java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label18_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:29:16,390 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:29:16,392 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:29:16,410 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:29:16,411 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:29:16,412 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:29:16,414 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:29:16,416 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:29:16,418 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:29:16,419 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:29:16,420 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:29:16,420 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:29:16,421 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:29:16,422 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:29:16,424 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:29:16,424 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:29:16,425 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:29:16,427 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:29:16,429 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:29:16,431 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:29:16,432 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:29:16,433 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:29:16,438 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:29:16,458 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:29:16,484 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:29:16,484 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:29:16,485 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:29:16,485 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:29:16,485 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:29:16,486 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:29:16,486 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:29:16,486 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:29:16,487 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:29:16,487 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:29:16,487 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:29:16,487 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:29:16,488 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:29:16,488 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:29:16,488 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:29:16,489 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:29:16,490 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:29:16,490 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:29:16,490 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:29:16,491 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:29:16,491 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:29:16,491 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:29:16,491 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:29:16,491 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:29:16,492 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:29:16,492 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:29:16,492 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:29:16,493 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:29:16,493 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:29:16,493 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:29:16,493 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:29:16,493 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:29:16,494 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:29:16,494 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:29:16,570 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:29:16,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:29:16,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:29:16,595 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:29:16,595 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:29:16,596 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label18_false-unreach-call_false-termination.c [2018-10-24 18:29:16,668 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/31a4fc238/a9aed078230048aaab82ed637445830e/FLAGbd1a32049 [2018-10-24 18:29:17,279 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:29:17,280 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label18_false-unreach-call_false-termination.c [2018-10-24 18:29:17,293 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/31a4fc238/a9aed078230048aaab82ed637445830e/FLAGbd1a32049 [2018-10-24 18:29:17,309 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/31a4fc238/a9aed078230048aaab82ed637445830e [2018-10-24 18:29:17,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:29:17,326 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:29:17,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:29:17,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:29:17,333 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:29:17,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:29:17" (1/1) ... [2018-10-24 18:29:17,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697c6658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:17, skipping insertion in model container [2018-10-24 18:29:17,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:29:17" (1/1) ... [2018-10-24 18:29:17,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:29:17,435 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:29:18,028 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:29:18,033 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:29:18,200 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:29:18,235 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:29:18,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:18 WrapperNode [2018-10-24 18:29:18,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:29:18,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:29:18,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:29:18,237 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:29:18,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:18" (1/1) ... [2018-10-24 18:29:18,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:18" (1/1) ... [2018-10-24 18:29:18,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:29:18,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:29:18,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:29:18,471 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:29:18,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:18" (1/1) ... [2018-10-24 18:29:18,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:18" (1/1) ... [2018-10-24 18:29:18,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:18" (1/1) ... [2018-10-24 18:29:18,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:18" (1/1) ... [2018-10-24 18:29:18,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:18" (1/1) ... [2018-10-24 18:29:18,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:18" (1/1) ... [2018-10-24 18:29:18,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:18" (1/1) ... [2018-10-24 18:29:18,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:29:18,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:29:18,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:29:18,588 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:29:18,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 18:29:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:29:18,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:29:18,650 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:29:18,650 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:29:18,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:29:18,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:29:18,651 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:29:18,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:29:22,307 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:29:22,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:29:22 BoogieIcfgContainer [2018-10-24 18:29:22,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:29:22,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:29:22,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:29:22,313 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:29:22,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:29:17" (1/3) ... [2018-10-24 18:29:22,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c841701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:29:22, skipping insertion in model container [2018-10-24 18:29:22,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:18" (2/3) ... [2018-10-24 18:29:22,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c841701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:29:22, skipping insertion in model container [2018-10-24 18:29:22,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:29:22" (3/3) ... [2018-10-24 18:29:22,318 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label18_false-unreach-call_false-termination.c [2018-10-24 18:29:22,329 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:29:22,345 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:29:22,363 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:29:22,405 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:29:22,405 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:29:22,406 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:29:22,406 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:29:22,406 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:29:22,406 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:29:22,406 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:29:22,407 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:29:22,436 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 18:29:22,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-24 18:29:22,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:22,446 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:29:22,448 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:22,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:22,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1102651839, now seen corresponding path program 1 times [2018-10-24 18:29:22,459 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:22,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:22,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:22,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:22,519 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:22,932 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:29:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:29:22,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:22,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:29:22,959 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:22,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:29:22,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:29:22,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:29:22,980 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 18:29:24,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:24,775 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 18:29:24,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:29:24,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-10-24 18:29:24,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:24,802 INFO L225 Difference]: With dead ends: 691 [2018-10-24 18:29:24,802 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 18:29:24,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:29:24,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 18:29:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 18:29:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 18:29:24,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 18:29:24,908 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 27 [2018-10-24 18:29:24,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:24,909 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 18:29:24,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:29:24,909 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 18:29:24,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-24 18:29:24,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:24,915 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:29:24,915 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:24,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:24,916 INFO L82 PathProgramCache]: Analyzing trace with hash 122089084, now seen corresponding path program 1 times [2018-10-24 18:29:24,916 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:24,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:24,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:24,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:24,918 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:24,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:29:25,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:25,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:29:25,236 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:25,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:29:25,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:29:25,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:29:25,239 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 18:29:29,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:29,282 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-10-24 18:29:29,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:29:29,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2018-10-24 18:29:29,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:29,299 INFO L225 Difference]: With dead ends: 1588 [2018-10-24 18:29:29,299 INFO L226 Difference]: Without dead ends: 1160 [2018-10-24 18:29:29,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:29:29,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-10-24 18:29:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-10-24 18:29:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-10-24 18:29:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-10-24 18:29:29,373 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 97 [2018-10-24 18:29:29,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:29,373 INFO L481 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-10-24 18:29:29,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:29:29,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-10-24 18:29:29,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 18:29:29,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:29,377 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:29:29,377 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:29,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:29,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1764602551, now seen corresponding path program 1 times [2018-10-24 18:29:29,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:29,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:29,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:29,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:29,380 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:29,661 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:29:29,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:29,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:29:29,662 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:29,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:29:29,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:29:29,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:29:29,666 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 5 states. [2018-10-24 18:29:32,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:32,206 INFO L93 Difference]: Finished difference Result 2716 states and 4601 transitions. [2018-10-24 18:29:32,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:29:32,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2018-10-24 18:29:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:32,229 INFO L225 Difference]: With dead ends: 2716 [2018-10-24 18:29:32,229 INFO L226 Difference]: Without dead ends: 1569 [2018-10-24 18:29:32,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:29:32,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2018-10-24 18:29:32,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1538. [2018-10-24 18:29:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2018-10-24 18:29:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2356 transitions. [2018-10-24 18:29:32,305 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2356 transitions. Word has length 98 [2018-10-24 18:29:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:32,306 INFO L481 AbstractCegarLoop]: Abstraction has 1538 states and 2356 transitions. [2018-10-24 18:29:32,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:29:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2356 transitions. [2018-10-24 18:29:32,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-24 18:29:32,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:32,308 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:29:32,312 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:32,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:32,313 INFO L82 PathProgramCache]: Analyzing trace with hash -263336997, now seen corresponding path program 1 times [2018-10-24 18:29:32,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:32,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:32,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:32,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:32,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:29:32,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:32,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:29:32,529 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:32,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:29:32,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:29:32,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:29:32,530 INFO L87 Difference]: Start difference. First operand 1538 states and 2356 transitions. Second operand 5 states. [2018-10-24 18:29:35,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:35,309 INFO L93 Difference]: Finished difference Result 4905 states and 7502 transitions. [2018-10-24 18:29:35,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:29:35,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2018-10-24 18:29:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:35,342 INFO L225 Difference]: With dead ends: 4905 [2018-10-24 18:29:35,342 INFO L226 Difference]: Without dead ends: 3373 [2018-10-24 18:29:35,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:29:35,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2018-10-24 18:29:35,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 3262. [2018-10-24 18:29:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3262 states. [2018-10-24 18:29:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 4435 transitions. [2018-10-24 18:29:35,462 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 4435 transitions. Word has length 100 [2018-10-24 18:29:35,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:35,463 INFO L481 AbstractCegarLoop]: Abstraction has 3262 states and 4435 transitions. [2018-10-24 18:29:35,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:29:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 4435 transitions. [2018-10-24 18:29:35,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-24 18:29:35,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:35,470 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:29:35,470 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:35,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:35,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1806492795, now seen corresponding path program 1 times [2018-10-24 18:29:35,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:35,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:35,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:35,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:35,472 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-24 18:29:35,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:35,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:29:35,675 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:35,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:29:35,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:29:35,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:29:35,677 INFO L87 Difference]: Start difference. First operand 3262 states and 4435 transitions. Second operand 4 states. [2018-10-24 18:29:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:38,162 INFO L93 Difference]: Finished difference Result 8791 states and 12460 transitions. [2018-10-24 18:29:38,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:29:38,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 185 [2018-10-24 18:29:38,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:38,197 INFO L225 Difference]: With dead ends: 8791 [2018-10-24 18:29:38,198 INFO L226 Difference]: Without dead ends: 5535 [2018-10-24 18:29:38,221 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:29:38,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5535 states. [2018-10-24 18:29:38,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5535 to 5535. [2018-10-24 18:29:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5535 states. [2018-10-24 18:29:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 7487 transitions. [2018-10-24 18:29:38,370 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 7487 transitions. Word has length 185 [2018-10-24 18:29:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:38,371 INFO L481 AbstractCegarLoop]: Abstraction has 5535 states and 7487 transitions. [2018-10-24 18:29:38,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:29:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 7487 transitions. [2018-10-24 18:29:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-24 18:29:38,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:38,386 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:29:38,386 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:38,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:38,387 INFO L82 PathProgramCache]: Analyzing trace with hash -459245327, now seen corresponding path program 1 times [2018-10-24 18:29:38,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:38,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:38,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:38,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:38,388 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-24 18:29:38,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:38,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:29:38,579 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:38,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:29:38,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:29:38,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:29:38,580 INFO L87 Difference]: Start difference. First operand 5535 states and 7487 transitions. Second operand 3 states. [2018-10-24 18:29:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:39,730 INFO L93 Difference]: Finished difference Result 13571 states and 18960 transitions. [2018-10-24 18:29:39,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:29:39,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 245 [2018-10-24 18:29:39,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:39,778 INFO L225 Difference]: With dead ends: 13571 [2018-10-24 18:29:39,778 INFO L226 Difference]: Without dead ends: 8042 [2018-10-24 18:29:39,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:29:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8042 states. [2018-10-24 18:29:40,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8042 to 8040. [2018-10-24 18:29:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8040 states. [2018-10-24 18:29:40,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8040 states to 8040 states and 11044 transitions. [2018-10-24 18:29:40,046 INFO L78 Accepts]: Start accepts. Automaton has 8040 states and 11044 transitions. Word has length 245 [2018-10-24 18:29:40,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:40,047 INFO L481 AbstractCegarLoop]: Abstraction has 8040 states and 11044 transitions. [2018-10-24 18:29:40,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:29:40,047 INFO L276 IsEmpty]: Start isEmpty. Operand 8040 states and 11044 transitions. [2018-10-24 18:29:40,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-24 18:29:40,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:40,087 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:29:40,087 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:40,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:40,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1610952686, now seen corresponding path program 1 times [2018-10-24 18:29:40,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:40,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:40,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:40,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:40,089 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:40,603 WARN L179 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-24 18:29:40,940 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 18:29:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 40 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:29:41,213 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:29:41,213 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:29:41,214 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 311 with the following transitions: [2018-10-24 18:29:41,217 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [894], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:29:41,316 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:29:41,316 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:29:44,240 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:29:51,570 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:29:51,572 INFO L272 AbstractInterpreter]: Visited 175 different actions 175 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:29:51,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:51,623 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:29:55,131 INFO L232 lantSequenceWeakener]: Weakened 302 states. On average, predicates are now at 77.47% of their original sizes. [2018-10-24 18:29:55,131 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:29:55,665 INFO L413 sIntCurrentIteration]: We have 309 unified AI predicates [2018-10-24 18:29:55,666 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:29:55,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:29:55,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-24 18:29:55,667 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:55,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 18:29:55,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 18:29:55,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:29:55,668 INFO L87 Difference]: Start difference. First operand 8040 states and 11044 transitions. Second operand 8 states. [2018-10-24 18:30:17,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:30:17,480 INFO L93 Difference]: Finished difference Result 16259 states and 22312 transitions. [2018-10-24 18:30:17,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:30:17,481 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 310 [2018-10-24 18:30:17,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:30:17,531 INFO L225 Difference]: With dead ends: 16259 [2018-10-24 18:30:17,531 INFO L226 Difference]: Without dead ends: 8225 [2018-10-24 18:30:17,567 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 311 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:30:17,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8225 states. [2018-10-24 18:30:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8225 to 8223. [2018-10-24 18:30:17,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8223 states. [2018-10-24 18:30:17,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8223 states to 8223 states and 11235 transitions. [2018-10-24 18:30:17,781 INFO L78 Accepts]: Start accepts. Automaton has 8223 states and 11235 transitions. Word has length 310 [2018-10-24 18:30:17,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:30:17,781 INFO L481 AbstractCegarLoop]: Abstraction has 8223 states and 11235 transitions. [2018-10-24 18:30:17,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 18:30:17,782 INFO L276 IsEmpty]: Start isEmpty. Operand 8223 states and 11235 transitions. [2018-10-24 18:30:17,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-10-24 18:30:17,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:30:17,818 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:30:17,819 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:30:17,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:30:17,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1353528260, now seen corresponding path program 1 times [2018-10-24 18:30:17,819 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:30:17,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:30:17,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:30:17,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:30:17,821 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:30:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:30:18,474 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 18:30:18,692 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:30:19,205 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-24 18:30:19,758 WARN L179 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-24 18:30:20,380 WARN L179 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-10-24 18:30:21,024 WARN L179 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-24 18:30:21,234 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 18:30:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 148 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:30:21,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:30:21,886 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:30:21,886 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 396 with the following transitions: [2018-10-24 18:30:21,887 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [894], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:30:21,900 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:30:21,900 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:30:25,030 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:30:41,533 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:30:41,533 INFO L272 AbstractInterpreter]: Visited 179 different actions 351 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:30:41,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:30:41,541 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:30:45,362 INFO L232 lantSequenceWeakener]: Weakened 112 states. On average, predicates are now at 78.07% of their original sizes. [2018-10-24 18:30:45,362 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:31:20,971 INFO L413 sIntCurrentIteration]: We have 394 unified AI predicates [2018-10-24 18:31:20,972 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:31:20,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:31:20,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [12] total 31 [2018-10-24 18:31:20,972 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:31:20,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 18:31:20,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 18:31:20,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2018-10-24 18:31:20,974 INFO L87 Difference]: Start difference. First operand 8223 states and 11235 transitions. Second operand 21 states. Received shutdown request... [2018-10-24 18:32:59,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-24 18:32:59,395 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:32:59,400 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:32:59,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:32:59 BoogieIcfgContainer [2018-10-24 18:32:59,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:32:59,401 INFO L168 Benchmark]: Toolchain (without parser) took 222077.27 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 536.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:59,403 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 18:32:59,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 908.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:59,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 233.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:59,405 INFO L168 Benchmark]: Boogie Preprocessor took 116.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:59,406 INFO L168 Benchmark]: RCFGBuilder took 3721.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 131.8 MB). Peak memory consumption was 131.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:59,407 INFO L168 Benchmark]: TraceAbstraction took 217091.13 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 438.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:59,412 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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. * CACSL2BoogieTranslator took 908.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 233.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3721.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 131.8 MB). Peak memory consumption was 131.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217091.13 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 438.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 64). Cancelled while BasicCegarLoop was constructing difference of abstraction (8223states) and FLOYD_HOARE automaton (currently 24 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (668 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 217.0s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 135.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 928 SDtfs, 5219 SDslu, 675 SDs, 0 SdLazy, 8188 SolverSat, 1695 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 756 GetRequests, 654 SyntacticMatches, 44 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 38.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8223occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 30.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.996523697610654 AbsIntWeakeningRatio, 0.08250355618776671 AbsIntAvgWeakeningVarsNumRemoved, 645.4551920341394 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 153 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 1457 NumberOfCodeBlocks, 1457 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1449 ConstructedInterpolants, 0 QuantifiedInterpolants, 2766533 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 517/815 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown