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/Problem10_label26_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:28:46,389 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:28:46,391 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:28:46,410 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:28:46,411 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:28:46,412 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:28:46,413 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:28:46,415 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:28:46,417 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:28:46,418 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:28:46,418 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:28:46,419 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:28:46,420 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:28:46,421 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:28:46,422 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:28:46,424 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:28:46,425 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:28:46,429 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:28:46,434 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:28:46,436 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:28:46,440 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:28:46,441 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:28:46,444 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:28:46,445 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:28:46,445 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:28:46,446 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:28:46,447 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:28:46,448 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:28:46,448 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:28:46,449 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:28:46,449 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:28:46,450 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:28:46,450 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:28:46,451 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:28:46,451 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:28:46,452 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:28:46,452 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 [2018-10-26 23:28:46,471 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:28:46,472 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:28:46,472 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:28:46,473 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:28:46,473 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:28:46,473 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:28:46,473 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:28:46,473 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:28:46,474 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:28:46,474 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:28:46,474 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:28:46,474 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:28:46,475 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:28:46,475 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:28:46,475 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:28:46,475 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:28:46,476 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:28:46,476 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:28:46,476 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:28:46,476 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:28:46,476 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:28:46,477 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:28:46,477 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:28:46,477 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:28:46,477 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:28:46,477 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:28:46,478 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:28:46,478 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:28:46,478 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:28:46,478 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:28:46,478 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:28:46,479 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:28:46,479 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:28:46,479 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:28:46,525 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:28:46,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:28:46,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:28:46,542 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:28:46,542 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:28:46,543 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label26_false-unreach-call.c [2018-10-26 23:28:46,601 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3dcd118f2/75331ec3723c41d7be5ac766410f4af9/FLAG13e5232d9 [2018-10-26 23:28:47,223 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:28:47,223 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label26_false-unreach-call.c [2018-10-26 23:28:47,248 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3dcd118f2/75331ec3723c41d7be5ac766410f4af9/FLAG13e5232d9 [2018-10-26 23:28:47,272 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3dcd118f2/75331ec3723c41d7be5ac766410f4af9 [2018-10-26 23:28:47,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:28:47,288 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:28:47,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:28:47,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:28:47,293 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:28:47,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:28:47" (1/1) ... [2018-10-26 23:28:47,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e34a1a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:47, skipping insertion in model container [2018-10-26 23:28:47,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:28:47" (1/1) ... [2018-10-26 23:28:47,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:28:47,377 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:28:47,882 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:28:47,887 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:28:48,036 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:28:48,054 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:28:48,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:48 WrapperNode [2018-10-26 23:28:48,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:28:48,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:28:48,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:28:48,057 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:28:48,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:48" (1/1) ... [2018-10-26 23:28:48,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:48" (1/1) ... [2018-10-26 23:28:48,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:28:48,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:28:48,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:28:48,273 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:28:48,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:48" (1/1) ... [2018-10-26 23:28:48,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:48" (1/1) ... [2018-10-26 23:28:48,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:48" (1/1) ... [2018-10-26 23:28:48,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:48" (1/1) ... [2018-10-26 23:28:48,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:48" (1/1) ... [2018-10-26 23:28:48,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:48" (1/1) ... [2018-10-26 23:28:48,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:48" (1/1) ... [2018-10-26 23:28:48,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:28:48,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:28:48,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:28:48,378 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:28:48,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:48" (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 [2018-10-26 23:28:48,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:28:48,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:28:48,456 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:28:48,457 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:28:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:28:48,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:28:48,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:28:48,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:28:51,517 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:28:51,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:28:51 BoogieIcfgContainer [2018-10-26 23:28:51,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:28:51,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:28:51,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:28:51,523 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:28:51,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:28:47" (1/3) ... [2018-10-26 23:28:51,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a413d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:28:51, skipping insertion in model container [2018-10-26 23:28:51,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:28:48" (2/3) ... [2018-10-26 23:28:51,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a413d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:28:51, skipping insertion in model container [2018-10-26 23:28:51,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:28:51" (3/3) ... [2018-10-26 23:28:51,528 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label26_false-unreach-call.c [2018-10-26 23:28:51,536 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:28:51,545 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:28:51,563 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:28:51,604 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:28:51,605 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:28:51,605 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:28:51,606 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:28:51,606 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:28:51,606 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:28:51,606 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:28:51,606 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:28:51,636 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-26 23:28:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 23:28:51,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:28:51,646 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] [2018-10-26 23:28:51,650 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:28:51,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:28:51,659 INFO L82 PathProgramCache]: Analyzing trace with hash 937477233, now seen corresponding path program 1 times [2018-10-26 23:28:51,662 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:28:51,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:28:51,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:28:51,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:28:51,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:28:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:28:52,105 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-26 23:28:52,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:28:52,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:28:52,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:28:52,118 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:28:52,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:28:52,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:28:52,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:28:52,145 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-26 23:28:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:28:55,171 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-26 23:28:55,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:28:55,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-26 23:28:55,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:28:55,195 INFO L225 Difference]: With dead ends: 737 [2018-10-26 23:28:55,196 INFO L226 Difference]: Without dead ends: 515 [2018-10-26 23:28:55,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:28:55,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-26 23:28:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2018-10-26 23:28:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-10-26 23:28:55,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 848 transitions. [2018-10-26 23:28:55,298 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 848 transitions. Word has length 23 [2018-10-26 23:28:55,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:28:55,299 INFO L481 AbstractCegarLoop]: Abstraction has 515 states and 848 transitions. [2018-10-26 23:28:55,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:28:55,299 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 848 transitions. [2018-10-26 23:28:55,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-26 23:28:55,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:28:55,305 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:28:55,306 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:28:55,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:28:55,306 INFO L82 PathProgramCache]: Analyzing trace with hash 190361739, now seen corresponding path program 1 times [2018-10-26 23:28:55,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:28:55,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:28:55,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:28:55,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:28:55,308 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:28:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:28:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:28:55,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:28:55,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:28:55,726 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:28:55,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:28:55,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:28:55,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:28:55,729 INFO L87 Difference]: Start difference. First operand 515 states and 848 transitions. Second operand 6 states. [2018-10-26 23:28:58,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:28:58,546 INFO L93 Difference]: Finished difference Result 1863 states and 3251 transitions. [2018-10-26 23:28:58,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:28:58,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-10-26 23:28:58,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:28:58,568 INFO L225 Difference]: With dead ends: 1863 [2018-10-26 23:28:58,568 INFO L226 Difference]: Without dead ends: 1354 [2018-10-26 23:28:58,579 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 [2018-10-26 23:28:58,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-10-26 23:28:58,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1331. [2018-10-26 23:28:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2018-10-26 23:28:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2051 transitions. [2018-10-26 23:28:58,695 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2051 transitions. Word has length 98 [2018-10-26 23:28:58,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:28:58,696 INFO L481 AbstractCegarLoop]: Abstraction has 1331 states and 2051 transitions. [2018-10-26 23:28:58,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:28:58,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2051 transitions. [2018-10-26 23:28:58,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-26 23:28:58,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:28:58,708 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1] [2018-10-26 23:28:58,708 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:28:58,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:28:58,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1323817903, now seen corresponding path program 1 times [2018-10-26 23:28:58,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:28:58,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:28:58,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:28:58,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:28:58,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:28:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:28:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:28:59,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:28:59,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:28:59,041 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:28:59,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:28:59,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:28:59,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:28:59,043 INFO L87 Difference]: Start difference. First operand 1331 states and 2051 transitions. Second operand 6 states. [2018-10-26 23:29:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:29:03,029 INFO L93 Difference]: Finished difference Result 3507 states and 5683 transitions. [2018-10-26 23:29:03,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:29:03,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-10-26 23:29:03,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:29:03,058 INFO L225 Difference]: With dead ends: 3507 [2018-10-26 23:29:03,059 INFO L226 Difference]: Without dead ends: 2182 [2018-10-26 23:29:03,073 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 [2018-10-26 23:29:03,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2018-10-26 23:29:03,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 2160. [2018-10-26 23:29:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2160 states. [2018-10-26 23:29:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 3172 transitions. [2018-10-26 23:29:03,147 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 3172 transitions. Word has length 100 [2018-10-26 23:29:03,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:29:03,148 INFO L481 AbstractCegarLoop]: Abstraction has 2160 states and 3172 transitions. [2018-10-26 23:29:03,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:29:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 3172 transitions. [2018-10-26 23:29:03,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-26 23:29:03,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:29:03,151 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2018-10-26 23:29:03,151 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:29:03,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:29:03,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1557164548, now seen corresponding path program 1 times [2018-10-26 23:29:03,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:29:03,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:03,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:29:03,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:03,154 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:29:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:29:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:29:03,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:29:03,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:29:03,275 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:29:03,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:29:03,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:29:03,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:29:03,277 INFO L87 Difference]: Start difference. First operand 2160 states and 3172 transitions. Second operand 4 states. [2018-10-26 23:29:04,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:29:04,658 INFO L93 Difference]: Finished difference Result 7295 states and 11297 transitions. [2018-10-26 23:29:04,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:29:04,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2018-10-26 23:29:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:29:04,684 INFO L225 Difference]: With dead ends: 7295 [2018-10-26 23:29:04,684 INFO L226 Difference]: Without dead ends: 3195 [2018-10-26 23:29:04,720 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 [2018-10-26 23:29:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2018-10-26 23:29:04,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3193. [2018-10-26 23:29:04,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3193 states. [2018-10-26 23:29:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3193 states to 3193 states and 4458 transitions. [2018-10-26 23:29:04,829 INFO L78 Accepts]: Start accepts. Automaton has 3193 states and 4458 transitions. Word has length 103 [2018-10-26 23:29:04,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:29:04,830 INFO L481 AbstractCegarLoop]: Abstraction has 3193 states and 4458 transitions. [2018-10-26 23:29:04,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:29:04,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3193 states and 4458 transitions. [2018-10-26 23:29:04,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-26 23:29:04,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:29:04,835 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 23:29:04,835 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:29:04,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:29:04,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1720605675, now seen corresponding path program 1 times [2018-10-26 23:29:04,835 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:29:04,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:04,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:29:04,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:04,837 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:29:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:29:05,150 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:29:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:29:05,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:29:05,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:29:05,557 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:29:05,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:29:05,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:29:05,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:29:05,558 INFO L87 Difference]: Start difference. First operand 3193 states and 4458 transitions. Second operand 6 states. [2018-10-26 23:29:08,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:29:08,775 INFO L93 Difference]: Finished difference Result 7179 states and 10424 transitions. [2018-10-26 23:29:08,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:29:08,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-26 23:29:08,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:29:08,810 INFO L225 Difference]: With dead ends: 7179 [2018-10-26 23:29:08,810 INFO L226 Difference]: Without dead ends: 3992 [2018-10-26 23:29:08,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:29:08,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2018-10-26 23:29:08,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 3939. [2018-10-26 23:29:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3939 states. [2018-10-26 23:29:08,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5317 transitions. [2018-10-26 23:29:08,966 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5317 transitions. Word has length 146 [2018-10-26 23:29:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:29:08,967 INFO L481 AbstractCegarLoop]: Abstraction has 3939 states and 5317 transitions. [2018-10-26 23:29:08,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:29:08,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5317 transitions. [2018-10-26 23:29:08,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-10-26 23:29:08,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:29:08,995 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 23:29:08,995 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:29:08,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:29:08,996 INFO L82 PathProgramCache]: Analyzing trace with hash -631018936, now seen corresponding path program 1 times [2018-10-26 23:29:08,996 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:29:08,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:08,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:29:09,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:29:09,000 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:29:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:29:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 112 proven. 76 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-10-26 23:29:09,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:29:09,676 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:29:09,677 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 336 with the following transitions: [2018-10-26 23:29:09,679 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [98], [106], [114], [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], [506], [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], [667], [671], [675], [678], [679], [683], [687], [691], [695], [699], [703], [706], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-26 23:29:09,755 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:29:09,755 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:29:13,847 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:29:35,109 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:29:35,110 INFO L272 AbstractInterpreter]: Visited 132 different actions 644 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-26 23:29:35,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:29:35,124 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:29:38,897 INFO L227 lantSequenceWeakener]: Weakened 43 states. On average, predicates are now at 74.74% of their original sizes. [2018-10-26 23:29:38,898 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:29:50,810 INFO L415 sIntCurrentIteration]: We unified 334 AI predicates to 334 [2018-10-26 23:29:50,811 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:29:50,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:29:50,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [8] total 29 [2018-10-26 23:29:50,812 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:29:50,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-26 23:29:50,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-26 23:29:50,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2018-10-26 23:29:50,814 INFO L87 Difference]: Start difference. First operand 3939 states and 5317 transitions. Second operand 23 states. Received shutdown request... [2018-10-26 23:32:42,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-26 23:32:42,979 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:32:42,985 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:32:42,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:32:42 BoogieIcfgContainer [2018-10-26 23:32:42,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:32:42,986 INFO L168 Benchmark]: Toolchain (without parser) took 235699.20 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 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-26 23:32:42,987 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. [2018-10-26 23:32:42,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.39 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-26 23:32:42,989 INFO L168 Benchmark]: Boogie Procedure Inliner took 215.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-26 23:32:42,990 INFO L168 Benchmark]: Boogie Preprocessor took 104.71 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 23:32:42,990 INFO L168 Benchmark]: RCFGBuilder took 3141.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 130.3 MB). Peak memory consumption was 130.3 MB. Max. memory is 7.1 GB. [2018-10-26 23:32:42,991 INFO L168 Benchmark]: TraceAbstraction took 231465.35 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -898.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-26 23:32:42,997 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 767.39 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 215.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.71 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3141.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 130.3 MB). Peak memory consumption was 130.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231465.35 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.9 GB in the end (delta: -898.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 52). Cancelled while BasicCegarLoop was constructing difference of abstraction (3939states) and FLOYD_HOARE automaton (currently 32 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (9078 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 231.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 186.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 588 SDtfs, 4802 SDslu, 587 SDs, 0 SdLazy, 6458 SolverSat, 1422 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 390 GetRequests, 322 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 17.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3939occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 25.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9957042436865401 AbsIntWeakeningRatio, 0.09580838323353294 AbsIntAvgWeakeningVarsNumRemoved, 790.248502994012 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 100 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 805 NumberOfCodeBlocks, 805 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 799 ConstructedInterpolants, 0 QuantifiedInterpolants, 915454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 298/374 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown