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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:32:47,271 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:32:47,274 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:32:47,291 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:32:47,291 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:32:47,293 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:32:47,294 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:32:47,297 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:32:47,299 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:32:47,307 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:32:47,308 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:32:47,308 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:32:47,311 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:32:47,314 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:32:47,316 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:32:47,317 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:32:47,319 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:32:47,320 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:32:47,324 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:32:47,325 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:32:47,329 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:32:47,330 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:32:47,334 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:32:47,334 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:32:47,334 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:32:47,335 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:32:47,337 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:32:47,339 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:32:47,339 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:32:47,342 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:32:47,342 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:32:47,344 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:32:47,344 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:32:47,345 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:32:47,346 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:32:47,346 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:32:47,347 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.epf [2018-11-07 14:32:47,370 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:32:47,370 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:32:47,371 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:32:47,371 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:32:47,371 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:32:47,371 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:32:47,372 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:32:47,372 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:32:47,372 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:32:47,372 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:32:47,372 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:32:47,372 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:32:47,373 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:32:47,373 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:32:47,373 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:32:47,374 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:32:47,374 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:32:47,374 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:32:47,374 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:32:47,374 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:32:47,375 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:32:47,375 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:32:47,375 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:32:47,375 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:32:47,375 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:32:47,376 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:32:47,376 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:32:47,376 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:32:47,376 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:32:47,376 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:32:47,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:32:47,377 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:32:47,377 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:32:47,377 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:32:47,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:32:47,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:32:47,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:32:47,436 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:32:47,436 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:32:47,437 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label47_true-unreach-call.c [2018-11-07 14:32:47,493 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5431e8e5c/44f39f01283a43a4a0fedc1535899749/FLAGdf16ca63e [2018-11-07 14:32:48,083 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:32:48,084 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label47_true-unreach-call.c [2018-11-07 14:32:48,102 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5431e8e5c/44f39f01283a43a4a0fedc1535899749/FLAGdf16ca63e [2018-11-07 14:32:48,119 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5431e8e5c/44f39f01283a43a4a0fedc1535899749 [2018-11-07 14:32:48,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:32:48,133 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:32:48,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:32:48,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:32:48,140 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:32:48,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:32:48" (1/1) ... [2018-11-07 14:32:48,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4aa92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:48, skipping insertion in model container [2018-11-07 14:32:48,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:32:48" (1/1) ... [2018-11-07 14:32:48,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:32:48,225 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:32:48,871 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:32:48,876 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:32:49,153 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:32:49,175 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:32:49,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:49 WrapperNode [2018-11-07 14:32:49,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:32:49,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:32:49,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:32:49,177 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:32:49,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:49" (1/1) ... [2018-11-07 14:32:49,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:49" (1/1) ... [2018-11-07 14:32:49,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:32:49,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:32:49,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:32:49,356 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:32:49,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:49" (1/1) ... [2018-11-07 14:32:49,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:49" (1/1) ... [2018-11-07 14:32:49,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:49" (1/1) ... [2018-11-07 14:32:49,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:49" (1/1) ... [2018-11-07 14:32:49,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:49" (1/1) ... [2018-11-07 14:32:49,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:49" (1/1) ... [2018-11-07 14:32:49,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:49" (1/1) ... [2018-11-07 14:32:49,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:32:49,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:32:49,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:32:49,477 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:32:49,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:49" (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 14:32:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:32:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:32:49,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:32:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:32:49,542 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:32:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:32:49,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:32:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:32:49,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:32:54,029 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:32:54,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:32:54 BoogieIcfgContainer [2018-11-07 14:32:54,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:32:54,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:32:54,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:32:54,036 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:32:54,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:32:48" (1/3) ... [2018-11-07 14:32:54,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77362306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:32:54, skipping insertion in model container [2018-11-07 14:32:54,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:49" (2/3) ... [2018-11-07 14:32:54,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77362306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:32:54, skipping insertion in model container [2018-11-07 14:32:54,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:32:54" (3/3) ... [2018-11-07 14:32:54,041 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label47_true-unreach-call.c [2018-11-07 14:32:54,052 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:32:54,061 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:32:54,083 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:32:54,130 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:32:54,131 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:32:54,131 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:32:54,131 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:32:54,131 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:32:54,131 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:32:54,131 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:32:54,132 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:32:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 14:32:54,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-07 14:32:54,176 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:32:54,177 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] [2018-11-07 14:32:54,180 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:32:54,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:32:54,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1591725132, now seen corresponding path program 1 times [2018-11-07 14:32:54,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:32:54,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:54,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:32:54,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:54,241 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:32:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:32:54,724 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 14:32:54,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:32:54,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:32:54,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:32:54,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:32:54,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:32:54,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:32:54,755 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 14:32:57,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:32:57,161 INFO L93 Difference]: Finished difference Result 790 states and 1382 transitions. [2018-11-07 14:32:57,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:32:57,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2018-11-07 14:32:57,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:32:57,184 INFO L225 Difference]: With dead ends: 790 [2018-11-07 14:32:57,184 INFO L226 Difference]: Without dead ends: 495 [2018-11-07 14:32:57,192 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 14:32:57,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-11-07 14:32:57,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 488. [2018-11-07 14:32:57,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-11-07 14:32:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 849 transitions. [2018-11-07 14:32:57,276 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 849 transitions. Word has length 42 [2018-11-07 14:32:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:32:57,277 INFO L480 AbstractCegarLoop]: Abstraction has 488 states and 849 transitions. [2018-11-07 14:32:57,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:32:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 849 transitions. [2018-11-07 14:32:57,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-07 14:32:57,284 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:32:57,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:32:57,285 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:32:57,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:32:57,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1369215340, now seen corresponding path program 1 times [2018-11-07 14:32:57,286 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:32:57,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:57,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:32:57,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:57,288 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:32:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:32:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:32:57,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:32:57,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:32:57,615 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:32:57,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:32:57,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:32:57,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:32:57,618 INFO L87 Difference]: Start difference. First operand 488 states and 849 transitions. Second operand 5 states. [2018-11-07 14:33:02,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:33:02,049 INFO L93 Difference]: Finished difference Result 1731 states and 3162 transitions. [2018-11-07 14:33:02,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:33:02,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2018-11-07 14:33:02,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:33:02,061 INFO L225 Difference]: With dead ends: 1731 [2018-11-07 14:33:02,062 INFO L226 Difference]: Without dead ends: 1249 [2018-11-07 14:33:02,068 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:33:02,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2018-11-07 14:33:02,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1032. [2018-11-07 14:33:02,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2018-11-07 14:33:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1658 transitions. [2018-11-07 14:33:02,130 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1658 transitions. Word has length 118 [2018-11-07 14:33:02,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:33:02,131 INFO L480 AbstractCegarLoop]: Abstraction has 1032 states and 1658 transitions. [2018-11-07 14:33:02,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:33:02,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1658 transitions. [2018-11-07 14:33:02,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 14:33:02,136 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:33:02,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:02,137 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:33:02,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:33:02,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1411728153, now seen corresponding path program 1 times [2018-11-07 14:33:02,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:33:02,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:33:02,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:33:02,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:33:02,139 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:33:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:33:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:33:02,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:33:02,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:33:02,295 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:33:02,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:33:02,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:33:02,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:33:02,297 INFO L87 Difference]: Start difference. First operand 1032 states and 1658 transitions. Second operand 5 states. [2018-11-07 14:33:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:33:06,676 INFO L93 Difference]: Finished difference Result 3664 states and 6086 transitions. [2018-11-07 14:33:06,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:33:06,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-11-07 14:33:06,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:33:06,704 INFO L225 Difference]: With dead ends: 3664 [2018-11-07 14:33:06,705 INFO L226 Difference]: Without dead ends: 2638 [2018-11-07 14:33:06,715 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:33:06,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2018-11-07 14:33:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2605. [2018-11-07 14:33:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2605 states. [2018-11-07 14:33:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3729 transitions. [2018-11-07 14:33:06,805 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3729 transitions. Word has length 129 [2018-11-07 14:33:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:33:06,805 INFO L480 AbstractCegarLoop]: Abstraction has 2605 states and 3729 transitions. [2018-11-07 14:33:06,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:33:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3729 transitions. [2018-11-07 14:33:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 14:33:06,812 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:33:06,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:33:06,812 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:33:06,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:33:06,813 INFO L82 PathProgramCache]: Analyzing trace with hash 713476527, now seen corresponding path program 1 times [2018-11-07 14:33:06,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:33:06,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:33:06,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:33:06,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:33:06,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:33:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:33:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:33:07,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:33:07,539 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:33:07,540 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-11-07 14:33:07,542 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:33:07,595 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:33:07,595 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:33:08,308 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:33:09,676 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 14:33:09,678 INFO L272 AbstractInterpreter]: Visited 140 different actions 406 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 14:33:09,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:33:09,716 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 14:33:09,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:33:09,716 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 14:33:09,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:33:09,730 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 14:33:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:33:09,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 14:33:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:33:10,037 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 14:33:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:33:10,580 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:33:10,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-11-07 14:33:10,581 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:33:10,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:33:10,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:33:10,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:33:10,584 INFO L87 Difference]: Start difference. First operand 2605 states and 3729 transitions. Second operand 3 states. [2018-11-07 14:33:13,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:33:13,135 INFO L93 Difference]: Finished difference Result 6000 states and 8830 transitions. [2018-11-07 14:33:13,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:33:13,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2018-11-07 14:33:13,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:33:13,159 INFO L225 Difference]: With dead ends: 6000 [2018-11-07 14:33:13,159 INFO L226 Difference]: Without dead ends: 3401 [2018-11-07 14:33:13,173 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 348 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:33:13,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2018-11-07 14:33:13,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3205. [2018-11-07 14:33:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3205 states. [2018-11-07 14:33:13,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3205 states to 3205 states and 4557 transitions. [2018-11-07 14:33:13,260 INFO L78 Accepts]: Start accepts. Automaton has 3205 states and 4557 transitions. Word has length 174 [2018-11-07 14:33:13,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:33:13,261 INFO L480 AbstractCegarLoop]: Abstraction has 3205 states and 4557 transitions. [2018-11-07 14:33:13,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:33:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3205 states and 4557 transitions. [2018-11-07 14:33:13,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-11-07 14:33:13,266 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:33:13,267 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:33:13,267 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:33:13,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:33:13,268 INFO L82 PathProgramCache]: Analyzing trace with hash -910630669, now seen corresponding path program 1 times [2018-11-07 14:33:13,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:33:13,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:33:13,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:33:13,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:33:13,269 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:33:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:33:13,563 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:33:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 70 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:33:13,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:33:13,965 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:33:13,965 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-11-07 14:33:13,966 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:33:13,970 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:33:13,970 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:33:14,098 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:33:14,098 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 14:33:14,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:33:14,136 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:33:14,570 INFO L227 lantSequenceWeakener]: Weakened 190 states. On average, predicates are now at 73.41% of their original sizes. [2018-11-07 14:33:14,570 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:33:14,925 INFO L415 sIntCurrentIteration]: We unified 198 AI predicates to 198 [2018-11-07 14:33:14,925 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:33:14,926 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:33:14,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 14:33:14,927 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:33:14,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:33:14,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:33:14,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:33:14,928 INFO L87 Difference]: Start difference. First operand 3205 states and 4557 transitions. Second operand 7 states. [2018-11-07 14:33:17,144 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown