java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label29_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:12:28,280 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:12:28,282 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:12:28,294 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:12:28,295 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:12:28,296 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:12:28,297 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:12:28,299 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:12:28,301 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:12:28,302 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:12:28,303 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:12:28,303 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:12:28,304 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:12:28,309 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:12:28,310 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:12:28,312 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:12:28,313 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:12:28,318 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:12:28,322 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:12:28,324 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:12:28,328 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:12:28,329 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:12:28,331 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:12:28,333 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:12:28,334 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:12:28,335 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:12:28,336 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:12:28,337 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:12:28,340 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:12:28,342 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:12:28,342 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:12:28,344 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:12:28,345 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:12:28,345 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:12:28,346 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:12:28,347 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:12:28,348 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 21:12:28,379 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:12:28,379 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:12:28,380 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:12:28,380 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:12:28,380 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:12:28,380 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:12:28,381 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:12:28,383 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:12:28,383 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:12:28,383 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:12:28,384 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:12:28,384 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:12:28,384 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:12:28,385 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:12:28,385 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:12:28,385 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:12:28,385 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:12:28,387 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:12:28,387 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:12:28,387 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:12:28,388 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:12:28,388 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:12:28,388 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:12:28,388 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:12:28,388 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:12:28,389 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:12:28,389 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:12:28,389 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:12:28,389 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:12:28,390 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:12:28,390 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:12:28,390 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:12:28,390 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:12:28,390 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:12:28,391 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:12:28,451 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:12:28,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:12:28,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:12:28,473 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:12:28,473 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:12:28,474 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label29_true-unreach-call.c [2018-11-07 21:12:28,545 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43d5c1b44/a461ba2a876b4e43b88b32a625f60550/FLAGa7b73bb7d [2018-11-07 21:12:29,285 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:12:29,286 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label29_true-unreach-call.c [2018-11-07 21:12:29,318 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43d5c1b44/a461ba2a876b4e43b88b32a625f60550/FLAGa7b73bb7d [2018-11-07 21:12:29,340 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43d5c1b44/a461ba2a876b4e43b88b32a625f60550 [2018-11-07 21:12:29,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:12:29,355 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:12:29,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:12:29,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:12:29,362 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:12:29,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:12:29" (1/1) ... [2018-11-07 21:12:29,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f01134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:29, skipping insertion in model container [2018-11-07 21:12:29,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:12:29" (1/1) ... [2018-11-07 21:12:29,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:12:29,519 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:12:30,575 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:12:30,580 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:12:31,025 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:12:31,055 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:12:31,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:31 WrapperNode [2018-11-07 21:12:31,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:12:31,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:12:31,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:12:31,057 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:12:31,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:31" (1/1) ... [2018-11-07 21:12:31,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:31" (1/1) ... [2018-11-07 21:12:31,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:12:31,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:12:31,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:12:31,336 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:12:31,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:31" (1/1) ... [2018-11-07 21:12:31,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:31" (1/1) ... [2018-11-07 21:12:31,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:31" (1/1) ... [2018-11-07 21:12:31,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:31" (1/1) ... [2018-11-07 21:12:31,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:31" (1/1) ... [2018-11-07 21:12:31,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:31" (1/1) ... [2018-11-07 21:12:31,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:31" (1/1) ... [2018-11-07 21:12:31,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:12:31,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:12:31,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:12:31,588 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:12:31,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:12:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:12:31,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:12:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:12:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:12:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:12:31,661 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:12:31,661 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:12:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:12:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:12:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:12:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:12:31,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:12:31,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:12:41,387 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:12:41,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:12:41 BoogieIcfgContainer [2018-11-07 21:12:41,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:12:41,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:12:41,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:12:41,393 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:12:41,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:12:29" (1/3) ... [2018-11-07 21:12:41,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161ceead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:12:41, skipping insertion in model container [2018-11-07 21:12:41,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:31" (2/3) ... [2018-11-07 21:12:41,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161ceead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:12:41, skipping insertion in model container [2018-11-07 21:12:41,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:12:41" (3/3) ... [2018-11-07 21:12:41,396 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label29_true-unreach-call.c [2018-11-07 21:12:41,407 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:12:41,415 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:12:41,432 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:12:41,476 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:12:41,477 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:12:41,477 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:12:41,477 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:12:41,477 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:12:41,477 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:12:41,477 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:12:41,478 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:12:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 21:12:41,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-07 21:12:41,537 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:12:41,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:12:41,540 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:12:41,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:41,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1838383484, now seen corresponding path program 1 times [2018-11-07 21:12:41,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:12:41,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:41,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:12:41,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:41,603 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:12:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:12:42,005 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:12:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:12:42,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:12:42,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 21:12:42,133 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:42,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:12:42,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:12:42,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:12:42,173 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 21:12:48,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:12:48,894 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 21:12:48,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:12:48,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-11-07 21:12:48,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:12:48,930 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 21:12:48,930 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 21:12:48,941 INFO L604 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 [2018-11-07 21:12:48,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 21:12:49,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 21:12:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 21:12:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-07 21:12:49,119 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 46 [2018-11-07 21:12:49,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:12:49,120 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-07 21:12:49,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:12:49,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-07 21:12:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-07 21:12:49,128 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:12:49,128 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 21:12:49,128 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:12:49,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:49,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1709557070, now seen corresponding path program 1 times [2018-11-07 21:12:49,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:12:49,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:49,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:12:49,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:49,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:12:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:12:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:12:49,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:12:49,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:12:49,453 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:49,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:12:49,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:12:49,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:12:49,456 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 5 states. [2018-11-07 21:12:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:12:57,579 INFO L93 Difference]: Finished difference Result 3698 states and 6787 transitions. [2018-11-07 21:12:57,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:12:57,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2018-11-07 21:12:57,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:12:57,595 INFO L225 Difference]: With dead ends: 3698 [2018-11-07 21:12:57,595 INFO L226 Difference]: Without dead ends: 2230 [2018-11-07 21:12:57,600 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:12:57,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2018-11-07 21:12:57,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2209. [2018-11-07 21:12:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2018-11-07 21:12:57,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3833 transitions. [2018-11-07 21:12:57,685 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3833 transitions. Word has length 118 [2018-11-07 21:12:57,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:12:57,686 INFO L480 AbstractCegarLoop]: Abstraction has 2209 states and 3833 transitions. [2018-11-07 21:12:57,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:12:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3833 transitions. [2018-11-07 21:12:57,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 21:12:57,698 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:12:57,698 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 21:12:57,698 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:12:57,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:57,699 INFO L82 PathProgramCache]: Analyzing trace with hash -188742945, now seen corresponding path program 1 times [2018-11-07 21:12:57,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:12:57,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:57,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:12:57,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:57,703 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:12:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:12:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:12:58,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:12:58,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:12:58,005 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:58,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:12:58,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:12:58,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:12:58,007 INFO L87 Difference]: Start difference. First operand 2209 states and 3833 transitions. Second operand 6 states. [2018-11-07 21:13:05,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:13:05,188 INFO L93 Difference]: Finished difference Result 5866 states and 10122 transitions. [2018-11-07 21:13:05,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:13:05,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-11-07 21:13:05,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:13:05,212 INFO L225 Difference]: With dead ends: 5866 [2018-11-07 21:13:05,213 INFO L226 Difference]: Without dead ends: 3663 [2018-11-07 21:13:05,222 INFO L604 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 [2018-11-07 21:13:05,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2018-11-07 21:13:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3639. [2018-11-07 21:13:05,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2018-11-07 21:13:05,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5517 transitions. [2018-11-07 21:13:05,315 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5517 transitions. Word has length 141 [2018-11-07 21:13:05,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:13:05,315 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 5517 transitions. [2018-11-07 21:13:05,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:13:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5517 transitions. [2018-11-07 21:13:05,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 21:13:05,318 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:13:05,319 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1] [2018-11-07 21:13:05,319 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:13:05,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:05,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1463465367, now seen corresponding path program 1 times [2018-11-07 21:13:05,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:13:05,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:05,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:13:05,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:05,321 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:13:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:13:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:13:05,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:13:05,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:13:05,563 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:13:05,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:13:05,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:13:05,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:13:05,564 INFO L87 Difference]: Start difference. First operand 3639 states and 5517 transitions. Second operand 6 states. [2018-11-07 21:13:12,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:13:12,458 INFO L93 Difference]: Finished difference Result 8735 states and 13271 transitions. [2018-11-07 21:13:12,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:13:12,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-07 21:13:12,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:13:12,491 INFO L225 Difference]: With dead ends: 8735 [2018-11-07 21:13:12,491 INFO L226 Difference]: Without dead ends: 5102 [2018-11-07 21:13:12,504 INFO L604 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 [2018-11-07 21:13:12,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-11-07 21:13:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5084. [2018-11-07 21:13:12,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2018-11-07 21:13:12,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6940 transitions. [2018-11-07 21:13:12,624 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6940 transitions. Word has length 145 [2018-11-07 21:13:12,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:13:12,624 INFO L480 AbstractCegarLoop]: Abstraction has 5084 states and 6940 transitions. [2018-11-07 21:13:12,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:13:12,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6940 transitions. [2018-11-07 21:13:12,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 21:13:12,628 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:13:12,628 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:13:12,628 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:13:12,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:12,629 INFO L82 PathProgramCache]: Analyzing trace with hash 2101194106, now seen corresponding path program 1 times [2018-11-07 21:13:12,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:13:12,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:12,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:13:12,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:12,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:13:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:13:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:13:12,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:13:12,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:13:12,842 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:13:12,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:13:12,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:13:12,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:13:12,845 INFO L87 Difference]: Start difference. First operand 5084 states and 6940 transitions. Second operand 6 states. [2018-11-07 21:13:18,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:13:18,524 INFO L93 Difference]: Finished difference Result 13307 states and 18750 transitions. [2018-11-07 21:13:18,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:13:18,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-11-07 21:13:18,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:13:18,571 INFO L225 Difference]: With dead ends: 13307 [2018-11-07 21:13:18,571 INFO L226 Difference]: Without dead ends: 8229 [2018-11-07 21:13:18,584 INFO L604 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 [2018-11-07 21:13:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2018-11-07 21:13:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8128. [2018-11-07 21:13:18,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8128 states. [2018-11-07 21:13:18,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 10817 transitions. [2018-11-07 21:13:18,776 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 10817 transitions. Word has length 176 [2018-11-07 21:13:18,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:13:18,777 INFO L480 AbstractCegarLoop]: Abstraction has 8128 states and 10817 transitions. [2018-11-07 21:13:18,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:13:18,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 10817 transitions. [2018-11-07 21:13:18,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-07 21:13:18,783 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:13:18,784 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:13:18,784 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:13:18,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:18,784 INFO L82 PathProgramCache]: Analyzing trace with hash 241142769, now seen corresponding path program 1 times [2018-11-07 21:13:18,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:13:18,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:18,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:13:18,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:18,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:13:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:13:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:13:19,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:13:19,254 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:13:19,255 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-11-07 21:13:19,257 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1891], [1893], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:13:19,321 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:13:19,321 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:13:19,861 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:13:19,863 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 21:13:19,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:19,898 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:13:20,489 INFO L227 lantSequenceWeakener]: Weakened 200 states. On average, predicates are now at 77.89% of their original sizes. [2018-11-07 21:13:20,489 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:13:20,588 INFO L415 sIntCurrentIteration]: We unified 208 AI predicates to 208 [2018-11-07 21:13:20,588 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:13:20,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:13:20,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 21:13:20,592 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:13:20,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:13:20,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:13:20,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:13:20,594 INFO L87 Difference]: Start difference. First operand 8128 states and 10817 transitions. Second operand 7 states. [2018-11-07 21:13:30,182 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:13:57,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:13:57,880 INFO L93 Difference]: Finished difference Result 16955 states and 22499 transitions. [2018-11-07 21:13:57,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:13:57,880 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2018-11-07 21:13:57,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:13:57,910 INFO L225 Difference]: With dead ends: 16955 [2018-11-07 21:13:57,910 INFO L226 Difference]: Without dead ends: 8833 [2018-11-07 21:13:57,925 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 209 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:13:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8833 states. [2018-11-07 21:13:58,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8833 to 8831. [2018-11-07 21:13:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8831 states. [2018-11-07 21:13:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8831 states to 8831 states and 11532 transitions. [2018-11-07 21:13:58,124 INFO L78 Accepts]: Start accepts. Automaton has 8831 states and 11532 transitions. Word has length 209 [2018-11-07 21:13:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:13:58,124 INFO L480 AbstractCegarLoop]: Abstraction has 8831 states and 11532 transitions. [2018-11-07 21:13:58,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:13:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 8831 states and 11532 transitions. [2018-11-07 21:13:58,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-11-07 21:13:58,136 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:13:58,136 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:13:58,137 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:13:58,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:58,137 INFO L82 PathProgramCache]: Analyzing trace with hash 780174894, now seen corresponding path program 1 times [2018-11-07 21:13:58,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:13:58,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:58,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:13:58,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:58,140 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:13:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:13:58,791 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:13:59,838 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 176 proven. 171 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:13:59,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:13:59,838 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:13:59,839 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 397 with the following transitions: [2018-11-07 21:13:59,839 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1891], [1893], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:13:59,848 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:13:59,848 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:14:00,377 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:14:00,378 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:14:00,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:00,417 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:14:01,550 INFO L227 lantSequenceWeakener]: Weakened 53 states. On average, predicates are now at 77.44% of their original sizes. [2018-11-07 21:14:01,551 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:14:02,971 INFO L415 sIntCurrentIteration]: We unified 395 AI predicates to 395 [2018-11-07 21:14:02,971 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:14:02,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:14:02,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-07 21:14:02,972 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:14:02,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 21:14:02,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 21:14:02,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-11-07 21:14:02,973 INFO L87 Difference]: Start difference. First operand 8831 states and 11532 transitions. Second operand 16 states. [2018-11-07 21:14:30,598 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:15:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:15:12,282 INFO L93 Difference]: Finished difference Result 20145 states and 26332 transitions. [2018-11-07 21:15:12,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 21:15:12,283 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 396 [2018-11-07 21:15:12,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:15:12,317 INFO L225 Difference]: With dead ends: 20145 [2018-11-07 21:15:12,317 INFO L226 Difference]: Without dead ends: 12023 [2018-11-07 21:15:12,336 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 406 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2018-11-07 21:15:12,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12023 states. [2018-11-07 21:15:12,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12023 to 11786. [2018-11-07 21:15:12,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11786 states. [2018-11-07 21:15:12,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11786 states to 11786 states and 14526 transitions. [2018-11-07 21:15:12,564 INFO L78 Accepts]: Start accepts. Automaton has 11786 states and 14526 transitions. Word has length 396 [2018-11-07 21:15:12,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:15:12,565 INFO L480 AbstractCegarLoop]: Abstraction has 11786 states and 14526 transitions. [2018-11-07 21:15:12,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 21:15:12,565 INFO L276 IsEmpty]: Start isEmpty. Operand 11786 states and 14526 transitions. [2018-11-07 21:15:12,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2018-11-07 21:15:12,596 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:15:12,597 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:15:12,597 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:15:12,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:15:12,598 INFO L82 PathProgramCache]: Analyzing trace with hash -247744695, now seen corresponding path program 1 times [2018-11-07 21:15:12,598 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:15:12,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:15:12,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:15:12,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:15:12,600 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:15:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:15:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 123 proven. 214 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-07 21:15:13,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:15:13,698 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:15:13,698 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 738 with the following transitions: [2018-11-07 21:15:13,699 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1891], [1893], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:15:13,711 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:15:13,712 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:15:14,875 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:15:14,875 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:15:14,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:15:14,880 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:15:15,852 INFO L227 lantSequenceWeakener]: Weakened 301 states. On average, predicates are now at 77.91% of their original sizes. [2018-11-07 21:15:15,852 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:15:16,620 INFO L415 sIntCurrentIteration]: We unified 736 AI predicates to 736 [2018-11-07 21:15:16,620 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:15:16,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:15:16,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [6] total 35 [2018-11-07 21:15:16,621 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:15:16,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-07 21:15:16,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-07 21:15:16,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2018-11-07 21:15:16,623 INFO L87 Difference]: Start difference. First operand 11786 states and 14526 transitions. Second operand 31 states. [2018-11-07 21:16:05,266 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 21:16:05,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 21:16:05,687 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:16:05,694 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:16:05,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:16:05 BoogieIcfgContainer [2018-11-07 21:16:05,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:16:05,695 INFO L168 Benchmark]: Toolchain (without parser) took 216340.98 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 21:16:05,697 INFO L168 Benchmark]: CDTParser took 0.26 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. [2018-11-07 21:16:05,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1699.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:16:05,698 INFO L168 Benchmark]: Boogie Procedure Inliner took 278.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -950.8 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:16:05,699 INFO L168 Benchmark]: Boogie Preprocessor took 251.90 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:16:05,700 INFO L168 Benchmark]: RCFGBuilder took 9800.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 507.2 MB). Peak memory consumption was 507.2 MB. Max. memory is 7.1 GB. [2018-11-07 21:16:05,700 INFO L168 Benchmark]: TraceAbstraction took 204305.22 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 21:16:05,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1699.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 278.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -950.8 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 251.90 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9800.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 507.2 MB). Peak memory consumption was 507.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204305.22 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while BasicCegarLoop was constructing difference of abstraction (11786states) and FLOYD_HOARE automaton (currently 29 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (5178 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 204.2s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 190.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2279 SDtfs, 24474 SDslu, 1538 SDs, 0 SdLazy, 45972 SolverSat, 6256 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1419 GetRequests, 1301 SyntacticMatches, 6 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11786occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.4s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9978149822598958 AbsIntWeakeningRatio, 0.07318894697535475 AbsIntAvgWeakeningVarsNumRemoved, 12.281553398058252 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 403 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1968 NumberOfCodeBlocks, 1968 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1960 ConstructedInterpolants, 0 QuantifiedInterpolants, 3507175 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 558/1010 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown