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/Problem15_label48_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:44:04,412 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:44:04,414 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:44:04,426 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:44:04,426 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:44:04,428 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:44:04,429 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:44:04,431 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:44:04,433 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:44:04,433 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:44:04,434 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:44:04,435 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:44:04,436 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:44:04,437 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:44:04,438 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:44:04,439 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:44:04,440 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:44:04,442 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:44:04,444 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:44:04,445 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:44:04,446 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:44:04,448 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:44:04,451 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:44:04,451 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:44:04,451 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:44:04,452 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:44:04,453 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:44:04,454 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:44:04,455 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:44:04,456 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:44:04,456 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:44:04,457 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:44:04,457 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:44:04,458 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:44:04,459 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:44:04,459 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:44:04,460 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 11:44:04,476 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:44:04,476 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:44:04,477 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:44:04,477 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:44:04,478 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:44:04,478 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:44:04,478 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:44:04,478 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:44:04,478 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:44:04,478 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:44:04,479 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:44:04,479 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:44:04,479 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:44:04,480 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:44:04,480 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:44:04,480 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:44:04,480 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:44:04,480 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:44:04,481 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:44:04,481 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:44:04,481 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:44:04,481 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:44:04,481 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:44:04,482 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:44:04,482 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:44:04,482 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:44:04,482 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:44:04,482 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:44:04,483 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:44:04,483 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:44:04,483 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:44:04,483 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:44:04,483 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:44:04,483 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:44:04,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:44:04,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:44:04,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:44:04,543 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:44:04,544 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:44:04,545 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label48_false-unreach-call.c [2018-10-27 11:44:04,600 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a211359e4/e86d395eb8e944e095b05cec8211c3cd/FLAGc47ac38ff [2018-10-27 11:44:05,237 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:44:05,238 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label48_false-unreach-call.c [2018-10-27 11:44:05,262 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a211359e4/e86d395eb8e944e095b05cec8211c3cd/FLAGc47ac38ff [2018-10-27 11:44:05,278 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a211359e4/e86d395eb8e944e095b05cec8211c3cd [2018-10-27 11:44:05,289 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:44:05,291 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:44:05,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:44:05,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:44:05,298 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:44:05,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:44:05" (1/1) ... [2018-10-27 11:44:05,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b78fa2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:05, skipping insertion in model container [2018-10-27 11:44:05,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:44:05" (1/1) ... [2018-10-27 11:44:05,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:44:05,415 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:44:06,200 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:44:06,204 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:44:06,509 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:44:06,531 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:44:06,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:06 WrapperNode [2018-10-27 11:44:06,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:44:06,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:44:06,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:44:06,534 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:44:06,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:06" (1/1) ... [2018-10-27 11:44:06,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:06" (1/1) ... [2018-10-27 11:44:06,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:44:06,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:44:06,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:44:06,928 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:44:06,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:06" (1/1) ... [2018-10-27 11:44:06,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:06" (1/1) ... [2018-10-27 11:44:06,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:06" (1/1) ... [2018-10-27 11:44:06,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:06" (1/1) ... [2018-10-27 11:44:07,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:06" (1/1) ... [2018-10-27 11:44:07,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:06" (1/1) ... [2018-10-27 11:44:07,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:06" (1/1) ... [2018-10-27 11:44:07,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:44:07,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:44:07,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:44:07,153 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:44:07,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:06" (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 11:44:07,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:44:07,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:44:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 11:44:07,219 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 11:44:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:44:07,220 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:44:07,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:44:07,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:44:07,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:44:07,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:44:13,745 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:44:13,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:44:13 BoogieIcfgContainer [2018-10-27 11:44:13,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:44:13,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:44:13,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:44:13,750 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:44:13,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:44:05" (1/3) ... [2018-10-27 11:44:13,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cebb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:44:13, skipping insertion in model container [2018-10-27 11:44:13,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:44:06" (2/3) ... [2018-10-27 11:44:13,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cebb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:44:13, skipping insertion in model container [2018-10-27 11:44:13,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:44:13" (3/3) ... [2018-10-27 11:44:13,754 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label48_false-unreach-call.c [2018-10-27 11:44:13,763 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:44:13,774 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:44:13,793 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:44:13,838 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:44:13,838 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:44:13,838 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:44:13,838 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:44:13,839 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:44:13,839 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:44:13,839 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:44:13,839 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:44:13,870 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 11:44:13,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-27 11:44:13,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:44:13,878 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] [2018-10-27 11:44:13,880 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:44:13,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:44:13,886 INFO L82 PathProgramCache]: Analyzing trace with hash -795648940, now seen corresponding path program 1 times [2018-10-27 11:44:13,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:44:13,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:13,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:44:13,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:13,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:44:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:44:14,330 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 11:44:14,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:44:14,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:44:14,333 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:44:14,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:44:14,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:44:14,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:44:14,359 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 11:44:21,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:44:21,999 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-10-27 11:44:21,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:44:22,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-10-27 11:44:22,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:44:22,027 INFO L225 Difference]: With dead ends: 1501 [2018-10-27 11:44:22,028 INFO L226 Difference]: Without dead ends: 1057 [2018-10-27 11:44:22,036 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 [2018-10-27 11:44:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-10-27 11:44:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-10-27 11:44:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 11:44:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-10-27 11:44:22,138 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 34 [2018-10-27 11:44:22,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:44:22,139 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-10-27 11:44:22,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:44:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-10-27 11:44:22,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-27 11:44:22,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:44:22,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:22,145 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:44:22,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:44:22,145 INFO L82 PathProgramCache]: Analyzing trace with hash 2085365791, now seen corresponding path program 1 times [2018-10-27 11:44:22,145 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:44:22,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:22,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:44:22,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:22,147 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:44:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:44:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:44:22,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:44:22,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:44:22,380 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:44:22,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:44:22,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:44:22,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:44:22,383 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 4 states. [2018-10-27 11:44:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:44:29,554 INFO L93 Difference]: Finished difference Result 2731 states and 4243 transitions. [2018-10-27 11:44:29,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:44:29,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2018-10-27 11:44:29,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:44:29,573 INFO L225 Difference]: With dead ends: 2731 [2018-10-27 11:44:29,573 INFO L226 Difference]: Without dead ends: 1993 [2018-10-27 11:44:29,580 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 [2018-10-27 11:44:29,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2018-10-27 11:44:29,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1989. [2018-10-27 11:44:29,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1989 states. [2018-10-27 11:44:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2769 transitions. [2018-10-27 11:44:29,670 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2769 transitions. Word has length 104 [2018-10-27 11:44:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:44:29,671 INFO L481 AbstractCegarLoop]: Abstraction has 1989 states and 2769 transitions. [2018-10-27 11:44:29,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:44:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2769 transitions. [2018-10-27 11:44:29,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-27 11:44:29,689 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:44:29,689 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 11:44:29,689 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:44:29,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:44:29,691 INFO L82 PathProgramCache]: Analyzing trace with hash -2108598302, now seen corresponding path program 1 times [2018-10-27 11:44:29,691 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:44:29,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:29,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:44:29,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:44:29,693 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:44:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:44:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 57 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 11:44:30,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:44:30,582 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:44:30,583 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-10-27 11:44:30,585 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], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [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], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [816], [821], [823], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 11:44:30,636 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:44:30,636 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:44:31,243 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 11:44:33,121 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:44:33,123 INFO L272 AbstractInterpreter]: Visited 130 different actions 874 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 11:44:33,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:44:33,172 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:44:34,294 INFO L227 lantSequenceWeakener]: Weakened 67 states. On average, predicates are now at 77.41% of their original sizes. [2018-10-27 11:44:34,294 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:44:37,327 INFO L415 sIntCurrentIteration]: We unified 253 AI predicates to 253 [2018-10-27 11:44:37,327 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:44:37,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:44:37,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-27 11:44:37,329 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:44:37,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 11:44:37,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 11:44:37,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2018-10-27 11:44:37,331 INFO L87 Difference]: Start difference. First operand 1989 states and 2769 transitions. Second operand 19 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown