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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:45:52,135 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:45:52,137 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:45:52,151 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:45:52,152 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:45:52,153 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:45:52,154 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:45:52,156 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:45:52,158 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:45:52,158 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:45:52,159 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:45:52,160 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:45:52,161 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:45:52,162 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:45:52,163 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:45:52,164 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:45:52,165 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:45:52,166 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:45:52,168 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:45:52,170 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:45:52,171 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:45:52,173 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:45:52,176 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:45:52,176 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:45:52,176 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:45:52,177 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:45:52,178 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:45:52,179 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:45:52,180 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:45:52,181 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:45:52,181 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:45:52,182 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:45:52,182 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:45:52,183 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:45:52,184 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:45:52,184 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:45:52,185 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:45:52,214 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:45:52,215 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:45:52,216 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:45:52,216 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:45:52,216 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:45:52,216 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:45:52,217 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:45:52,217 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:45:52,217 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:45:52,218 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:45:52,218 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:45:52,218 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:45:52,219 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:45:52,219 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:45:52,219 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:45:52,220 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:45:52,221 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:45:52,221 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:45:52,221 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:45:52,221 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:45:52,221 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:45:52,222 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:45:52,222 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:45:52,222 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:45:52,222 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:45:52,223 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:45:52,223 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:45:52,223 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:45:52,223 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:45:52,224 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:45:52,224 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:45:52,224 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:45:52,224 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:45:52,224 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:45:52,289 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:45:52,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:45:52,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:45:52,310 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:45:52,311 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:45:52,312 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label24_true-unreach-call.c [2018-10-27 14:45:52,379 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f35a9a8e/c04b4fa4c38d4e5191f78d104af5f2c6/FLAGa02c1e133 [2018-10-27 14:45:53,060 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:45:53,063 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label24_true-unreach-call.c [2018-10-27 14:45:53,093 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f35a9a8e/c04b4fa4c38d4e5191f78d104af5f2c6/FLAGa02c1e133 [2018-10-27 14:45:53,113 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f35a9a8e/c04b4fa4c38d4e5191f78d104af5f2c6 [2018-10-27 14:45:53,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:45:53,130 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:45:53,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:45:53,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:45:53,139 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:45:53,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:45:53" (1/1) ... [2018-10-27 14:45:53,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769766bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:53, skipping insertion in model container [2018-10-27 14:45:53,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:45:53" (1/1) ... [2018-10-27 14:45:53,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:45:53,264 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:45:53,997 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:45:54,002 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:45:54,261 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:45:54,284 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:45:54,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:54 WrapperNode [2018-10-27 14:45:54,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:45:54,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:45:54,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:45:54,286 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:45:54,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:54" (1/1) ... [2018-10-27 14:45:54,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:54" (1/1) ... [2018-10-27 14:45:54,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:45:54,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:45:54,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:45:54,605 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:45:54,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:54" (1/1) ... [2018-10-27 14:45:54,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:54" (1/1) ... [2018-10-27 14:45:54,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:54" (1/1) ... [2018-10-27 14:45:54,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:54" (1/1) ... [2018-10-27 14:45:54,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:54" (1/1) ... [2018-10-27 14:45:54,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:54" (1/1) ... [2018-10-27 14:45:54,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:54" (1/1) ... [2018-10-27 14:45:54,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:45:54,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:45:54,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:45:54,750 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:45:54,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:54" (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 [2018-10-27 14:45:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:45:54,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:45:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:45:54,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:45:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:45:54,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:45:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:45:54,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:45:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:45:54,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:46:00,334 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:46:00,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:46:00 BoogieIcfgContainer [2018-10-27 14:46:00,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:46:00,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:46:00,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:46:00,342 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:46:00,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:45:53" (1/3) ... [2018-10-27 14:46:00,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d3a9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:46:00, skipping insertion in model container [2018-10-27 14:46:00,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:45:54" (2/3) ... [2018-10-27 14:46:00,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d3a9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:46:00, skipping insertion in model container [2018-10-27 14:46:00,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:46:00" (3/3) ... [2018-10-27 14:46:00,346 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label24_true-unreach-call.c [2018-10-27 14:46:00,357 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:46:00,371 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:46:00,389 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:46:00,435 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:46:00,435 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:46:00,435 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:46:00,435 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:46:00,436 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:46:00,436 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:46:00,436 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:46:00,436 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:46:00,473 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 14:46:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-27 14:46:00,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:46:00,484 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] [2018-10-27 14:46:00,489 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:46:00,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:46:00,495 INFO L82 PathProgramCache]: Analyzing trace with hash -2128863117, now seen corresponding path program 1 times [2018-10-27 14:46:00,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:46:00,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:46:00,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:46:00,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:46:00,547 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:46:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:46:00,978 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:46:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:46:01,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:46:01,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 14:46:01,162 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:46:01,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 14:46:01,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 14:46:01,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:46:01,184 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 14:46:04,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:46:04,502 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 14:46:04,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 14:46:04,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-10-27 14:46:04,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:46:04,533 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 14:46:04,533 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 14:46:04,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:46:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 14:46:04,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 14:46:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 14:46:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-10-27 14:46:04,649 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 59 [2018-10-27 14:46:04,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:46:04,649 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-10-27 14:46:04,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 14:46:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-10-27 14:46:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-27 14:46:04,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:46:04,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:46:04,661 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:46:04,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:46:04,661 INFO L82 PathProgramCache]: Analyzing trace with hash -2051770448, now seen corresponding path program 1 times [2018-10-27 14:46:04,662 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:46:04,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:46:04,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:46:04,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:46:04,663 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:46:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:46:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:46:05,104 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:46:05,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:46:05,105 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:46:05,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:46:05,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:46:05,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:46:05,107 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-10-27 14:46:12,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:46:12,868 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-10-27 14:46:12,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:46:12,876 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-10-27 14:46:12,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:46:12,891 INFO L225 Difference]: With dead ends: 2183 [2018-10-27 14:46:12,891 INFO L226 Difference]: Without dead ends: 1445 [2018-10-27 14:46:12,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:46:12,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-10-27 14:46:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-10-27 14:46:12,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-10-27 14:46:12,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-10-27 14:46:12,993 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 167 [2018-10-27 14:46:12,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:46:12,994 INFO L481 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-10-27 14:46:12,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:46:12,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-10-27 14:46:12,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-27 14:46:12,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:46:12,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:46:12,999 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:46:12,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:46:12,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1876159715, now seen corresponding path program 1 times [2018-10-27 14:46:12,999 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:46:13,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:46:13,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:46:13,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:46:13,001 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:46:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:46:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:46:13,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:46:13,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:46:13,289 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:46:13,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:46:13,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:46:13,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:46:13,291 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-10-27 14:46:19,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:46:19,389 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-10-27 14:46:19,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:46:19,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-10-27 14:46:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:46:19,415 INFO L225 Difference]: With dead ends: 3902 [2018-10-27 14:46:19,415 INFO L226 Difference]: Without dead ends: 2484 [2018-10-27 14:46:19,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:46:19,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-10-27 14:46:19,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-10-27 14:46:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-10-27 14:46:19,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-10-27 14:46:19,491 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 170 [2018-10-27 14:46:19,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:46:19,491 INFO L481 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-10-27 14:46:19,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:46:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-10-27 14:46:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-27 14:46:19,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:46:19,498 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:46:19,498 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:46:19,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:46:19,499 INFO L82 PathProgramCache]: Analyzing trace with hash -170942544, now seen corresponding path program 1 times [2018-10-27 14:46:19,499 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:46:19,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:46:19,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:46:19,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:46:19,500 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:46:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:46:19,833 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:46:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 104 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 14:46:20,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:46:20,307 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:46:20,309 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 287 with the following transitions: [2018-10-27 14:46:20,311 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 14:46:20,390 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:46:20,390 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:46:21,041 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:46:21,043 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 14:46:21,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:46:21,090 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:46:21,818 INFO L227 lantSequenceWeakener]: Weakened 277 states. On average, predicates are now at 77.93% of their original sizes. [2018-10-27 14:46:21,819 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:46:22,158 INFO L415 sIntCurrentIteration]: We unified 285 AI predicates to 285 [2018-10-27 14:46:22,158 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:46:22,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:46:22,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 14:46:22,159 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:46:22,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 14:46:22,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 14:46:22,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 14:46:22,161 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 7 states. [2018-10-27 14:46:24,827 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