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_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:30:29,838 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:30:29,840 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:30:29,854 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:30:29,854 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:30:29,855 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:30:29,857 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:30:29,860 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:30:29,862 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:30:29,863 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:30:29,868 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:30:29,868 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:30:29,869 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:30:29,873 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:30:29,875 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:30:29,875 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:30:29,878 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:30:29,880 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:30:29,883 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:30:29,885 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:30:29,886 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:30:29,887 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:30:29,890 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:30:29,890 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:30:29,890 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:30:29,891 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:30:29,892 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:30:29,893 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:30:29,894 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:30:29,895 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:30:29,895 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:30:29,896 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:30:29,896 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:30:29,896 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:30:29,897 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:30:29,898 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:30:29,898 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 21:30:29,922 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:30:29,922 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:30:29,924 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:30:29,924 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:30:29,924 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:30:29,924 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:30:29,924 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:30:29,925 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:30:29,925 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:30:29,925 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:30:29,925 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:30:29,925 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:30:29,926 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:30:29,927 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:30:29,927 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:30:29,927 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:30:29,927 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:30:29,927 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:30:29,929 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:30:29,929 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:30:29,930 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:30:29,930 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:30:29,930 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:30:29,930 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:30:29,930 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:30:29,931 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:30:29,931 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:30:29,931 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:30:29,931 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:30:29,932 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:30:29,932 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:30:29,932 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:30:29,932 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:30:29,932 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:30:30,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:30:30,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:30:30,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:30:30,027 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:30:30,027 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:30:30,028 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c [2018-10-24 21:30:30,087 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3cdd224ab/5609c5778d784a88a4dbbae3357b9912/FLAG31333c13f [2018-10-24 21:30:30,947 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:30:30,948 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c [2018-10-24 21:30:30,984 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3cdd224ab/5609c5778d784a88a4dbbae3357b9912/FLAG31333c13f [2018-10-24 21:30:31,002 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3cdd224ab/5609c5778d784a88a4dbbae3357b9912 [2018-10-24 21:30:31,015 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:30:31,016 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:30:31,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:30:31,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:30:31,022 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:30:31,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:30:31" (1/1) ... [2018-10-24 21:30:31,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3567d6e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:31, skipping insertion in model container [2018-10-24 21:30:31,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:30:31" (1/1) ... [2018-10-24 21:30:31,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:30:31,215 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:30:32,826 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:30:32,834 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:30:33,565 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:30:33,604 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:30:33,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:33 WrapperNode [2018-10-24 21:30:33,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:30:33,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:30:33,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:30:33,607 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:30:33,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:33" (1/1) ... [2018-10-24 21:30:33,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:33" (1/1) ... [2018-10-24 21:30:34,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:30:34,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:30:34,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:30:34,320 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:30:34,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:33" (1/1) ... [2018-10-24 21:30:34,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:33" (1/1) ... [2018-10-24 21:30:34,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:33" (1/1) ... [2018-10-24 21:30:34,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:33" (1/1) ... [2018-10-24 21:30:34,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:33" (1/1) ... [2018-10-24 21:30:34,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:33" (1/1) ... [2018-10-24 21:30:34,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:33" (1/1) ... [2018-10-24 21:30:34,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:30:34,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:30:34,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:30:34,675 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:30:34,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:33" (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 21:30:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:30:34,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:30:34,755 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:30:34,756 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:30:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:30:34,756 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:30:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:30:34,757 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:30:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:30:34,757 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:30:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:30:34,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:30:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:30:34,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:30:45,461 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:30:45,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:30:45 BoogieIcfgContainer [2018-10-24 21:30:45,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:30:45,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:30:45,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:30:45,466 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:30:45,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:30:31" (1/3) ... [2018-10-24 21:30:45,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116e1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:30:45, skipping insertion in model container [2018-10-24 21:30:45,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:30:33" (2/3) ... [2018-10-24 21:30:45,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116e1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:30:45, skipping insertion in model container [2018-10-24 21:30:45,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:30:45" (3/3) ... [2018-10-24 21:30:45,471 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label20_true-unreach-call.c [2018-10-24 21:30:45,483 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:30:45,497 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:30:45,515 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:30:45,580 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:30:45,580 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:30:45,580 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:30:45,580 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:30:45,580 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:30:45,580 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:30:45,581 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:30:45,581 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:30:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 21:30:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-24 21:30:45,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:30:45,639 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] [2018-10-24 21:30:45,641 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:30:45,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:30:45,647 INFO L82 PathProgramCache]: Analyzing trace with hash -113256892, now seen corresponding path program 1 times [2018-10-24 21:30:45,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:30:45,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:45,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:30:45,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:30:45,706 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:30:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:30:46,245 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 21:30:46,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:30:46,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:30:46,248 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:30:46,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:30:46,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:30:46,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:30:46,275 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-24 21:31:01,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:01,104 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-10-24 21:31:01,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:31:01,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-10-24 21:31:01,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:01,153 INFO L225 Difference]: With dead ends: 3968 [2018-10-24 21:31:01,154 INFO L226 Difference]: Without dead ends: 2842 [2018-10-24 21:31:01,168 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 21:31:01,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-24 21:31:01,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-10-24 21:31:01,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-24 21:31:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-10-24 21:31:01,347 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 62 [2018-10-24 21:31:01,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:01,348 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-10-24 21:31:01,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:31:01,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-10-24 21:31:01,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 21:31:01,364 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:01,364 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, 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 21:31:01,364 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:01,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:01,365 INFO L82 PathProgramCache]: Analyzing trace with hash 12905824, now seen corresponding path program 1 times [2018-10-24 21:31:01,365 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:01,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:01,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:01,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:01,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:01,726 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:01,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:01,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:31:01,726 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:01,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:31:01,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:31:01,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:31:01,731 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-10-24 21:31:17,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:17,180 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-10-24 21:31:17,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:31:17,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-10-24 21:31:17,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:17,209 INFO L225 Difference]: With dead ends: 5673 [2018-10-24 21:31:17,209 INFO L226 Difference]: Without dead ends: 3698 [2018-10-24 21:31:17,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:31:17,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-10-24 21:31:17,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-10-24 21:31:17,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-10-24 21:31:17,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-10-24 21:31:17,320 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 132 [2018-10-24 21:31:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:17,321 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-10-24 21:31:17,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:31:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-10-24 21:31:17,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 21:31:17,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:17,326 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, 1, 1, 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 21:31:17,327 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:17,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:17,327 INFO L82 PathProgramCache]: Analyzing trace with hash -906091524, now seen corresponding path program 1 times [2018-10-24 21:31:17,327 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:17,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:17,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:17,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:17,329 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:17,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:17,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:31:17,482 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:17,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:31:17,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:31:17,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:31:17,483 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-10-24 21:31:35,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:35,218 INFO L93 Difference]: Finished difference Result 10963 states and 17865 transitions. [2018-10-24 21:31:35,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:31:35,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-10-24 21:31:35,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:35,260 INFO L225 Difference]: With dead ends: 10963 [2018-10-24 21:31:35,262 INFO L226 Difference]: Without dead ends: 7282 [2018-10-24 21:31:35,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:31:35,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-10-24 21:31:35,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-10-24 21:31:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-10-24 21:31:35,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10520 transitions. [2018-10-24 21:31:35,491 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10520 transitions. Word has length 134 [2018-10-24 21:31:35,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:35,492 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 10520 transitions. [2018-10-24 21:31:35,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:31:35,492 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10520 transitions. [2018-10-24 21:31:35,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-24 21:31:35,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:35,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:35,497 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:35,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:35,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1690050436, now seen corresponding path program 1 times [2018-10-24 21:31:35,498 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:35,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:35,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:35,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:35,499 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:35,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:35,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:31:35,686 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:35,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:31:35,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:31:35,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:31:35,689 INFO L87 Difference]: Start difference. First operand 7175 states and 10520 transitions. Second operand 3 states. [2018-10-24 21:31:41,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:41,788 INFO L93 Difference]: Finished difference Result 21003 states and 32063 transitions. [2018-10-24 21:31:41,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:31:41,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2018-10-24 21:31:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:41,856 INFO L225 Difference]: With dead ends: 21003 [2018-10-24 21:31:41,856 INFO L226 Difference]: Without dead ends: 13834 [2018-10-24 21:31:41,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:31:41,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13834 states. [2018-10-24 21:31:42,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13834 to 13825. [2018-10-24 21:31:42,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13825 states. [2018-10-24 21:31:42,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13825 states to 13825 states and 19394 transitions. [2018-10-24 21:31:42,392 INFO L78 Accepts]: Start accepts. Automaton has 13825 states and 19394 transitions. Word has length 178 [2018-10-24 21:31:42,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:42,393 INFO L481 AbstractCegarLoop]: Abstraction has 13825 states and 19394 transitions. [2018-10-24 21:31:42,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:31:42,394 INFO L276 IsEmpty]: Start isEmpty. Operand 13825 states and 19394 transitions. [2018-10-24 21:31:42,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-24 21:31:42,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:42,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:42,400 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:42,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:42,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1829231100, now seen corresponding path program 1 times [2018-10-24 21:31:42,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:42,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:42,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:42,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:42,402 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:42,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:42,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:31:42,701 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:42,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:31:42,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:31:42,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:31:42,702 INFO L87 Difference]: Start difference. First operand 13825 states and 19394 transitions. Second operand 4 states. [2018-10-24 21:31:51,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:51,818 INFO L93 Difference]: Finished difference Result 31681 states and 44253 transitions. [2018-10-24 21:31:51,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:31:51,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2018-10-24 21:31:51,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:51,877 INFO L225 Difference]: With dead ends: 31681 [2018-10-24 21:31:51,877 INFO L226 Difference]: Without dead ends: 17862 [2018-10-24 21:31:51,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 21:31:51,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17862 states. [2018-10-24 21:31:52,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17862 to 17861. [2018-10-24 21:31:52,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17861 states. [2018-10-24 21:31:52,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17861 states to 17861 states and 22138 transitions. [2018-10-24 21:31:52,471 INFO L78 Accepts]: Start accepts. Automaton has 17861 states and 22138 transitions. Word has length 183 [2018-10-24 21:31:52,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:52,472 INFO L481 AbstractCegarLoop]: Abstraction has 17861 states and 22138 transitions. [2018-10-24 21:31:52,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:31:52,472 INFO L276 IsEmpty]: Start isEmpty. Operand 17861 states and 22138 transitions. [2018-10-24 21:31:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-24 21:31:52,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:52,481 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, 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] [2018-10-24 21:31:52,482 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:52,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:52,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1374780002, now seen corresponding path program 1 times [2018-10-24 21:31:52,482 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:52,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:52,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:52,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:52,484 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:52,808 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:31:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:53,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:31:53,191 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:31:53,194 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-10-24 21:31:53,196 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], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3023], [3025], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3120], [3121], [3125], [3129], [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], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 21:31:53,293 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:31:53,293 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:31:55,895 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:32:00,756 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:32:00,758 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:32:00,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:00,791 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:32:05,400 INFO L232 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 71.85% of their original sizes. [2018-10-24 21:32:05,401 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:32:07,023 INFO L413 sIntCurrentIteration]: We have 252 unified AI predicates [2018-10-24 21:32:07,023 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:32:07,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:32:07,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-24 21:32:07,024 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:32:07,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 21:32:07,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 21:32:07,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 21:32:07,026 INFO L87 Difference]: Start difference. First operand 17861 states and 22138 transitions. Second operand 11 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown