java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:50:59,328 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:50:59,331 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:50:59,349 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:50:59,350 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:50:59,352 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:50:59,354 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:50:59,356 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:50:59,360 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:50:59,365 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:50:59,370 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:50:59,370 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:50:59,371 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:50:59,374 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:50:59,376 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:50:59,377 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:50:59,378 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:50:59,380 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:50:59,381 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:50:59,383 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:50:59,384 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:50:59,385 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:50:59,387 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:50:59,387 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:50:59,387 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:50:59,388 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:50:59,389 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:50:59,390 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:50:59,390 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:50:59,391 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:50:59,392 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:50:59,393 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:50:59,393 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:50:59,393 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:50:59,394 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:50:59,394 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:50:59,395 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:50:59,410 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:50:59,411 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:50:59,412 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:50:59,412 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:50:59,412 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:50:59,412 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:50:59,413 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:50:59,413 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:50:59,413 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:50:59,413 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:50:59,413 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:50:59,414 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:50:59,414 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:50:59,414 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:50:59,415 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:50:59,415 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:50:59,415 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:50:59,415 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:50:59,415 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:50:59,416 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:50:59,416 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:50:59,416 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:50:59,416 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:50:59,417 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:50:59,417 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:50:59,417 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:50:59,417 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:50:59,417 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:50:59,418 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:50:59,418 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:50:59,418 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:50:59,418 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:50:59,418 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:50:59,419 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:50:59,477 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:50:59,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:50:59,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:50:59,499 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:50:59,499 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:50:59,500 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label56_true-unreach-call.c [2018-10-27 14:50:59,561 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ad9e4b2b2/37837595578d4a1788b93becb32ca716/FLAG38b538753 [2018-10-27 14:51:00,249 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:51:00,250 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label56_true-unreach-call.c [2018-10-27 14:51:00,272 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ad9e4b2b2/37837595578d4a1788b93becb32ca716/FLAG38b538753 [2018-10-27 14:51:00,287 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ad9e4b2b2/37837595578d4a1788b93becb32ca716 [2018-10-27 14:51:00,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:51:00,301 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:51:00,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:51:00,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:51:00,306 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:51:00,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:51:00" (1/1) ... [2018-10-27 14:51:00,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769766bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:00, skipping insertion in model container [2018-10-27 14:51:00,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:51:00" (1/1) ... [2018-10-27 14:51:00,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:51:00,417 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:51:01,152 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:51:01,157 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:51:01,444 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:51:01,465 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:51:01,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:01 WrapperNode [2018-10-27 14:51:01,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:51:01,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:51:01,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:51:01,467 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:51:01,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:01" (1/1) ... [2018-10-27 14:51:01,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:01" (1/1) ... [2018-10-27 14:51:01,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:51:01,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:51:01,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:51:01,811 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:51:01,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:01" (1/1) ... [2018-10-27 14:51:01,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:01" (1/1) ... [2018-10-27 14:51:01,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:01" (1/1) ... [2018-10-27 14:51:01,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:01" (1/1) ... [2018-10-27 14:51:01,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:01" (1/1) ... [2018-10-27 14:51:01,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:01" (1/1) ... [2018-10-27 14:51:01,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:01" (1/1) ... [2018-10-27 14:51:01,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:51:01,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:51:01,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:51:01,970 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:51:01,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:51:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:51:02,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:51:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:51:02,044 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:51:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:51:02,044 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:51:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:51:02,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:51:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:51:02,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:51:11,152 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:51:11,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:51:11 BoogieIcfgContainer [2018-10-27 14:51:11,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:51:11,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:51:11,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:51:11,160 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:51:11,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:51:00" (1/3) ... [2018-10-27 14:51:11,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d3a9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:51:11, skipping insertion in model container [2018-10-27 14:51:11,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:51:01" (2/3) ... [2018-10-27 14:51:11,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d3a9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:51:11, skipping insertion in model container [2018-10-27 14:51:11,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:51:11" (3/3) ... [2018-10-27 14:51:11,165 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label56_true-unreach-call.c [2018-10-27 14:51:11,175 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:51:11,185 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:51:11,204 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:51:11,247 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:51:11,247 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:51:11,247 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:51:11,247 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:51:11,248 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:51:11,248 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:51:11,248 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:51:11,248 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:51:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 14:51:11,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-27 14:51:11,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:51:11,294 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] [2018-10-27 14:51:11,298 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:51:11,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:51:11,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1440344268, now seen corresponding path program 1 times [2018-10-27 14:51:11,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:51:11,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:51:11,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:51:11,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:51:11,358 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:51:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:51:11,768 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:51:11,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:51:11,836 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:51:11,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 14:51:11,836 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:51:11,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 14:51:11,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 14:51:11,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:51:11,862 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 14:51:16,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:51:16,529 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 14:51:16,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 14:51:16,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-10-27 14:51:16,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:51:16,560 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 14:51:16,560 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 14:51:16,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:51:16,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 14:51:16,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 14:51:16,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 14:51:16,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-10-27 14:51:16,685 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 40 [2018-10-27 14:51:16,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:51:16,686 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-10-27 14:51:16,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 14:51:16,687 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-10-27 14:51:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-27 14:51:16,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:51:16,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:51:16,695 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:51:16,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:51:16,696 INFO L82 PathProgramCache]: Analyzing trace with hash 884268999, now seen corresponding path program 1 times [2018-10-27 14:51:16,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:51:16,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:51:16,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:51:16,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:51:16,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:51:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:51:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:51:17,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:51:17,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:51:17,156 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:51:17,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:51:17,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:51:17,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:51:17,159 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-10-27 14:51:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:51:25,941 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-10-27 14:51:25,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:51:25,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-10-27 14:51:25,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:51:25,957 INFO L225 Difference]: With dead ends: 2184 [2018-10-27 14:51:25,957 INFO L226 Difference]: Without dead ends: 1446 [2018-10-27 14:51:25,963 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 [2018-10-27 14:51:25,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-10-27 14:51:26,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-10-27 14:51:26,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-10-27 14:51:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-10-27 14:51:26,039 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 133 [2018-10-27 14:51:26,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:51:26,040 INFO L481 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-10-27 14:51:26,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:51:26,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-10-27 14:51:26,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-27 14:51:26,059 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:51:26,060 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:51:26,060 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:51:26,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:51:26,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1634663824, now seen corresponding path program 1 times [2018-10-27 14:51:26,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:51:26,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:51:26,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:51:26,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:51:26,063 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:51:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:51:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 66 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 14:51:26,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:51:26,404 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:51:26,405 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-10-27 14:51:26,407 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [399], [401], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 14:51:26,465 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:51:26,466 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:51:27,001 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:51:27,003 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 14:51:27,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:51:27,049 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:51:27,648 INFO L227 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 77.69% of their original sizes. [2018-10-27 14:51:27,649 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:51:28,000 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-10-27 14:51:28,004 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:51:28,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:51:28,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 14:51:28,006 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:51:28,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 14:51:28,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 14:51:28,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 14:51:28,008 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 7 states. [2018-10-27 14:51:30,648 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown