java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:51:51,381 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:51:51,383 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:51:51,399 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:51:51,399 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:51:51,400 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:51:51,401 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:51:51,403 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:51:51,405 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:51:51,406 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:51:51,407 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:51:51,407 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:51:51,408 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:51:51,411 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:51:51,412 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:51:51,412 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:51:51,415 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:51:51,422 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:51:51,426 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:51:51,428 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:51:51,431 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:51:51,433 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:51:51,436 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:51:51,436 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:51:51,436 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:51:51,437 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:51:51,439 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:51:51,439 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:51:51,442 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:51:51,445 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:51:51,445 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:51:51,446 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:51:51,446 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:51:51,447 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:51:51,448 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:51:51,450 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:51:51,450 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:51:51,476 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:51:51,476 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:51:51,477 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:51:51,477 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:51:51,478 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:51:51,478 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:51:51,478 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:51:51,478 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:51:51,478 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:51:51,479 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:51:51,479 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:51:51,479 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:51:51,480 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:51:51,480 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:51:51,480 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:51:51,480 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:51:51,480 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:51:51,481 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:51:51,481 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:51:51,481 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:51:51,481 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:51:51,481 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:51:51,482 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:51:51,482 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:51:51,482 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:51:51,482 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:51:51,482 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:51:51,482 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:51:51,483 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:51:51,483 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:51:51,483 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:51:51,483 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:51:51,483 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:51:51,484 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:51:51,546 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:51:51,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:51:51,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:51:51,564 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:51:51,564 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:51:51,565 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-10-24 21:51:51,631 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc12b267c/94b26249d5b3482dbe8ea1502d517904/FLAGb2bb5553e [2018-10-24 21:51:52,359 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:51:52,359 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label49_true-unreach-call.c [2018-10-24 21:51:52,383 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc12b267c/94b26249d5b3482dbe8ea1502d517904/FLAGb2bb5553e [2018-10-24 21:51:52,399 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc12b267c/94b26249d5b3482dbe8ea1502d517904 [2018-10-24 21:51:52,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:51:52,412 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:51:52,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:51:52,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:51:52,416 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:51:52,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:51:52" (1/1) ... [2018-10-24 21:51:52,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b5a5b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:52, skipping insertion in model container [2018-10-24 21:51:52,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:51:52" (1/1) ... [2018-10-24 21:51:52,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:51:52,539 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:51:53,339 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:51:53,343 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:51:53,653 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:51:53,685 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:51:53,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:53 WrapperNode [2018-10-24 21:51:53,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:51:53,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:51:53,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:51:53,687 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:51:53,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:53" (1/1) ... [2018-10-24 21:51:53,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:53" (1/1) ... [2018-10-24 21:51:54,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:51:54,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:51:54,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:51:54,088 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:51:54,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:53" (1/1) ... [2018-10-24 21:51:54,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:53" (1/1) ... [2018-10-24 21:51:54,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:53" (1/1) ... [2018-10-24 21:51:54,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:53" (1/1) ... [2018-10-24 21:51:54,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:53" (1/1) ... [2018-10-24 21:51:54,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:53" (1/1) ... [2018-10-24 21:51:54,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:53" (1/1) ... [2018-10-24 21:51:54,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:51:54,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:51:54,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:51:54,251 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:51:54,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:51:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:51:54,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:51:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:51:54,322 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:51:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:51:54,322 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:51:54,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:51:54,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:51:54,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:51:54,323 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:52:02,111 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:52:02,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:52:02 BoogieIcfgContainer [2018-10-24 21:52:02,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:52:02,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:52:02,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:52:02,117 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:52:02,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:51:52" (1/3) ... [2018-10-24 21:52:02,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dae162d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:52:02, skipping insertion in model container [2018-10-24 21:52:02,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:51:53" (2/3) ... [2018-10-24 21:52:02,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dae162d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:52:02, skipping insertion in model container [2018-10-24 21:52:02,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:52:02" (3/3) ... [2018-10-24 21:52:02,121 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label49_true-unreach-call.c [2018-10-24 21:52:02,130 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:52:02,143 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:52:02,160 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:52:02,218 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:52:02,218 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:52:02,218 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:52:02,218 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:52:02,219 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:52:02,219 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:52:02,219 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:52:02,219 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:52:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 21:52:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-24 21:52:02,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:02,268 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] [2018-10-24 21:52:02,270 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:02,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:02,279 INFO L82 PathProgramCache]: Analyzing trace with hash -224629815, now seen corresponding path program 1 times [2018-10-24 21:52:02,282 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:02,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:02,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:02,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:02,336 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:52:02,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:52:02,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:52:02,853 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:52:02,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:52:02,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:52:02,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:52:02,879 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 21:52:10,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:52:10,495 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-10-24 21:52:10,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:52:10,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-10-24 21:52:10,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:52:10,540 INFO L225 Difference]: With dead ends: 1550 [2018-10-24 21:52:10,541 INFO L226 Difference]: Without dead ends: 1106 [2018-10-24 21:52:10,559 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:52:10,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-10-24 21:52:10,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-10-24 21:52:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-10-24 21:52:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-10-24 21:52:10,679 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 59 [2018-10-24 21:52:10,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:52:10,680 INFO L481 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-10-24 21:52:10,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:52:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-10-24 21:52:10,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 21:52:10,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:10,697 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] [2018-10-24 21:52:10,697 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:10,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:10,699 INFO L82 PathProgramCache]: Analyzing trace with hash 311881044, now seen corresponding path program 1 times [2018-10-24 21:52:10,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:10,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:10,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:10,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:10,701 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:52:10,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:52:10,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:52:10,944 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:52:10,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:52:10,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:52:10,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:52:10,948 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-10-24 21:52:20,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:52:20,014 INFO L93 Difference]: Finished difference Result 2245 states and 3758 transitions. [2018-10-24 21:52:20,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:52:20,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-10-24 21:52:20,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:52:20,026 INFO L225 Difference]: With dead ends: 2245 [2018-10-24 21:52:20,026 INFO L226 Difference]: Without dead ends: 1489 [2018-10-24 21:52:20,030 INFO L605 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 [2018-10-24 21:52:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2018-10-24 21:52:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1457. [2018-10-24 21:52:20,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-10-24 21:52:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-10-24 21:52:20,092 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 132 [2018-10-24 21:52:20,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:52:20,093 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-10-24 21:52:20,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:52:20,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-10-24 21:52:20,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 21:52:20,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:20,097 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] [2018-10-24 21:52:20,097 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:20,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:20,097 INFO L82 PathProgramCache]: Analyzing trace with hash 827365732, now seen corresponding path program 1 times [2018-10-24 21:52:20,098 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:20,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:20,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:20,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:20,099 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:52:20,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:52:20,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:52:20,313 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:52:20,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:52:20,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:52:20,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:52:20,314 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-10-24 21:52:28,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:52:28,931 INFO L93 Difference]: Finished difference Result 5405 states and 8310 transitions. [2018-10-24 21:52:28,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:52:28,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-10-24 21:52:28,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:52:28,965 INFO L225 Difference]: With dead ends: 5405 [2018-10-24 21:52:28,967 INFO L226 Difference]: Without dead ends: 3954 [2018-10-24 21:52:28,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:52:28,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2018-10-24 21:52:29,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3951. [2018-10-24 21:52:29,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3951 states. [2018-10-24 21:52:29,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 5460 transitions. [2018-10-24 21:52:29,099 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 5460 transitions. Word has length 140 [2018-10-24 21:52:29,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:52:29,100 INFO L481 AbstractCegarLoop]: Abstraction has 3951 states and 5460 transitions. [2018-10-24 21:52:29,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:52:29,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 5460 transitions. [2018-10-24 21:52:29,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 21:52:29,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:29,105 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] [2018-10-24 21:52:29,105 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:29,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:29,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1388399790, now seen corresponding path program 1 times [2018-10-24 21:52:29,106 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:29,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:29,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:29,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:29,107 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:52:29,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:52:29,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:52:29,478 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:52:29,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:52:29,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:52:29,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:52:29,480 INFO L87 Difference]: Start difference. First operand 3951 states and 5460 transitions. Second operand 6 states. [2018-10-24 21:52:35,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:52:35,007 INFO L93 Difference]: Finished difference Result 9149 states and 12436 transitions. [2018-10-24 21:52:35,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:52:35,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-24 21:52:35,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:52:35,035 INFO L225 Difference]: With dead ends: 9149 [2018-10-24 21:52:35,037 INFO L226 Difference]: Without dead ends: 5204 [2018-10-24 21:52:35,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:52:35,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5204 states. [2018-10-24 21:52:35,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5204 to 5146. [2018-10-24 21:52:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5146 states. [2018-10-24 21:52:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5146 states to 5146 states and 6609 transitions. [2018-10-24 21:52:35,204 INFO L78 Accepts]: Start accepts. Automaton has 5146 states and 6609 transitions. Word has length 146 [2018-10-24 21:52:35,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:52:35,205 INFO L481 AbstractCegarLoop]: Abstraction has 5146 states and 6609 transitions. [2018-10-24 21:52:35,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:52:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5146 states and 6609 transitions. [2018-10-24 21:52:35,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-24 21:52:35,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:52:35,209 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, 1] [2018-10-24 21:52:35,209 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:52:35,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:35,210 INFO L82 PathProgramCache]: Analyzing trace with hash 389844774, now seen corresponding path program 1 times [2018-10-24 21:52:35,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:52:35,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:35,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:52:35,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:52:35,211 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:52:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:52:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:52:36,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:52:36,057 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:52:36,058 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 172 with the following transitions: [2018-10-24 21:52:36,062 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:52:36,147 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:52:36,147 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:52:38,991 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:52:38,993 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:52:39,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:52:39,007 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:52:40,697 INFO L232 lantSequenceWeakener]: Weakened 166 states. On average, predicates are now at 78.48% of their original sizes. [2018-10-24 21:52:40,698 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:52:41,251 INFO L413 sIntCurrentIteration]: We have 170 unified AI predicates [2018-10-24 21:52:41,251 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:52:41,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:52:41,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-24 21:52:41,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:52:41,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:52:41,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:52:41,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:52:41,254 INFO L87 Difference]: Start difference. First operand 5146 states and 6609 transitions. Second operand 8 states. [2018-10-24 21:52:44,784 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:53:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:53:55,726 INFO L93 Difference]: Finished difference Result 10596 states and 13576 transitions. [2018-10-24 21:53:55,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:53:55,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2018-10-24 21:53:55,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:53:55,747 INFO L225 Difference]: With dead ends: 10596 [2018-10-24 21:53:55,747 INFO L226 Difference]: Without dead ends: 5456 [2018-10-24 21:53:55,760 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:53:55,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5456 states. [2018-10-24 21:53:55,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5456 to 5454. [2018-10-24 21:53:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5454 states. [2018-10-24 21:53:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5454 states to 5454 states and 6926 transitions. [2018-10-24 21:53:55,999 INFO L78 Accepts]: Start accepts. Automaton has 5454 states and 6926 transitions. Word has length 171 [2018-10-24 21:53:56,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:53:56,000 INFO L481 AbstractCegarLoop]: Abstraction has 5454 states and 6926 transitions. [2018-10-24 21:53:56,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 21:53:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5454 states and 6926 transitions. [2018-10-24 21:53:56,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-24 21:53:56,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:53:56,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:53:56,008 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:53:56,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:53:56,008 INFO L82 PathProgramCache]: Analyzing trace with hash -34095748, now seen corresponding path program 1 times [2018-10-24 21:53:56,008 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:53:56,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:56,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:53:56,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:56,010 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:53:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:53:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:53:57,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:53:57,004 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:53:57,004 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-10-24 21:53:57,004 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:53:57,014 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:53:57,014 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:53:58,347 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:54:05,443 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:54:05,444 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:54:05,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:54:05,454 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:54:07,466 INFO L232 lantSequenceWeakener]: Weakened 73 states. On average, predicates are now at 78.64% of their original sizes. [2018-10-24 21:54:07,466 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 21:55:48,018 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:55:48,023 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:55:48,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:55:48 BoogieIcfgContainer [2018-10-24 21:55:48,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:55:48,024 INFO L168 Benchmark]: Toolchain (without parser) took 235613.58 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -409.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:55:48,026 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:55:48,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1273.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:55:48,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 401.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -849.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:55:48,029 INFO L168 Benchmark]: Boogie Preprocessor took 162.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:55:48,030 INFO L168 Benchmark]: RCFGBuilder took 7861.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 315.7 MB). Peak memory consumption was 315.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:55:48,031 INFO L168 Benchmark]: TraceAbstraction took 225910.35 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 3.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 21:55:48,036 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1273.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 401.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -849.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7861.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 315.7 MB). Peak memory consumption was 315.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225910.35 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 3.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 163). Cancelled while BasicCegarLoop was analyzing trace of length 268 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 225.8s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 105.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1470 SDtfs, 5133 SDslu, 1158 SDs, 0 SdLazy, 9140 SolverSat, 1982 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 202 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5454occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9953712937109427 AbsIntWeakeningRatio, 0.10550458715596331 AbsIntAvgWeakeningVarsNumRemoved, 666.8394495412844 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 439 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 648 NumberOfCodeBlocks, 648 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 643 ConstructedInterpolants, 0 QuantifiedInterpolants, 314565 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 156/208 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown