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:47:21,696 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 08:47:21,785 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2018-10-03 08:47:21,785 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:47:21,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 150 proven. 30 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-03 08:47:21,971 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:21,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-10-03 08:47:21,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-03 08:47:21,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-03 08:47:21,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2018-10-03 08:47:21,972 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 15 states. [2018-10-03 08:47:22,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:22,035 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2018-10-03 08:47:22,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-03 08:47:22,036 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2018-10-03 08:47:22,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:22,037 INFO L225 Difference]: With dead ends: 85 [2018-10-03 08:47:22,037 INFO L226 Difference]: Without dead ends: 53 [2018-10-03 08:47:22,038 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2018-10-03 08:47:22,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-03 08:47:22,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-03 08:47:22,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-03 08:47:22,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2018-10-03 08:47:22,051 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 46 [2018-10-03 08:47:22,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:22,051 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2018-10-03 08:47:22,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-03 08:47:22,052 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2018-10-03 08:47:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-03 08:47:22,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:22,053 INFO L375 BasicCegarLoop]: trace histogram [21, 18, 4, 3, 3, 1, 1, 1] [2018-10-03 08:47:22,054 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:22,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:22,054 INFO L82 PathProgramCache]: Analyzing trace with hash -996261859, now seen corresponding path program 6 times [2018-10-03 08:47:22,054 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:22,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:22,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:22,055 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:47:22,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:22,350 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 202 proven. 42 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-10-03 08:47:22,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:22,350 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-10-03 08:47:22,359 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 08:47:22,383 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-10-03 08:47:22,383 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:47:22,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-10-03 08:47:22,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:22,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2018-10-03 08:47:22,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-03 08:47:22,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-03 08:47:22,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-10-03 08:47:22,544 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 14 states. [2018-10-03 08:47:22,991 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-03 08:47:24,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:24,274 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2018-10-03 08:47:24,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-03 08:47:24,275 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2018-10-03 08:47:24,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:24,277 INFO L225 Difference]: With dead ends: 129 [2018-10-03 08:47:24,277 INFO L226 Difference]: Without dead ends: 93 [2018-10-03 08:47:24,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=850, Invalid=1906, Unknown=0, NotChecked=0, Total=2756 [2018-10-03 08:47:24,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-03 08:47:24,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2018-10-03 08:47:24,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-03 08:47:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2018-10-03 08:47:24,299 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 52 [2018-10-03 08:47:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:24,299 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2018-10-03 08:47:24,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-03 08:47:24,300 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2018-10-03 08:47:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-03 08:47:24,302 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:24,302 INFO L375 BasicCegarLoop]: trace histogram [32, 28, 5, 4, 4, 1, 1, 1] [2018-10-03 08:47:24,302 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:24,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:24,303 INFO L82 PathProgramCache]: Analyzing trace with hash -252111625, now seen corresponding path program 7 times [2018-10-03 08:47:24,303 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:24,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:24,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:24,304 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:47:24,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 392 proven. 56 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2018-10-03 08:47:24,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:24,651 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-10-03 08:47:24,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:47:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:24,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:25,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 392 proven. 56 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2018-10-03 08:47:25,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:25,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-10-03 08:47:25,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-03 08:47:25,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-03 08:47:25,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2018-10-03 08:47:25,173 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 19 states. [2018-10-03 08:47:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:25,418 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2018-10-03 08:47:25,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-03 08:47:25,418 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 76 [2018-10-03 08:47:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:25,419 INFO L225 Difference]: With dead ends: 143 [2018-10-03 08:47:25,419 INFO L226 Difference]: Without dead ends: 85 [2018-10-03 08:47:25,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2018-10-03 08:47:25,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-03 08:47:25,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-03 08:47:25,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-03 08:47:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2018-10-03 08:47:25,446 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 76 [2018-10-03 08:47:25,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:25,447 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2018-10-03 08:47:25,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-03 08:47:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2018-10-03 08:47:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-03 08:47:25,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:25,453 INFO L375 BasicCegarLoop]: trace histogram [36, 32, 5, 4, 4, 1, 1, 1] [2018-10-03 08:47:25,453 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:25,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:25,454 INFO L82 PathProgramCache]: Analyzing trace with hash 771511391, now seen corresponding path program 8 times [2018-10-03 08:47:25,454 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:25,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:25,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:25,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:47:25,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 494 proven. 72 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-10-03 08:47:25,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:25,720 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2018-10-03 08:47:25,731 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 08:47:25,778 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 08:47:25,779 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:47:25,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 494 proven. 72 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-10-03 08:47:26,000 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:26,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-10-03 08:47:26,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-03 08:47:26,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-03 08:47:26,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2018-10-03 08:47:26,002 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 21 states. [2018-10-03 08:47:26,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:26,055 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2018-10-03 08:47:26,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-03 08:47:26,065 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 84 [2018-10-03 08:47:26,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:26,069 INFO L225 Difference]: With dead ends: 157 [2018-10-03 08:47:26,070 INFO L226 Difference]: Without dead ends: 93 [2018-10-03 08:47:26,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2018-10-03 08:47:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-03 08:47:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-03 08:47:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-03 08:47:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-10-03 08:47:26,097 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 84 [2018-10-03 08:47:26,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:26,097 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-10-03 08:47:26,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-03 08:47:26,100 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-10-03 08:47:26,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-03 08:47:26,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:26,102 INFO L375 BasicCegarLoop]: trace histogram [40, 36, 5, 4, 4, 1, 1, 1] [2018-10-03 08:47:26,102 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:26,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:26,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1630563271, now seen corresponding path program 9 times [2018-10-03 08:47:26,104 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:26,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:26,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:26,105 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:47:26,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 608 proven. 90 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-10-03 08:47:26,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:26,311 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:47:26,322 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 08:47:26,402 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-10-03 08:47:26,402 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:47:26,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 608 proven. 90 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-10-03 08:47:26,696 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:26,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2018-10-03 08:47:26,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-03 08:47:26,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-03 08:47:26,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-10-03 08:47:26,698 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 23 states. [2018-10-03 08:47:26,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:26,762 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2018-10-03 08:47:26,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-03 08:47:26,764 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 92 [2018-10-03 08:47:26,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:26,765 INFO L225 Difference]: With dead ends: 171 [2018-10-03 08:47:26,765 INFO L226 Difference]: Without dead ends: 101 [2018-10-03 08:47:26,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-10-03 08:47:26,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-03 08:47:26,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-03 08:47:26,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-03 08:47:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2018-10-03 08:47:26,785 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 92 [2018-10-03 08:47:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:26,785 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2018-10-03 08:47:26,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-03 08:47:26,786 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2018-10-03 08:47:26,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-03 08:47:26,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:26,787 INFO L375 BasicCegarLoop]: trace histogram [44, 40, 5, 4, 4, 1, 1, 1] [2018-10-03 08:47:26,787 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:26,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:26,788 INFO L82 PathProgramCache]: Analyzing trace with hash -220374225, now seen corresponding path program 10 times [2018-10-03 08:47:26,788 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:26,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:26,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:26,789 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:47:26,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-10-03 08:47:27,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:27,184 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:47:27,192 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 08:47:27,260 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 08:47:27,261 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:47:27,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-10-03 08:47:27,400 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:27,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-03 08:47:27,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-03 08:47:27,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-03 08:47:27,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-10-03 08:47:27,402 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 12 states. [2018-10-03 08:47:27,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:27,570 INFO L93 Difference]: Finished difference Result 149 states and 155 transitions. [2018-10-03 08:47:27,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-03 08:47:27,570 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2018-10-03 08:47:27,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:27,572 INFO L225 Difference]: With dead ends: 149 [2018-10-03 08:47:27,572 INFO L226 Difference]: Without dead ends: 147 [2018-10-03 08:47:27,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-10-03 08:47:27,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-03 08:47:27,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 125. [2018-10-03 08:47:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-03 08:47:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2018-10-03 08:47:27,596 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 100 [2018-10-03 08:47:27,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:27,597 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2018-10-03 08:47:27,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-03 08:47:27,597 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2018-10-03 08:47:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-03 08:47:27,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:27,598 INFO L375 BasicCegarLoop]: trace histogram [55, 50, 6, 5, 5, 1, 1, 1] [2018-10-03 08:47:27,599 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:27,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:27,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1446024969, now seen corresponding path program 11 times [2018-10-03 08:47:27,599 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:27,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:27,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:27,600 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:47:27,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3000 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2018-10-03 08:47:28,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:28,016 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:47:28,023 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 08:47:28,105 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-03 08:47:28,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:47:28,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3000 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2018-10-03 08:47:28,292 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:28,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-10-03 08:47:28,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-03 08:47:28,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-03 08:47:28,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2018-10-03 08:47:28,293 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 14 states. [2018-10-03 08:47:28,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:28,420 INFO L93 Difference]: Finished difference Result 173 states and 180 transitions. [2018-10-03 08:47:28,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 08:47:28,421 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 124 [2018-10-03 08:47:28,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:28,422 INFO L225 Difference]: With dead ends: 173 [2018-10-03 08:47:28,423 INFO L226 Difference]: Without dead ends: 171 [2018-10-03 08:47:28,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2018-10-03 08:47:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-03 08:47:28,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 149. [2018-10-03 08:47:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-03 08:47:28,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2018-10-03 08:47:28,450 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 124 [2018-10-03 08:47:28,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:28,450 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2018-10-03 08:47:28,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-03 08:47:28,451 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2018-10-03 08:47:28,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-03 08:47:28,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:28,452 INFO L375 BasicCegarLoop]: trace histogram [66, 60, 7, 6, 6, 1, 1, 1] [2018-10-03 08:47:28,453 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:28,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:28,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1667523811, now seen corresponding path program 12 times [2018-10-03 08:47:28,453 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:28,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:28,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:28,454 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:47:28,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 3672 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-10-03 08:47:28,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:28,740 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:47:28,748 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 08:47:28,859 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-03 08:47:28,860 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:47:28,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 3672 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-10-03 08:47:29,081 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:29,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-10-03 08:47:29,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-03 08:47:29,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-03 08:47:29,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-10-03 08:47:29,082 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand 16 states. [2018-10-03 08:47:29,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:29,205 INFO L93 Difference]: Finished difference Result 197 states and 205 transitions. [2018-10-03 08:47:29,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-03 08:47:29,205 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 148 [2018-10-03 08:47:29,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:29,207 INFO L225 Difference]: With dead ends: 197 [2018-10-03 08:47:29,207 INFO L226 Difference]: Without dead ends: 195 [2018-10-03 08:47:29,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-10-03 08:47:29,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-03 08:47:29,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 173. [2018-10-03 08:47:29,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-03 08:47:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 180 transitions. [2018-10-03 08:47:29,232 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 180 transitions. Word has length 148 [2018-10-03 08:47:29,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:29,233 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 180 transitions. [2018-10-03 08:47:29,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-03 08:47:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 180 transitions. [2018-10-03 08:47:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-03 08:47:29,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:29,235 INFO L375 BasicCegarLoop]: trace histogram [77, 70, 8, 7, 7, 1, 1, 1] [2018-10-03 08:47:29,235 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:29,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:29,235 INFO L82 PathProgramCache]: Analyzing trace with hash 107136189, now seen corresponding path program 13 times [2018-10-03 08:47:29,236 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:29,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:29,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:29,237 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:47:29,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5908 backedges. 0 proven. 5138 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-10-03 08:47:29,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:29,460 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:47:29,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:47:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:29,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5908 backedges. 0 proven. 5138 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-10-03 08:47:29,748 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:29,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-10-03 08:47:29,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-03 08:47:29,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-03 08:47:29,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2018-10-03 08:47:29,749 INFO L87 Difference]: Start difference. First operand 173 states and 180 transitions. Second operand 18 states. [2018-10-03 08:47:29,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:29,885 INFO L93 Difference]: Finished difference Result 221 states and 230 transitions. [2018-10-03 08:47:29,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-03 08:47:29,885 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2018-10-03 08:47:29,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:29,887 INFO L225 Difference]: With dead ends: 221 [2018-10-03 08:47:29,887 INFO L226 Difference]: Without dead ends: 219 [2018-10-03 08:47:29,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2018-10-03 08:47:29,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-03 08:47:29,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 197. [2018-10-03 08:47:29,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-03 08:47:29,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 205 transitions. [2018-10-03 08:47:29,920 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 205 transitions. Word has length 172 [2018-10-03 08:47:29,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:29,921 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 205 transitions. [2018-10-03 08:47:29,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-03 08:47:29,921 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 205 transitions. [2018-10-03 08:47:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-03 08:47:29,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:29,923 INFO L375 BasicCegarLoop]: trace histogram [88, 80, 9, 8, 8, 1, 1, 1] [2018-10-03 08:47:29,923 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:29,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:29,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1927956841, now seen corresponding path program 14 times [2018-10-03 08:47:29,924 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:29,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:29,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:29,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 08:47:29,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7728 backedges. 0 proven. 6848 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2018-10-03 08:47:30,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:30,992 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:47:31,000 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 08:47:31,095 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 08:47:31,095 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:47:31,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7728 backedges. 0 proven. 6848 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2018-10-03 08:47:31,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:31,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-10-03 08:47:31,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-03 08:47:31,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-03 08:47:31,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-10-03 08:47:31,312 INFO L87 Difference]: Start difference. First operand 197 states and 205 transitions. Second operand 20 states. [2018-10-03 08:47:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:31,441 INFO L93 Difference]: Finished difference Result 245 states and 255 transitions. [2018-10-03 08:47:31,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-03 08:47:31,441 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 196 [2018-10-03 08:47:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:31,443 INFO L225 Difference]: With dead ends: 245 [2018-10-03 08:47:31,443 INFO L226 Difference]: Without dead ends: 243 [2018-10-03 08:47:31,443 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-10-03 08:47:31,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-03 08:47:31,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 221. [2018-10-03 08:47:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-03 08:47:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 230 transitions. [2018-10-03 08:47:31,484 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 230 transitions. Word has length 196 [2018-10-03 08:47:31,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:31,484 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 230 transitions. [2018-10-03 08:47:31,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-03 08:47:31,485 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 230 transitions. [2018-10-03 08:47:31,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-03 08:47:31,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:31,487 INFO L375 BasicCegarLoop]: trace histogram [99, 90, 10, 9, 9, 1, 1, 1] [2018-10-03 08:47:31,487 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:31,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:31,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1486407055, now seen corresponding path program 15 times [2018-10-03 08:47:31,488 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:31,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:31,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:31,489 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:47:31,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 9792 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-10-03 08:47:31,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 08:47:31,830 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 08:47:31,837 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 08:47:31,973 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2018-10-03 08:47:31,973 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 08:47:31,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 08:47:32,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9792 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-10-03 08:47:32,211 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 08:47:32,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2018-10-03 08:47:32,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-03 08:47:32,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-03 08:47:32,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2018-10-03 08:47:32,213 INFO L87 Difference]: Start difference. First operand 221 states and 230 transitions. Second operand 22 states. [2018-10-03 08:47:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:32,520 INFO L93 Difference]: Finished difference Result 269 states and 280 transitions. [2018-10-03 08:47:32,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-03 08:47:32,520 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 220 [2018-10-03 08:47:32,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:32,522 INFO L225 Difference]: With dead ends: 269 [2018-10-03 08:47:32,522 INFO L226 Difference]: Without dead ends: 267 [2018-10-03 08:47:32,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=276, Unknown=0, NotChecked=0, Total=462 [2018-10-03 08:47:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-03 08:47:32,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 245. [2018-10-03 08:47:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-03 08:47:32,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 255 transitions. [2018-10-03 08:47:32,565 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 255 transitions. Word has length 220 [2018-10-03 08:47:32,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:32,566 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 255 transitions. [2018-10-03 08:47:32,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-03 08:47:32,566 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 255 transitions. [2018-10-03 08:47:32,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-03 08:47:32,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 08:47:32,568 INFO L375 BasicCegarLoop]: trace histogram [110, 100, 11, 10, 10, 1, 1, 1] [2018-10-03 08:47:32,568 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 08:47:32,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-03 08:47:32,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1732333643, now seen corresponding path program 16 times [2018-10-03 08:47:32,568 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 08:47:32,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 08:47:32,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:32,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 08:47:32,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 08:47:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 08:47:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 12082 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-03 08:47:38,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 08:47:38,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2018-10-03 08:47:38,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-03 08:47:38,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-03 08:47:38,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-10-03 08:47:38,057 INFO L87 Difference]: Start difference. First operand 245 states and 255 transitions. Second operand 103 states. [2018-10-03 08:47:41,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 08:47:41,062 INFO L93 Difference]: Finished difference Result 10235 states and 10695 transitions. [2018-10-03 08:47:41,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-03 08:47:41,063 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 244 [2018-10-03 08:47:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 08:47:41,063 INFO L225 Difference]: With dead ends: 10235 [2018-10-03 08:47:41,063 INFO L226 Difference]: Without dead ends: 0 [2018-10-03 08:47:41,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-10-03 08:47:41,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-03 08:47:41,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-03 08:47:41,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-03 08:47:41,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-03 08:47:41,081 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 244 [2018-10-03 08:47:41,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 08:47:41,081 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-03 08:47:41,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-03 08:47:41,081 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-03 08:47:41,081 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-03 08:47:41,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-03 08:47:47,660 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:47,662 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:47,673 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:47,828 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:47,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:47,971 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:48,081 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:48,118 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:48,311 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:48,382 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:48,609 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:48,681 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:49,016 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:49,066 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:49,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:49,424 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:49,800 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:50,008 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:50,188 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:50,517 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:50,600 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:51,275 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:51,372 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:51,472 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:51,727 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:52,016 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:52,583 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:53,057 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:53,377 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:53,578 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:53,760 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:53,961 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:54,790 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:54,995 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:55,282 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:55,406 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:56,063 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:56,299 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:56,419 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:56,898 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:57,041 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:57,175 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:57,216 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:57,968 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:58,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:58,149 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:58,254 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:58,296 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:58,403 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:58,544 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:59,761 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:47:59,773 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:00,133 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:00,893 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:01,404 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:01,864 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:02,351 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:04,683 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:06,705 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:06,883 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:07,577 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:07,594 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:10,627 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:11,970 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:12,169 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:12,760 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:13,698 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:16,132 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:17,920 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:20,467 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:23,033 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:26,951 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:27,131 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:34,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:48:58,998 WARN L178 SmtUtils]: Spent 1.30 m on a formula simplification. DAG size of input: 5105 DAG size of output: 1935 [2018-10-03 08:49:03,425 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:03,426 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:03,431 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:03,508 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:03,552 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:03,577 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:03,629 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:03,647 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:03,738 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:03,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:03,905 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:03,951 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:04,126 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:04,156 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:04,274 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:04,332 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:04,474 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:04,598 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:04,841 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:05,056 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:05,129 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:05,677 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:05,772 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:05,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:06,105 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:06,373 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:06,764 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:07,185 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:07,477 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:07,658 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:07,826 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:08,028 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:08,958 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:09,088 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:09,403 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:09,540 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:10,190 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:10,412 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:10,527 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:10,984 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:11,125 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:11,257 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:11,288 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:11,855 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:11,990 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:12,033 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:12,142 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:12,184 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:12,436 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:12,583 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:13,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:13,858 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:14,223 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:14,855 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:15,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:15,801 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:16,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:18,418 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:20,655 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:20,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:21,437 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:21,454 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:24,709 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:25,990 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:26,219 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:26,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:27,977 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:30,493 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:32,413 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:34,944 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:37,466 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:41,309 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:41,477 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:49:49,016 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-03 08:50:12,401 WARN L178 SmtUtils]: Spent 1.22 m on a formula simplification. DAG size of input: 5105 DAG size of output: 1935 [2018-10-03 08:50:13,220 WARN L178 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 673 DAG size of output: 664 [2018-10-03 08:50:14,259 WARN L178 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 673 DAG size of output: 664 [2018-10-03 08:51:26,998 WARN L178 SmtUtils]: Spent 1.21 m on a formula simplification. DAG size of input: 1932 DAG size of output: 362 Received shutdown request... [2018-10-03 08:51:33,017 WARN L186 SmtUtils]: Removed 1401 from assertion stack [2018-10-03 08:51:33,017 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-03 08:51:33,019 INFO L168 Benchmark]: Toolchain (without parser) took 255471.13 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 357.2 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-10-03 08:51:33,020 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 08:51:33,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 08:51:33,021 INFO L168 Benchmark]: Boogie Preprocessor took 20.42 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 08:51:33,022 INFO L168 Benchmark]: RCFGBuilder took 337.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-03 08:51:33,022 INFO L168 Benchmark]: TraceAbstraction took 255063.43 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 336.1 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-10-03 08:51:33,026 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.42 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 337.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 255063.43 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 336.1 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: assertion always holds For all program executions holds that assertion always holds at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 1932. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested.i_4.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_08-51-33-037.csv Completed graceful shutdown