java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:28:41,311 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:28:41,313 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:28:41,325 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:28:41,326 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:28:41,327 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:28:41,328 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:28:41,330 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:28:41,331 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:28:41,332 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:28:41,333 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:28:41,333 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:28:41,335 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:28:41,335 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:28:41,337 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:28:41,337 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:28:41,338 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:28:41,340 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:28:41,342 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:28:41,344 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:28:41,345 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:28:41,346 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:28:41,348 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:28:41,349 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:28:41,349 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:28:41,350 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:28:41,351 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:28:41,351 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:28:41,352 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:28:41,353 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:28:41,353 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:28:41,354 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:28:41,354 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:28:41,355 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:28:41,355 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:28:41,356 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:28:41,356 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:28:41,371 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:28:41,372 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:28:41,373 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:28:41,373 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:28:41,373 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:28:41,373 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:28:41,373 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:28:41,374 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:28:41,374 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:28:41,374 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:28:41,374 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:28:41,374 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:28:41,375 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:28:41,375 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:28:41,375 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:28:41,376 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:28:41,376 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:28:41,376 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:28:41,376 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:28:41,376 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:28:41,377 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:28:41,377 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:28:41,377 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:28:41,377 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:28:41,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:28:41,378 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:28:41,378 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:28:41,378 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:28:41,378 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:28:41,379 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:28:41,379 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:28:41,379 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:28:41,379 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:28:41,379 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:28:41,438 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:28:41,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:28:41,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:28:41,461 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:28:41,461 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:28:41,462 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-10-24 21:28:41,519 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/771b89e24/39d550659d3243f3827b81c35c78c2e1/FLAG98b02cb35 [2018-10-24 21:28:42,311 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:28:42,312 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label10_true-unreach-call.c [2018-10-24 21:28:42,354 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/771b89e24/39d550659d3243f3827b81c35c78c2e1/FLAG98b02cb35 [2018-10-24 21:28:42,375 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/771b89e24/39d550659d3243f3827b81c35c78c2e1 [2018-10-24 21:28:42,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:28:42,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:28:42,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:28:42,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:28:42,398 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:28:42,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:28:42" (1/1) ... [2018-10-24 21:28:42,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d96d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:42, skipping insertion in model container [2018-10-24 21:28:42,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:28:42" (1/1) ... [2018-10-24 21:28:42,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:28:42,599 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:28:44,068 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:28:44,072 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:28:44,806 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:28:44,843 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:28:44,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:44 WrapperNode [2018-10-24 21:28:44,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:28:44,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:28:44,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:28:44,845 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:28:44,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:44" (1/1) ... [2018-10-24 21:28:44,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:44" (1/1) ... [2018-10-24 21:28:45,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:28:45,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:28:45,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:28:45,424 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:28:45,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:44" (1/1) ... [2018-10-24 21:28:45,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:44" (1/1) ... [2018-10-24 21:28:45,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:44" (1/1) ... [2018-10-24 21:28:45,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:44" (1/1) ... [2018-10-24 21:28:45,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:44" (1/1) ... [2018-10-24 21:28:45,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:44" (1/1) ... [2018-10-24 21:28:45,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:44" (1/1) ... [2018-10-24 21:28:45,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:28:45,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:28:45,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:28:45,762 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:28:45,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:28:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:28:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:28:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:28:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:28:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:28:45,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:28:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:28:45,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:28:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:28:45,836 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:28:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:28:45,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:28:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:28:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:28:56,519 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:28:56,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:28:56 BoogieIcfgContainer [2018-10-24 21:28:56,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:28:56,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:28:56,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:28:56,525 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:28:56,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:28:42" (1/3) ... [2018-10-24 21:28:56,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290f48ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:28:56, skipping insertion in model container [2018-10-24 21:28:56,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:28:44" (2/3) ... [2018-10-24 21:28:56,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290f48ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:28:56, skipping insertion in model container [2018-10-24 21:28:56,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:28:56" (3/3) ... [2018-10-24 21:28:56,528 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label10_true-unreach-call.c [2018-10-24 21:28:56,538 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:28:56,547 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:28:56,564 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:28:56,621 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:28:56,622 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:28:56,622 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:28:56,622 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:28:56,622 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:28:56,622 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:28:56,622 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:28:56,623 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:28:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 21:28:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-24 21:28:56,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:28:56,688 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] [2018-10-24 21:28:56,690 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:28:56,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:28:56,696 INFO L82 PathProgramCache]: Analyzing trace with hash -2099536220, now seen corresponding path program 1 times [2018-10-24 21:28:56,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:28:56,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:28:56,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:28:56,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:28:56,751 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:28:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:28:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:28:57,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:28:57,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:28:57,218 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:28:57,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:28:57,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:28:57,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:28:57,243 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-24 21:29:15,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:29:15,312 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-10-24 21:29:15,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:29:15,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-10-24 21:29:15,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:29:15,369 INFO L225 Difference]: With dead ends: 4105 [2018-10-24 21:29:15,370 INFO L226 Difference]: Without dead ends: 2979 [2018-10-24 21:29:15,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:29:15,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-10-24 21:29:15,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-10-24 21:29:15,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-10-24 21:29:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-10-24 21:29:15,606 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 54 [2018-10-24 21:29:15,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:29:15,608 INFO L481 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-10-24 21:29:15,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:29:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-10-24 21:29:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 21:29:15,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:29:15,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:29:15,627 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:29:15,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:29:15,627 INFO L82 PathProgramCache]: Analyzing trace with hash 5864073, now seen corresponding path program 1 times [2018-10-24 21:29:15,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:29:15,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:15,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:29:15,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:15,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:29:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:29:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:29:15,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:29:15,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:29:15,991 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:29:15,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:29:15,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:29:15,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:29:15,993 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-10-24 21:29:36,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:29:36,549 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-10-24 21:29:36,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:29:36,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 21:29:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:29:36,597 INFO L225 Difference]: With dead ends: 10635 [2018-10-24 21:29:36,598 INFO L226 Difference]: Without dead ends: 7792 [2018-10-24 21:29:36,617 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:29:36,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-10-24 21:29:36,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-10-24 21:29:36,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-10-24 21:29:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-10-24 21:29:36,820 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 125 [2018-10-24 21:29:36,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:29:36,821 INFO L481 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-10-24 21:29:36,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:29:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-10-24 21:29:36,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 21:29:36,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:29:36,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:29:36,826 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:29:36,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:29:36,826 INFO L82 PathProgramCache]: Analyzing trace with hash 652308344, now seen corresponding path program 1 times [2018-10-24 21:29:36,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:29:36,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:36,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:29:36,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:36,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:29:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:29:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:29:37,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:29:37,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:29:37,049 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:29:37,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:29:37,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:29:37,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:29:37,051 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-10-24 21:29:52,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:29:52,493 INFO L93 Difference]: Finished difference Result 20526 states and 33998 transitions. [2018-10-24 21:29:52,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:29:52,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-10-24 21:29:52,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:29:52,557 INFO L225 Difference]: With dead ends: 20526 [2018-10-24 21:29:52,557 INFO L226 Difference]: Without dead ends: 12803 [2018-10-24 21:29:52,595 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 [2018-10-24 21:29:52,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12803 states. [2018-10-24 21:29:52,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12803 to 12725. [2018-10-24 21:29:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12725 states. [2018-10-24 21:29:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 19312 transitions. [2018-10-24 21:29:52,902 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 19312 transitions. Word has length 128 [2018-10-24 21:29:52,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:29:52,902 INFO L481 AbstractCegarLoop]: Abstraction has 12725 states and 19312 transitions. [2018-10-24 21:29:52,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:29:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 19312 transitions. [2018-10-24 21:29:52,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-24 21:29:52,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:29:52,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:29:52,918 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:29:52,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:29:52,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1098248393, now seen corresponding path program 1 times [2018-10-24 21:29:52,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:29:52,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:52,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:29:52,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:29:52,920 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:29:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:29:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:29:53,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:29:53,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:29:53,404 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:29:53,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:29:53,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:29:53,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:29:53,407 INFO L87 Difference]: Start difference. First operand 12725 states and 19312 transitions. Second operand 5 states. [2018-10-24 21:30:11,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:30:11,157 INFO L93 Difference]: Finished difference Result 38442 states and 61981 transitions. [2018-10-24 21:30:11,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:30:11,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2018-10-24 21:30:11,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:30:11,292 INFO L225 Difference]: With dead ends: 38442 [2018-10-24 21:30:11,292 INFO L226 Difference]: Without dead ends: 25723 [2018-10-24 21:30:11,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:30:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25723 states. [2018-10-24 21:30:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25723 to 25421. [2018-10-24 21:30:11,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25421 states. [2018-10-24 21:30:11,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25421 states to 25421 states and 37358 transitions. [2018-10-24 21:30:11,978 INFO L78 Accepts]: Start accepts. Automaton has 25421 states and 37358 transitions. Word has length 214 [2018-10-24 21:30:11,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:30:11,978 INFO L481 AbstractCegarLoop]: Abstraction has 25421 states and 37358 transitions. [2018-10-24 21:30:11,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:30:11,979 INFO L276 IsEmpty]: Start isEmpty. Operand 25421 states and 37358 transitions. [2018-10-24 21:30:12,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-24 21:30:12,005 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:30:12,005 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:30:12,006 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:30:12,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:30:12,006 INFO L82 PathProgramCache]: Analyzing trace with hash -426955638, now seen corresponding path program 1 times [2018-10-24 21:30:12,006 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:30:12,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:12,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:30:12,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:12,008 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:30:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:30:12,313 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:30:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 94 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:30:12,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:30:12,587 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:30:12,588 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 288 with the following transitions: [2018-10-24 21:30:12,591 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2959], [2961], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3132], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3571], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 21:30:12,680 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:30:12,681 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:30:22,343 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:30:22,345 INFO L272 AbstractInterpreter]: Visited 165 different actions 165 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:30:22,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:30:22,376 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:30:27,420 INFO L232 lantSequenceWeakener]: Weakened 266 states. On average, predicates are now at 71.59% of their original sizes. [2018-10-24 21:30:27,420 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:30:29,516 INFO L413 sIntCurrentIteration]: We have 286 unified AI predicates [2018-10-24 21:30:29,516 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:30:29,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:30:29,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-24 21:30:29,517 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:30:29,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 21:30:29,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 21:30:29,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-10-24 21:30:29,518 INFO L87 Difference]: Start difference. First operand 25421 states and 37358 transitions. Second operand 12 states. [2018-10-24 21:30:47,470 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