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/Problem15_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:50:56,429 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:50:56,431 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:50:56,444 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:50:56,445 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:50:56,446 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:50:56,447 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:50:56,449 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:50:56,451 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:50:56,451 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:50:56,452 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:50:56,453 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:50:56,454 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:50:56,455 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:50:56,456 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:50:56,457 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:50:56,457 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:50:56,459 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:50:56,461 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:50:56,463 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:50:56,464 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:50:56,465 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:50:56,468 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:50:56,468 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:50:56,469 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:50:56,470 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:50:56,471 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:50:56,471 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:50:56,472 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:50:56,473 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:50:56,474 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:50:56,474 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:50:56,475 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:50:56,475 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:50:56,476 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:50:56,477 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:50:56,477 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:50:56,499 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:50:56,500 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:50:56,501 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:50:56,501 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:50:56,502 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:50:56,502 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:50:56,502 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:50:56,502 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:50:56,502 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:50:56,503 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:50:56,503 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:50:56,503 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:50:56,504 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:50:56,504 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:50:56,504 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:50:56,505 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:50:56,505 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:50:56,505 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:50:56,505 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:50:56,507 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:50:56,507 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:50:56,507 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:50:56,507 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:50:56,507 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:50:56,508 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:50:56,508 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:50:56,508 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:50:56,508 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:50:56,508 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:50:56,509 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:50:56,509 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:50:56,509 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:50:56,509 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:50:56,509 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:50:56,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:50:56,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:50:56,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:50:56,604 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:50:56,605 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:50:56,606 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label43_true-unreach-call.c [2018-10-24 21:50:56,663 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/58b8dcf3a/5ce70ea8c7774aa68e1e2fd80a9e7cb5/FLAG535524140 [2018-10-24 21:50:57,338 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:50:57,339 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label43_true-unreach-call.c [2018-10-24 21:50:57,365 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/58b8dcf3a/5ce70ea8c7774aa68e1e2fd80a9e7cb5/FLAG535524140 [2018-10-24 21:50:57,387 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/58b8dcf3a/5ce70ea8c7774aa68e1e2fd80a9e7cb5 [2018-10-24 21:50:57,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:50:57,404 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:50:57,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:50:57,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:50:57,410 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:50:57,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:50:57" (1/1) ... [2018-10-24 21:50:57,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:57, skipping insertion in model container [2018-10-24 21:50:57,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:50:57" (1/1) ... [2018-10-24 21:50:57,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:50:57,517 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:50:58,382 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:50:58,387 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:50:58,680 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:50:58,704 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:50:58,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:58 WrapperNode [2018-10-24 21:50:58,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:50:58,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:50:58,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:50:58,706 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:50:58,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:58" (1/1) ... [2018-10-24 21:50:58,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:58" (1/1) ... [2018-10-24 21:50:59,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:50:59,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:50:59,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:50:59,112 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:50:59,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:58" (1/1) ... [2018-10-24 21:50:59,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:58" (1/1) ... [2018-10-24 21:50:59,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:58" (1/1) ... [2018-10-24 21:50:59,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:58" (1/1) ... [2018-10-24 21:50:59,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:58" (1/1) ... [2018-10-24 21:50:59,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:58" (1/1) ... [2018-10-24 21:50:59,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:58" (1/1) ... [2018-10-24 21:50:59,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:50:59,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:50:59,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:50:59,359 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:50:59,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:50:59,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:50:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:50:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:50:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:50:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:50:59,435 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:50:59,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:50:59,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:50:59,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:50:59,437 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:51:06,256 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:51:06,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:51:06 BoogieIcfgContainer [2018-10-24 21:51:06,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:51:06,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:51:06,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:51:06,262 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:51:06,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:50:57" (1/3) ... [2018-10-24 21:51:06,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d97a823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:51:06, skipping insertion in model container [2018-10-24 21:51:06,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:50:58" (2/3) ... [2018-10-24 21:51:06,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d97a823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:51:06, skipping insertion in model container [2018-10-24 21:51:06,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:51:06" (3/3) ... [2018-10-24 21:51:06,266 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label43_true-unreach-call.c [2018-10-24 21:51:06,277 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:51:06,286 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:51:06,304 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:51:06,345 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:51:06,345 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:51:06,346 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:51:06,346 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:51:06,346 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:51:06,346 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:51:06,346 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:51:06,346 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:51:06,381 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 21:51:06,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-24 21:51:06,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:51:06,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:51:06,399 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:51:06,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:51:06,406 INFO L82 PathProgramCache]: Analyzing trace with hash 907062017, now seen corresponding path program 1 times [2018-10-24 21:51:06,408 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:51:06,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:51:06,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:51:06,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:51:06,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:51:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:51:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:51:07,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:51:07,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:51:07,042 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:51:07,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:51:07,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:51:07,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:51:07,070 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 21:51:15,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:51:15,293 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-24 21:51:15,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:51:15,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-10-24 21:51:15,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:51:15,334 INFO L225 Difference]: With dead ends: 1558 [2018-10-24 21:51:15,335 INFO L226 Difference]: Without dead ends: 1114 [2018-10-24 21:51:15,350 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 [2018-10-24 21:51:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-24 21:51:15,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-10-24 21:51:15,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-10-24 21:51:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-10-24 21:51:15,521 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 65 [2018-10-24 21:51:15,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:51:15,522 INFO L481 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-10-24 21:51:15,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:51:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-10-24 21:51:15,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-24 21:51:15,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:51:15,537 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, 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] [2018-10-24 21:51:15,537 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:51:15,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:51:15,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1501715637, now seen corresponding path program 1 times [2018-10-24 21:51:15,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:51:15,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:51:15,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:51:15,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:51:15,541 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:51:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:51:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:51:15,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:51:15,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:51:15,876 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:51:15,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:51:15,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:51:15,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:51:15,880 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-10-24 21:51:24,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:51:24,206 INFO L93 Difference]: Finished difference Result 2760 states and 5146 transitions. [2018-10-24 21:51:24,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:51:24,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2018-10-24 21:51:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:51:24,222 INFO L225 Difference]: With dead ends: 2760 [2018-10-24 21:51:24,222 INFO L226 Difference]: Without dead ends: 2007 [2018-10-24 21:51:24,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:51:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2018-10-24 21:51:24,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 2002. [2018-10-24 21:51:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2002 states. [2018-10-24 21:51:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 3249 transitions. [2018-10-24 21:51:24,302 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 3249 transitions. Word has length 135 [2018-10-24 21:51:24,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:51:24,302 INFO L481 AbstractCegarLoop]: Abstraction has 2002 states and 3249 transitions. [2018-10-24 21:51:24,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:51:24,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 3249 transitions. [2018-10-24 21:51:24,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-24 21:51:24,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:51:24,317 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, 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] [2018-10-24 21:51:24,317 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:51:24,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:51:24,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1679120985, now seen corresponding path program 1 times [2018-10-24 21:51:24,318 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:51:24,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:51:24,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:51:24,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:51:24,322 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:51:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:51:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:51:24,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:51:24,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:51:24,836 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:51:24,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:51:24,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:51:24,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:51:24,840 INFO L87 Difference]: Start difference. First operand 2002 states and 3249 transitions. Second operand 5 states. [2018-10-24 21:51:39,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:51:39,158 INFO L93 Difference]: Finished difference Result 6847 states and 11336 transitions. [2018-10-24 21:51:39,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:51:39,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2018-10-24 21:51:39,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:51:39,206 INFO L225 Difference]: With dead ends: 6847 [2018-10-24 21:51:39,206 INFO L226 Difference]: Without dead ends: 4851 [2018-10-24 21:51:39,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:51:39,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2018-10-24 21:51:39,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 4804. [2018-10-24 21:51:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4804 states. [2018-10-24 21:51:39,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 7182 transitions. [2018-10-24 21:51:39,404 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 7182 transitions. Word has length 216 [2018-10-24 21:51:39,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:51:39,405 INFO L481 AbstractCegarLoop]: Abstraction has 4804 states and 7182 transitions. [2018-10-24 21:51:39,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:51:39,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 7182 transitions. [2018-10-24 21:51:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-24 21:51:39,416 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:51:39,417 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:51:39,417 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:51:39,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:51:39,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1565078656, now seen corresponding path program 1 times [2018-10-24 21:51:39,418 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:51:39,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:51:39,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:51:39,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:51:39,419 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:51:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:51:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 116 proven. 79 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:51:39,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:51:39,752 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:51:39,753 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-10-24 21:51:39,754 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [493], [495], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [671], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:51:39,845 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:51:39,846 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:51:41,469 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:51:42,333 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:51:42,336 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:51:42,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:51:42,382 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:51:44,411 INFO L232 lantSequenceWeakener]: Weakened 232 states. On average, predicates are now at 78.28% of their original sizes. [2018-10-24 21:51:44,412 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:51:44,840 INFO L413 sIntCurrentIteration]: We have 239 unified AI predicates [2018-10-24 21:51:44,841 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:51:44,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:51:44,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:51:44,842 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:51:44,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:51:44,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:51:44,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:51:44,844 INFO L87 Difference]: Start difference. First operand 4804 states and 7182 transitions. Second operand 7 states. [2018-10-24 21:52:40,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:52:40,195 INFO L93 Difference]: Finished difference Result 9912 states and 14723 transitions. [2018-10-24 21:52:40,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:52:40,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2018-10-24 21:52:40,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:52:40,221 INFO L225 Difference]: With dead ends: 9912 [2018-10-24 21:52:40,221 INFO L226 Difference]: Without dead ends: 5114 [2018-10-24 21:52:40,245 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 240 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:52:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5114 states. [2018-10-24 21:52:40,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5114 to 5112. [2018-10-24 21:52:40,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5112 states. [2018-10-24 21:52:40,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5112 states to 5112 states and 7499 transitions. [2018-10-24 21:52:40,389 INFO L78 Accepts]: Start accepts. Automaton has 5112 states and 7499 transitions. Word has length 240 [2018-10-24 21:52:40,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:52:40,390 INFO L481 AbstractCegarLoop]: Abstraction has 5112 states and 7499 transitions. [2018-10-24 21:52:40,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:52:40,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5112 states and 7499 transitions. [2018-10-24 21:52:40,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-10-24 21:52:40,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:40,409 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:52:40,410 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:40,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:40,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1531914166, now seen corresponding path program 1 times [2018-10-24 21:52:40,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:40,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:40,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:40,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:40,414 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 180 proven. 242 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-24 21:52:40,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:52:40,823 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:52:40,823 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-10-24 21:52:40,824 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [493], [495], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [671], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:52:40,840 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:52:40,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:52:42,405 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:52:50,415 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:52:50,415 INFO L272 AbstractInterpreter]: Visited 105 different actions 302 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:52:50,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:50,424 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:52:54,253 INFO L232 lantSequenceWeakener]: Weakened 102 states. On average, predicates are now at 79.81% of their original sizes. [2018-10-24 21:52:54,253 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 21:54:55,892 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:54:55,896 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:54:55,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:54:55 BoogieIcfgContainer [2018-10-24 21:54:55,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:54:55,897 INFO L168 Benchmark]: Toolchain (without parser) took 238494.74 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -780.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 21:54:55,899 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:54:55,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1300.12 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:54:55,901 INFO L168 Benchmark]: Boogie Procedure Inliner took 404.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -875.0 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:54:55,902 INFO L168 Benchmark]: Boogie Preprocessor took 247.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:54:55,903 INFO L168 Benchmark]: RCFGBuilder took 6898.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 323.9 MB). Peak memory consumption was 323.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:54:55,903 INFO L168 Benchmark]: TraceAbstraction took 229638.37 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -348.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:54:55,908 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1300.12 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 404.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -875.0 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 247.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6898.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 323.9 MB). Peak memory consumption was 323.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229638.37 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -348.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 181]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 181). Cancelled while BasicCegarLoop was analyzing trace of length 337 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 229.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 86.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1009 SDtfs, 3364 SDslu, 792 SDs, 0 SdLazy, 7456 SolverSat, 1731 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 59.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 260 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5112occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9957424380144423 AbsIntWeakeningRatio, 0.10104529616724739 AbsIntAvgWeakeningVarsNumRemoved, 391.0365853658537 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 409 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 656 NumberOfCodeBlocks, 656 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 652 ConstructedInterpolants, 0 QuantifiedInterpolants, 382386 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 237/316 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown