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/Problem14_label33_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:27:17,605 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:27:17,608 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:27:17,620 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:27:17,621 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:27:17,622 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:27:17,623 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:27:17,625 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:27:17,627 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:27:17,628 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:27:17,628 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:27:17,629 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:27:17,630 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:27:17,631 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:27:17,632 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:27:17,633 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:27:17,633 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:27:17,635 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:27:17,637 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:27:17,639 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:27:17,640 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:27:17,642 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:27:17,647 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:27:17,648 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:27:17,648 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:27:17,649 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:27:17,652 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:27:17,653 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:27:17,654 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:27:17,655 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:27:17,655 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:27:17,656 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:27:17,656 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:27:17,656 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:27:17,657 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:27:17,658 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:27:17,659 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 14:27:17,674 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:27:17,675 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:27:17,676 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:27:17,676 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:27:17,676 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:27:17,676 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:27:17,677 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:27:17,677 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:27:17,677 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:27:17,677 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:27:17,677 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:27:17,677 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:27:17,678 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:27:17,678 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:27:17,678 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:27:17,679 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:27:17,679 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:27:17,679 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:27:17,679 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:27:17,679 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:27:17,680 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:27:17,680 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:27:17,680 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:27:17,680 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:27:17,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:27:17,681 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:27:17,681 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:27:17,681 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:27:17,681 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:27:17,681 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:27:17,682 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:27:17,682 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:27:17,682 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:27:17,682 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:27:17,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:27:17,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:27:17,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:27:17,747 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:27:17,748 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:27:17,748 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label33_true-unreach-call_false-termination.c [2018-10-27 14:27:17,806 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48985b57c/fdfbc5faa9874153b9bc69db696570ed/FLAGd31a7703d [2018-10-27 14:27:18,383 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:27:18,384 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label33_true-unreach-call_false-termination.c [2018-10-27 14:27:18,406 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48985b57c/fdfbc5faa9874153b9bc69db696570ed/FLAGd31a7703d [2018-10-27 14:27:18,422 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/48985b57c/fdfbc5faa9874153b9bc69db696570ed [2018-10-27 14:27:18,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:27:18,437 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:27:18,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:27:18,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:27:18,442 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:27:18,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:27:18" (1/1) ... [2018-10-27 14:27:18,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5722cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:18, skipping insertion in model container [2018-10-27 14:27:18,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:27:18" (1/1) ... [2018-10-27 14:27:18,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:27:18,527 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:27:19,102 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:27:19,106 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:27:19,264 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:27:19,283 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:27:19,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19 WrapperNode [2018-10-27 14:27:19,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:27:19,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:27:19,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:27:19,285 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:27:19,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 14:27:19,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 14:27:19,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:27:19,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:27:19,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:27:19,546 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:27:19,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 14:27:19,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 14:27:19,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 14:27:19,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 14:27:19,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 14:27:19,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 14:27:19,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (1/1) ... [2018-10-27 14:27:19,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:27:19,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:27:19,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:27:19,663 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:27:19,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (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 14:27:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:27:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:27:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:27:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:27:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:27:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:27:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:27:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:27:23,245 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:27:23,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:27:23 BoogieIcfgContainer [2018-10-27 14:27:23,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:27:23,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:27:23,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:27:23,252 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:27:23,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:27:18" (1/3) ... [2018-10-27 14:27:23,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe17036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:27:23, skipping insertion in model container [2018-10-27 14:27:23,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:27:19" (2/3) ... [2018-10-27 14:27:23,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe17036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:27:23, skipping insertion in model container [2018-10-27 14:27:23,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:27:23" (3/3) ... [2018-10-27 14:27:23,256 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label33_true-unreach-call_false-termination.c [2018-10-27 14:27:23,266 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:27:23,275 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:27:23,293 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:27:23,335 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:27:23,335 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:27:23,335 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:27:23,336 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:27:23,336 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:27:23,337 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:27:23,337 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:27:23,337 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:27:23,373 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 14:27:23,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-27 14:27:23,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:27:23,387 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, 1, 1, 1, 1, 1, 1] [2018-10-27 14:27:23,389 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:27:23,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:27:23,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1913036537, now seen corresponding path program 1 times [2018-10-27 14:27:23,397 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:27:23,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:27:23,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:27:23,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:27:23,456 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:27:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:27:23,898 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:27:23,957 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 14:27:23,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:27:23,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 14:27:23,960 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:27:23,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 14:27:23,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 14:27:23,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:27:23,989 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-27 14:27:25,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:27:25,957 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-27 14:27:25,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 14:27:25,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-10-27 14:27:25,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:27:25,980 INFO L225 Difference]: With dead ends: 691 [2018-10-27 14:27:25,980 INFO L226 Difference]: Without dead ends: 434 [2018-10-27 14:27:25,990 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 14:27:26,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-27 14:27:26,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-27 14:27:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 14:27:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-27 14:27:26,077 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 65 [2018-10-27 14:27:26,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:27:26,078 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-27 14:27:26,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 14:27:26,079 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-27 14:27:26,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-27 14:27:26,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:27:26,092 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, 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] [2018-10-27 14:27:26,093 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:27:26,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:27:26,093 INFO L82 PathProgramCache]: Analyzing trace with hash 920993175, now seen corresponding path program 1 times [2018-10-27 14:27:26,094 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:27:26,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:27:26,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:27:26,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:27:26,097 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:27:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:27:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:27:26,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:27:26,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:27:26,427 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:27:26,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:27:26,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:27:26,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:27:26,430 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-27 14:27:28,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:27:28,439 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-27 14:27:28,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:27:28,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-27 14:27:28,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:27:28,446 INFO L225 Difference]: With dead ends: 1062 [2018-10-27 14:27:28,446 INFO L226 Difference]: Without dead ends: 634 [2018-10-27 14:27:28,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:27:28,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-27 14:27:28,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-27 14:27:28,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-27 14:27:28,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-27 14:27:28,487 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 140 [2018-10-27 14:27:28,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:27:28,488 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-27 14:27:28,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:27:28,488 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-27 14:27:28,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-27 14:27:28,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:27:28,494 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, 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] [2018-10-27 14:27:28,494 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:27:28,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:27:28,495 INFO L82 PathProgramCache]: Analyzing trace with hash 409670480, now seen corresponding path program 1 times [2018-10-27 14:27:28,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:27:28,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:27:28,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:27:28,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:27:28,497 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:27:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:27:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:27:29,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:27:29,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:27:29,029 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:27:29,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:27:29,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:27:29,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:27:29,031 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 6 states. [2018-10-27 14:27:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:27:34,268 INFO L93 Difference]: Finished difference Result 1819 states and 2988 transitions. [2018-10-27 14:27:34,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 14:27:34,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-10-27 14:27:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:27:34,278 INFO L225 Difference]: With dead ends: 1819 [2018-10-27 14:27:34,278 INFO L226 Difference]: Without dead ends: 1200 [2018-10-27 14:27:34,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 14:27:34,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2018-10-27 14:27:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1140. [2018-10-27 14:27:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1140 states. [2018-10-27 14:27:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1733 transitions. [2018-10-27 14:27:34,326 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1733 transitions. Word has length 149 [2018-10-27 14:27:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:27:34,327 INFO L481 AbstractCegarLoop]: Abstraction has 1140 states and 1733 transitions. [2018-10-27 14:27:34,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:27:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1733 transitions. [2018-10-27 14:27:34,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-27 14:27:34,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:27:34,333 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:27:34,333 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:27:34,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:27:34,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1226965922, now seen corresponding path program 1 times [2018-10-27 14:27:34,334 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:27:34,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:27:34,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:27:34,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:27:34,335 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:27:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:27:34,783 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 14:27:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:27:35,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:27:35,329 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:27:35,330 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-10-27 14:27:35,332 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [421], [423], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 14:27:35,374 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:27:35,375 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:27:36,027 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:27:36,029 INFO L272 AbstractInterpreter]: Visited 93 different actions 179 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 14:27:36,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:27:36,074 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:27:36,843 INFO L227 lantSequenceWeakener]: Weakened 48 states. On average, predicates are now at 79.83% of their original sizes. [2018-10-27 14:27:36,843 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:27:38,176 INFO L415 sIntCurrentIteration]: We unified 233 AI predicates to 233 [2018-10-27 14:27:38,176 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:27:38,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:27:38,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [12] total 31 [2018-10-27 14:27:38,178 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:27:38,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-27 14:27:38,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-27 14:27:38,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2018-10-27 14:27:38,180 INFO L87 Difference]: Start difference. First operand 1140 states and 1733 transitions. Second operand 21 states. [2018-10-27 14:27:51,601 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