java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem11_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:36:37,425 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:36:37,426 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:36:37,439 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:36:37,439 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:36:37,440 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:36:37,441 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:36:37,443 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:36:37,445 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:36:37,446 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:36:37,447 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:36:37,447 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:36:37,448 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:36:37,449 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:36:37,451 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:36:37,452 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:36:37,452 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:36:37,454 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:36:37,456 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:36:37,458 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:36:37,459 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:36:37,460 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:36:37,463 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:36:37,463 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:36:37,464 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:36:37,464 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:36:37,466 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:36:37,466 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:36:37,467 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:36:37,468 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:36:37,469 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:36:37,469 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:36:37,470 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:36:37,472 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:36:37,473 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:36:37,474 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:36:37,474 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:36:37,506 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:36:37,506 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:36:37,509 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:36:37,509 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:36:37,509 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:36:37,509 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:36:37,512 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:36:37,513 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:36:37,513 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:36:37,513 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:36:37,513 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:36:37,513 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:36:37,515 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:36:37,515 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:36:37,515 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:36:37,515 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:36:37,515 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:36:37,517 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:36:37,517 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:36:37,517 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:36:37,517 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:36:37,517 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:36:37,518 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:36:37,518 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:36:37,518 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:36:37,518 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:36:37,519 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:36:37,519 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:36:37,519 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:36:37,519 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:36:37,519 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:36:37,519 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:36:37,520 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:36:37,520 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:36:37,580 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:36:37,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:36:37,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:36:37,598 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:36:37,598 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:36:37,599 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label55_true-unreach-call.c [2018-11-07 14:36:37,656 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a0367b7/cb98e586b10743aebac78a4979b06bbb/FLAG5369e095e [2018-11-07 14:36:38,299 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:36:38,300 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label55_true-unreach-call.c [2018-11-07 14:36:38,328 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a0367b7/cb98e586b10743aebac78a4979b06bbb/FLAG5369e095e [2018-11-07 14:36:38,345 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a0367b7/cb98e586b10743aebac78a4979b06bbb [2018-11-07 14:36:38,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:36:38,357 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:36:38,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:36:38,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:36:38,362 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:36:38,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:36:38" (1/1) ... [2018-11-07 14:36:38,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f80c201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:38, skipping insertion in model container [2018-11-07 14:36:38,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:36:38" (1/1) ... [2018-11-07 14:36:38,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:36:38,462 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:36:39,048 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:36:39,054 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:36:39,264 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:36:39,286 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:36:39,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:39 WrapperNode [2018-11-07 14:36:39,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:36:39,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:36:39,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:36:39,288 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:36:39,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:39" (1/1) ... [2018-11-07 14:36:39,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:39" (1/1) ... [2018-11-07 14:36:39,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:36:39,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:36:39,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:36:39,474 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:36:39,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:39" (1/1) ... [2018-11-07 14:36:39,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:39" (1/1) ... [2018-11-07 14:36:39,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:39" (1/1) ... [2018-11-07 14:36:39,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:39" (1/1) ... [2018-11-07 14:36:39,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:39" (1/1) ... [2018-11-07 14:36:39,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:39" (1/1) ... [2018-11-07 14:36:39,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:39" (1/1) ... [2018-11-07 14:36:39,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:36:39,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:36:39,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:36:39,607 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:36:39,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 14:36:39,676 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:36:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:36:39,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:36:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:36:39,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:36:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:36:39,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:36:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:36:39,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:36:44,225 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:36:44,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:36:44 BoogieIcfgContainer [2018-11-07 14:36:44,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:36:44,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:36:44,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:36:44,233 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:36:44,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:36:38" (1/3) ... [2018-11-07 14:36:44,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579d1674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:36:44, skipping insertion in model container [2018-11-07 14:36:44,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:39" (2/3) ... [2018-11-07 14:36:44,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579d1674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:36:44, skipping insertion in model container [2018-11-07 14:36:44,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:36:44" (3/3) ... [2018-11-07 14:36:44,239 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label55_true-unreach-call.c [2018-11-07 14:36:44,250 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:36:44,261 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:36:44,279 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:36:44,324 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:36:44,324 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:36:44,325 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:36:44,325 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:36:44,325 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:36:44,325 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:36:44,325 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:36:44,326 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:36:44,362 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 14:36:44,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-07 14:36:44,372 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:36:44,374 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] [2018-11-07 14:36:44,376 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:36:44,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:36:44,383 INFO L82 PathProgramCache]: Analyzing trace with hash 2008695804, now seen corresponding path program 1 times [2018-11-07 14:36:44,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:36:44,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:44,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:36:44,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:44,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:36:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:36:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:36:44,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:36:44,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:36:44,894 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:36:44,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:36:44,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:36:44,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:36:44,918 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 14:36:48,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:36:48,273 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-11-07 14:36:48,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:36:48,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-11-07 14:36:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:36:48,296 INFO L225 Difference]: With dead ends: 979 [2018-11-07 14:36:48,297 INFO L226 Difference]: Without dead ends: 680 [2018-11-07 14:36:48,306 INFO L604 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 [2018-11-07 14:36:48,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-11-07 14:36:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-11-07 14:36:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-11-07 14:36:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-11-07 14:36:48,436 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 52 [2018-11-07 14:36:48,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:36:48,437 INFO L480 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-11-07 14:36:48,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:36:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-11-07 14:36:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 14:36:48,448 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:36:48,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:36:48,449 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:36:48,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:36:48,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1306963893, now seen corresponding path program 1 times [2018-11-07 14:36:48,450 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:36:48,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:48,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:36:48,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:48,453 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:36:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:36:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:36:48,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:36:48,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:36:48,866 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:36:48,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:36:48,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:36:48,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:36:48,869 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-11-07 14:36:52,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:36:52,622 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-11-07 14:36:52,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:36:52,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 14:36:52,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:36:52,632 INFO L225 Difference]: With dead ends: 1555 [2018-11-07 14:36:52,633 INFO L226 Difference]: Without dead ends: 1077 [2018-11-07 14:36:52,636 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:36:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-11-07 14:36:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-11-07 14:36:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-11-07 14:36:52,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-11-07 14:36:52,682 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 125 [2018-11-07 14:36:52,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:36:52,683 INFO L480 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-11-07 14:36:52,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:36:52,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-11-07 14:36:52,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-07 14:36:52,687 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:36:52,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:36:52,688 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:36:52,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:36:52,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1349379296, now seen corresponding path program 1 times [2018-11-07 14:36:52,688 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:36:52,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:52,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:36:52,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:52,693 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:36:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:36:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:36:52,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:36:52,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:36:52,905 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:36:52,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:36:52,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:36:52,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:36:52,906 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 4 states. [2018-11-07 14:36:55,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:36:55,750 INFO L93 Difference]: Finished difference Result 2907 states and 4465 transitions. [2018-11-07 14:36:55,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:36:55,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-11-07 14:36:55,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:36:55,778 INFO L225 Difference]: With dead ends: 2907 [2018-11-07 14:36:55,778 INFO L226 Difference]: Without dead ends: 1850 [2018-11-07 14:36:55,787 INFO L604 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 [2018-11-07 14:36:55,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2018-11-07 14:36:55,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1646. [2018-11-07 14:36:55,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2018-11-07 14:36:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2436 transitions. [2018-11-07 14:36:55,854 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2436 transitions. Word has length 126 [2018-11-07 14:36:55,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:36:55,855 INFO L480 AbstractCegarLoop]: Abstraction has 1646 states and 2436 transitions. [2018-11-07 14:36:55,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:36:55,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2436 transitions. [2018-11-07 14:36:55,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 14:36:55,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:36:55,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:36:55,863 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:36:55,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:36:55,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1663032705, now seen corresponding path program 1 times [2018-11-07 14:36:55,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:36:55,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:55,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:36:55,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:55,865 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:36:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:36:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:36:56,154 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:36:56,154 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:36:56,155 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-11-07 14:36:56,157 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], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:36:56,203 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:36:56,203 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:36:56,834 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:36:57,155 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:36:57,156 INFO L272 AbstractInterpreter]: Visited 99 different actions 99 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 14:36:57,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:36:57,206 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:36:58,001 INFO L227 lantSequenceWeakener]: Weakened 141 states. On average, predicates are now at 73.76% of their original sizes. [2018-11-07 14:36:58,002 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:36:58,337 INFO L415 sIntCurrentIteration]: We unified 146 AI predicates to 146 [2018-11-07 14:36:58,338 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:36:58,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:36:58,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 14:36:58,339 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:36:58,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:36:58,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:36:58,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:36:58,340 INFO L87 Difference]: Start difference. First operand 1646 states and 2436 transitions. Second operand 7 states. [2018-11-07 14:39:33,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:39:33,123 INFO L93 Difference]: Finished difference Result 3478 states and 5113 transitions. [2018-11-07 14:39:33,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:39:33,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2018-11-07 14:39:33,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:39:33,134 INFO L225 Difference]: With dead ends: 3478 [2018-11-07 14:39:33,134 INFO L226 Difference]: Without dead ends: 1838 [2018-11-07 14:39:33,140 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:39:33,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2018-11-07 14:39:33,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1836. [2018-11-07 14:39:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2018-11-07 14:39:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2636 transitions. [2018-11-07 14:39:33,188 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2636 transitions. Word has length 147 [2018-11-07 14:39:33,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:39:33,189 INFO L480 AbstractCegarLoop]: Abstraction has 1836 states and 2636 transitions. [2018-11-07 14:39:33,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 14:39:33,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2636 transitions. [2018-11-07 14:39:33,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-11-07 14:39:33,195 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:39:33,195 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:39:33,196 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:39:33,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:39:33,196 INFO L82 PathProgramCache]: Analyzing trace with hash 639193526, now seen corresponding path program 1 times [2018-11-07 14:39:33,197 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:39:33,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:39:33,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:39:33,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:39:33,198 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:39:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:39:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 14:39:34,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:39:34,103 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:39:34,104 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 265 with the following transitions: [2018-11-07 14:39:34,104 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], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:39:34,112 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:39:34,112 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:39:34,227 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:39:35,228 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:39:35,229 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 14:39:35,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:39:35,237 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:39:35,769 INFO L227 lantSequenceWeakener]: Weakened 261 states. On average, predicates are now at 73.51% of their original sizes. [2018-11-07 14:39:35,769 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:39:36,380 INFO L415 sIntCurrentIteration]: We unified 263 AI predicates to 263 [2018-11-07 14:39:36,381 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:39:36,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:39:36,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-07 14:39:36,382 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:39:36,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 14:39:36,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 14:39:36,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 14:39:36,383 INFO L87 Difference]: Start difference. First operand 1836 states and 2636 transitions. Second operand 11 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown