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/Problem17_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:53:48,316 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:53:48,318 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:53:48,333 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:53:48,333 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:53:48,335 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:53:48,336 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:53:48,337 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:53:48,339 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:53:48,340 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:53:48,341 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:53:48,341 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:53:48,342 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:53:48,343 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:53:48,344 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:53:48,345 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:53:48,346 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:53:48,348 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:53:48,350 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:53:48,351 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:53:48,353 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:53:48,354 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:53:48,356 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:53:48,356 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:53:48,357 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:53:48,358 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:53:48,359 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:53:48,359 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:53:48,360 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:53:48,361 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:53:48,362 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:53:48,362 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:53:48,363 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:53:48,365 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:53:48,366 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:53:48,366 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:53:48,367 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 11:53:48,395 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:53:48,396 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:53:48,398 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:53:48,398 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:53:48,399 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:53:48,402 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:53:48,402 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:53:48,402 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:53:48,402 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:53:48,403 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:53:48,403 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:53:48,403 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:53:48,405 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:53:48,406 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:53:48,406 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:53:48,406 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:53:48,406 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:53:48,406 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:53:48,407 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:53:48,407 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:53:48,407 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:53:48,407 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:53:48,407 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:53:48,408 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:53:48,409 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:53:48,409 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:53:48,409 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:53:48,409 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:53:48,410 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:53:48,410 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:53:48,410 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:53:48,410 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:53:48,410 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:53:48,411 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:53:48,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:53:48,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:53:48,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:53:48,483 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:53:48,483 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:53:48,484 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label30_false-unreach-call.c [2018-10-27 11:53:48,552 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/194df7585/260dbd297e2b4cee80dde4c0e0341b99/FLAGb3047dbd8 [2018-10-27 11:53:49,274 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:53:49,275 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label30_false-unreach-call.c [2018-10-27 11:53:49,300 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/194df7585/260dbd297e2b4cee80dde4c0e0341b99/FLAGb3047dbd8 [2018-10-27 11:53:49,316 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/194df7585/260dbd297e2b4cee80dde4c0e0341b99 [2018-10-27 11:53:49,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:53:49,331 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:53:49,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:53:49,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:53:49,339 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:53:49,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:53:49" (1/1) ... [2018-10-27 11:53:49,343 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 27.10 11:53:49, skipping insertion in model container [2018-10-27 11:53:49,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:53:49" (1/1) ... [2018-10-27 11:53:49,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:53:49,488 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:53:50,391 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:53:50,395 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:53:50,831 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:53:50,854 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:53:50,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:50 WrapperNode [2018-10-27 11:53:50,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:53:50,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:53:50,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:53:50,856 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:53:50,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:50" (1/1) ... [2018-10-27 11:53:50,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:50" (1/1) ... [2018-10-27 11:53:51,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:53:51,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:53:51,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:53:51,353 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:53:51,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:50" (1/1) ... [2018-10-27 11:53:51,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:50" (1/1) ... [2018-10-27 11:53:51,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:50" (1/1) ... [2018-10-27 11:53:51,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:50" (1/1) ... [2018-10-27 11:53:51,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:50" (1/1) ... [2018-10-27 11:53:51,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:50" (1/1) ... [2018-10-27 11:53:51,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:50" (1/1) ... [2018-10-27 11:53:51,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:53:51,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:53:51,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:53:51,664 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:53:51,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:50" (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 11:53:51,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:53:51,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:53:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 11:53:51,738 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 11:53:51,738 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:53:51,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:53:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:53:51,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:53:51,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:53:51,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:54:05,042 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:54:05,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:54:05 BoogieIcfgContainer [2018-10-27 11:54:05,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:54:05,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:54:05,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:54:05,048 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:54:05,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:53:49" (1/3) ... [2018-10-27 11:54:05,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3a4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:54:05, skipping insertion in model container [2018-10-27 11:54:05,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:53:50" (2/3) ... [2018-10-27 11:54:05,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3a4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:54:05, skipping insertion in model container [2018-10-27 11:54:05,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:54:05" (3/3) ... [2018-10-27 11:54:05,052 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label30_false-unreach-call.c [2018-10-27 11:54:05,062 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:54:05,072 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:54:05,090 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:54:05,133 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:54:05,133 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:54:05,134 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:54:05,134 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:54:05,134 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:54:05,134 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:54:05,134 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:54:05,135 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:54:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 11:54:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-27 11:54:05,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:54:05,181 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] [2018-10-27 11:54:05,183 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:54:05,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:54:05,189 INFO L82 PathProgramCache]: Analyzing trace with hash 2090317142, now seen corresponding path program 1 times [2018-10-27 11:54:05,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:54:05,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:54:05,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:54:05,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:54:05,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:54:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:54:05,718 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 11:54:05,732 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 11:54:05,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:54:05,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:54:05,735 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:54:05,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:54:05,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:54:05,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:54:05,763 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 11:54:18,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:54:18,293 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-10-27 11:54:18,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:54:18,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-10-27 11:54:18,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:54:18,329 INFO L225 Difference]: With dead ends: 2162 [2018-10-27 11:54:18,329 INFO L226 Difference]: Without dead ends: 1552 [2018-10-27 11:54:18,342 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 [2018-10-27 11:54:18,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-10-27 11:54:18,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-10-27 11:54:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-10-27 11:54:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-10-27 11:54:18,505 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 31 [2018-10-27 11:54:18,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:54:18,506 INFO L481 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-10-27 11:54:18,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:54:18,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-10-27 11:54:18,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-27 11:54:18,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:54:18,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:18,514 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:54:18,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:54:18,515 INFO L82 PathProgramCache]: Analyzing trace with hash -683023063, now seen corresponding path program 1 times [2018-10-27 11:54:18,515 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:54:18,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:54:18,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:54:18,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:54:18,516 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:54:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:54:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:54:18,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:54:18,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:54:18,845 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:54:18,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:54:18,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:54:18,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:54:18,848 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-10-27 11:54:38,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:54:38,553 INFO L93 Difference]: Finished difference Result 5787 states and 10682 transitions. [2018-10-27 11:54:38,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:54:38,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-10-27 11:54:38,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:54:38,588 INFO L225 Difference]: With dead ends: 5787 [2018-10-27 11:54:38,589 INFO L226 Difference]: Without dead ends: 4268 [2018-10-27 11:54:38,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 11:54:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2018-10-27 11:54:38,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4242. [2018-10-27 11:54:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4242 states. [2018-10-27 11:54:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 6360 transitions. [2018-10-27 11:54:38,759 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 6360 transitions. Word has length 110 [2018-10-27 11:54:38,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:54:38,761 INFO L481 AbstractCegarLoop]: Abstraction has 4242 states and 6360 transitions. [2018-10-27 11:54:38,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:54:38,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 6360 transitions. [2018-10-27 11:54:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-27 11:54:38,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:54:38,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:38,772 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:54:38,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:54:38,772 INFO L82 PathProgramCache]: Analyzing trace with hash -697377769, now seen corresponding path program 1 times [2018-10-27 11:54:38,772 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:54:38,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:54:38,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:54:38,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:54:38,774 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:54:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:54:39,112 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:54:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:54:39,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:54:39,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:54:39,292 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:54:39,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:54:39,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:54:39,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:54:39,293 INFO L87 Difference]: Start difference. First operand 4242 states and 6360 transitions. Second operand 6 states. [2018-10-27 11:54:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:54:45,158 INFO L93 Difference]: Finished difference Result 12710 states and 20700 transitions. [2018-10-27 11:54:45,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:54:45,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-27 11:54:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:54:45,221 INFO L225 Difference]: With dead ends: 12710 [2018-10-27 11:54:45,222 INFO L226 Difference]: Without dead ends: 8474 [2018-10-27 11:54:45,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 11:54:45,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8474 states. [2018-10-27 11:54:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8474 to 8389. [2018-10-27 11:54:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8389 states. [2018-10-27 11:54:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8389 states to 8389 states and 12579 transitions. [2018-10-27 11:54:45,525 INFO L78 Accepts]: Start accepts. Automaton has 8389 states and 12579 transitions. Word has length 111 [2018-10-27 11:54:45,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:54:45,526 INFO L481 AbstractCegarLoop]: Abstraction has 8389 states and 12579 transitions. [2018-10-27 11:54:45,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:54:45,526 INFO L276 IsEmpty]: Start isEmpty. Operand 8389 states and 12579 transitions. [2018-10-27 11:54:45,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-27 11:54:45,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:54:45,534 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 11:54:45,534 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:54:45,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:54:45,535 INFO L82 PathProgramCache]: Analyzing trace with hash -2038002306, now seen corresponding path program 1 times [2018-10-27 11:54:45,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:54:45,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:54:45,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:54:45,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:54:45,536 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:54:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:54:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-27 11:54:45,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:54:45,883 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:54:45,883 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-10-27 11:54:45,885 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [858], [860], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 11:54:45,942 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:54:45,942 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:54:46,359 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 11:54:49,235 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:54:49,237 INFO L272 AbstractInterpreter]: Visited 87 different actions 492 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 11:54:49,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:54:49,281 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:54:49,844 INFO L227 lantSequenceWeakener]: Weakened 182 states. On average, predicates are now at 75.29% of their original sizes. [2018-10-27 11:54:49,845 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:54:50,471 INFO L415 sIntCurrentIteration]: We unified 184 AI predicates to 184 [2018-10-27 11:54:50,472 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:54:50,473 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:54:50,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-27 11:54:50,473 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:54:50,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 11:54:50,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 11:54:50,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 11:54:50,475 INFO L87 Difference]: Start difference. First operand 8389 states and 12579 transitions. Second operand 9 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown