java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:38:10,730 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:38:10,733 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:38:10,757 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:38:10,758 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:38:10,759 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:38:10,760 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:38:10,762 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:38:10,764 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:38:10,765 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:38:10,766 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:38:10,766 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:38:10,767 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:38:10,768 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:38:10,769 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:38:10,770 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:38:10,771 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:38:10,773 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:38:10,775 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:38:10,777 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:38:10,778 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:38:10,779 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:38:10,782 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:38:10,782 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:38:10,782 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:38:10,783 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:38:10,784 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:38:10,785 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:38:10,786 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:38:10,787 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:38:10,788 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:38:10,788 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:38:10,789 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:38:10,789 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:38:10,790 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:38:10,791 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:38:10,791 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:38:10,814 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:38:10,814 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:38:10,817 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:38:10,817 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:38:10,817 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:38:10,817 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:38:10,818 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:38:10,818 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:38:10,818 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:38:10,818 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:38:10,818 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:38:10,819 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:38:10,819 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:38:10,819 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:38:10,820 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:38:10,820 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:38:10,820 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:38:10,820 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:38:10,820 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:38:10,821 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:38:10,821 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:38:10,821 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:38:10,821 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:38:10,821 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:38:10,822 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:38:10,822 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:38:10,822 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:38:10,822 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:38:10,823 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:38:10,823 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:38:10,823 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:38:10,823 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:38:10,823 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:38:10,824 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:38:10,888 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:38:10,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:38:10,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:38:10,915 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:38:10,915 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:38:10,916 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c [2018-10-27 14:38:10,983 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/517a19e2f/fb9b86922d584b0d8a90a978344ee2b4/FLAG5365d8d44 [2018-10-27 14:38:11,717 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:38:11,718 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c [2018-10-27 14:38:11,748 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/517a19e2f/fb9b86922d584b0d8a90a978344ee2b4/FLAG5365d8d44 [2018-10-27 14:38:11,769 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/517a19e2f/fb9b86922d584b0d8a90a978344ee2b4 [2018-10-27 14:38:11,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:38:11,786 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:38:11,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:38:11,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:38:11,793 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:38:11,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:38:11" (1/1) ... [2018-10-27 14:38:11,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309cd1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:11, skipping insertion in model container [2018-10-27 14:38:11,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:38:11" (1/1) ... [2018-10-27 14:38:11,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:38:11,919 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:38:12,817 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:38:12,821 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:38:13,117 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:38:13,139 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:38:13,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13 WrapperNode [2018-10-27 14:38:13,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:38:13,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:38:13,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:38:13,141 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:38:13,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2018-10-27 14:38:13,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2018-10-27 14:38:13,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:38:13,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:38:13,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:38:13,538 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:38:13,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2018-10-27 14:38:13,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2018-10-27 14:38:13,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2018-10-27 14:38:13,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2018-10-27 14:38:13,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2018-10-27 14:38:13,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2018-10-27 14:38:13,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... [2018-10-27 14:38:13,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:38:13,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:38:13,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:38:13,751 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:38:13,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:38:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:38:13,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:38:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:38:13,826 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:38:13,826 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:38:13,827 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:38:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:38:13,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:38:13,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:38:13,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:38:24,254 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:38:24,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:38:24 BoogieIcfgContainer [2018-10-27 14:38:24,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:38:24,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:38:24,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:38:24,260 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:38:24,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:38:11" (1/3) ... [2018-10-27 14:38:24,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1b73d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:38:24, skipping insertion in model container [2018-10-27 14:38:24,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:13" (2/3) ... [2018-10-27 14:38:24,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1b73d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:38:24, skipping insertion in model container [2018-10-27 14:38:24,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:38:24" (3/3) ... [2018-10-27 14:38:24,264 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label46_true-unreach-call.c [2018-10-27 14:38:24,275 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:38:24,285 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:38:24,303 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:38:24,345 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:38:24,346 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:38:24,346 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:38:24,346 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:38:24,346 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:38:24,346 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:38:24,346 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:38:24,347 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:38:24,381 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 14:38:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-27 14:38:24,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:38:24,392 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] [2018-10-27 14:38:24,395 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:38:24,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:38:24,402 INFO L82 PathProgramCache]: Analyzing trace with hash -171109996, now seen corresponding path program 1 times [2018-10-27 14:38:24,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:38:24,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:38:24,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:38:24,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:38:24,466 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:38:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:38:24,892 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:38:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:38:24,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:38:24,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 14:38:24,994 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:38:25,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 14:38:25,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 14:38:25,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:38:25,019 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-27 14:38:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:38:29,851 INFO L93 Difference]: Finished difference Result 1198 states and 2158 transitions. [2018-10-27 14:38:29,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 14:38:29,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-10-27 14:38:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:38:29,878 INFO L225 Difference]: With dead ends: 1198 [2018-10-27 14:38:29,878 INFO L226 Difference]: Without dead ends: 758 [2018-10-27 14:38:29,890 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:38:29,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2018-10-27 14:38:29,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2018-10-27 14:38:29,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2018-10-27 14:38:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1328 transitions. [2018-10-27 14:38:29,985 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1328 transitions. Word has length 50 [2018-10-27 14:38:29,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:38:29,985 INFO L481 AbstractCegarLoop]: Abstraction has 754 states and 1328 transitions. [2018-10-27 14:38:29,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 14:38:29,986 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1328 transitions. [2018-10-27 14:38:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-27 14:38:29,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:38:29,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:38:29,994 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:38:29,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:38:29,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1340083984, now seen corresponding path program 1 times [2018-10-27 14:38:29,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:38:29,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:38:29,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:38:29,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:38:29,996 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:38:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:38:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:38:30,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:38:30,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 14:38:30,225 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:38:30,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 14:38:30,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 14:38:30,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 14:38:30,228 INFO L87 Difference]: Start difference. First operand 754 states and 1328 transitions. Second operand 5 states. [2018-10-27 14:38:37,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:38:37,599 INFO L93 Difference]: Finished difference Result 2229 states and 3961 transitions. [2018-10-27 14:38:37,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 14:38:37,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-10-27 14:38:37,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:38:37,618 INFO L225 Difference]: With dead ends: 2229 [2018-10-27 14:38:37,619 INFO L226 Difference]: Without dead ends: 1481 [2018-10-27 14:38:37,623 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 [2018-10-27 14:38:37,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2018-10-27 14:38:37,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1449. [2018-10-27 14:38:37,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2018-10-27 14:38:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2254 transitions. [2018-10-27 14:38:37,721 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2254 transitions. Word has length 124 [2018-10-27 14:38:37,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:38:37,721 INFO L481 AbstractCegarLoop]: Abstraction has 1449 states and 2254 transitions. [2018-10-27 14:38:37,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 14:38:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2254 transitions. [2018-10-27 14:38:37,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-27 14:38:37,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:38:37,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:38:37,728 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:38:37,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:38:37,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1528606616, now seen corresponding path program 1 times [2018-10-27 14:38:37,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:38:37,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:38:37,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:38:37,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:38:37,730 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:38:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:38:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:38:38,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:38:38,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:38:38,009 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:38:38,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:38:38,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:38:38,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:38:38,011 INFO L87 Difference]: Start difference. First operand 1449 states and 2254 transitions. Second operand 6 states. [2018-10-27 14:38:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:38:47,612 INFO L93 Difference]: Finished difference Result 4188 states and 6605 transitions. [2018-10-27 14:38:47,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:38:47,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-27 14:38:47,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:38:47,634 INFO L225 Difference]: With dead ends: 4188 [2018-10-27 14:38:47,634 INFO L226 Difference]: Without dead ends: 2745 [2018-10-27 14:38:47,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:38:47,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2018-10-27 14:38:47,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2711. [2018-10-27 14:38:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2018-10-27 14:38:47,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3819 transitions. [2018-10-27 14:38:47,724 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3819 transitions. Word has length 136 [2018-10-27 14:38:47,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:38:47,724 INFO L481 AbstractCegarLoop]: Abstraction has 2711 states and 3819 transitions. [2018-10-27 14:38:47,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:38:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3819 transitions. [2018-10-27 14:38:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-27 14:38:47,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:38:47,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:38:47,728 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:38:47,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:38:47,728 INFO L82 PathProgramCache]: Analyzing trace with hash -929559410, now seen corresponding path program 1 times [2018-10-27 14:38:47,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:38:47,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:38:47,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:38:47,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:38:47,729 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:38:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:38:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:38:47,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:38:47,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:38:47,977 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:38:47,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:38:47,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:38:47,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:38:47,979 INFO L87 Difference]: Start difference. First operand 2711 states and 3819 transitions. Second operand 6 states. [2018-10-27 14:38:55,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:38:55,699 INFO L93 Difference]: Finished difference Result 6682 states and 9546 transitions. [2018-10-27 14:38:55,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:38:55,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-27 14:38:55,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:38:55,723 INFO L225 Difference]: With dead ends: 6682 [2018-10-27 14:38:55,724 INFO L226 Difference]: Without dead ends: 3977 [2018-10-27 14:38:55,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:38:55,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2018-10-27 14:38:55,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3953. [2018-10-27 14:38:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3953 states. [2018-10-27 14:38:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5247 transitions. [2018-10-27 14:38:55,846 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 5247 transitions. Word has length 137 [2018-10-27 14:38:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:38:55,846 INFO L481 AbstractCegarLoop]: Abstraction has 3953 states and 5247 transitions. [2018-10-27 14:38:55,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:38:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 5247 transitions. [2018-10-27 14:38:55,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-27 14:38:55,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:38:55,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:38:55,851 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:38:55,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:38:55,851 INFO L82 PathProgramCache]: Analyzing trace with hash -470998967, now seen corresponding path program 1 times [2018-10-27 14:38:55,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:38:55,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:38:55,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:38:55,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:38:55,853 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:38:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:38:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:38:56,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:38:56,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:38:56,083 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:38:56,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:38:56,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:38:56,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:38:56,085 INFO L87 Difference]: Start difference. First operand 3953 states and 5247 transitions. Second operand 6 states. [2018-10-27 14:39:08,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:39:08,736 INFO L93 Difference]: Finished difference Result 14072 states and 19014 transitions. [2018-10-27 14:39:08,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 14:39:08,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-10-27 14:39:08,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:39:08,794 INFO L225 Difference]: With dead ends: 14072 [2018-10-27 14:39:08,794 INFO L226 Difference]: Without dead ends: 10125 [2018-10-27 14:39:08,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 14:39:08,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10125 states. [2018-10-27 14:39:09,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10125 to 9916. [2018-10-27 14:39:09,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9916 states. [2018-10-27 14:39:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9916 states to 9916 states and 12557 transitions. [2018-10-27 14:39:09,071 INFO L78 Accepts]: Start accepts. Automaton has 9916 states and 12557 transitions. Word has length 177 [2018-10-27 14:39:09,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:39:09,072 INFO L481 AbstractCegarLoop]: Abstraction has 9916 states and 12557 transitions. [2018-10-27 14:39:09,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:39:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 9916 states and 12557 transitions. [2018-10-27 14:39:09,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-27 14:39:09,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:39:09,081 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:39:09,081 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:39:09,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:39:09,082 INFO L82 PathProgramCache]: Analyzing trace with hash 933056982, now seen corresponding path program 1 times [2018-10-27 14:39:09,082 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:39:09,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:39:09,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:39:09,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:39:09,083 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:39:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:39:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-27 14:39:09,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:39:09,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:39:09,374 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:39:09,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:39:09,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:39:09,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:39:09,377 INFO L87 Difference]: Start difference. First operand 9916 states and 12557 transitions. Second operand 4 states. [2018-10-27 14:39:15,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:39:15,392 INFO L93 Difference]: Finished difference Result 26048 states and 34184 transitions. [2018-10-27 14:39:15,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:39:15,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2018-10-27 14:39:15,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:39:15,464 INFO L225 Difference]: With dead ends: 26048 [2018-10-27 14:39:15,465 INFO L226 Difference]: Without dead ends: 16138 [2018-10-27 14:39:15,513 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 [2018-10-27 14:39:15,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16138 states. [2018-10-27 14:39:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16138 to 15819. [2018-10-27 14:39:15,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15819 states. [2018-10-27 14:39:15,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15819 states to 15819 states and 19538 transitions. [2018-10-27 14:39:15,887 INFO L78 Accepts]: Start accepts. Automaton has 15819 states and 19538 transitions. Word has length 205 [2018-10-27 14:39:15,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:39:15,888 INFO L481 AbstractCegarLoop]: Abstraction has 15819 states and 19538 transitions. [2018-10-27 14:39:15,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:39:15,888 INFO L276 IsEmpty]: Start isEmpty. Operand 15819 states and 19538 transitions. [2018-10-27 14:39:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-27 14:39:15,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:39:15,900 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:39:15,900 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:39:15,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:39:15,901 INFO L82 PathProgramCache]: Analyzing trace with hash -75498616, now seen corresponding path program 1 times [2018-10-27 14:39:15,901 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:39:15,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:39:15,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:39:15,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:39:15,907 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:39:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:39:16,170 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-10-27 14:39:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-27 14:39:16,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:39:16,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 14:39:16,198 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:39:16,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 14:39:16,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 14:39:16,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:39:16,199 INFO L87 Difference]: Start difference. First operand 15819 states and 19538 transitions. Second operand 3 states. [2018-10-27 14:39:20,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:39:20,930 INFO L93 Difference]: Finished difference Result 36397 states and 46181 transitions. [2018-10-27 14:39:20,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 14:39:20,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2018-10-27 14:39:20,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:39:21,022 INFO L225 Difference]: With dead ends: 36397 [2018-10-27 14:39:21,022 INFO L226 Difference]: Without dead ends: 20584 [2018-10-27 14:39:21,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:39:21,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20584 states. [2018-10-27 14:39:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20584 to 20530. [2018-10-27 14:39:21,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20530 states. [2018-10-27 14:39:21,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20530 states to 20530 states and 25907 transitions. [2018-10-27 14:39:21,542 INFO L78 Accepts]: Start accepts. Automaton has 20530 states and 25907 transitions. Word has length 218 [2018-10-27 14:39:21,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:39:21,542 INFO L481 AbstractCegarLoop]: Abstraction has 20530 states and 25907 transitions. [2018-10-27 14:39:21,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 14:39:21,543 INFO L276 IsEmpty]: Start isEmpty. Operand 20530 states and 25907 transitions. [2018-10-27 14:39:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-27 14:39:21,557 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:39:21,558 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:39:21,558 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:39:21,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:39:21,559 INFO L82 PathProgramCache]: Analyzing trace with hash 976466900, now seen corresponding path program 1 times [2018-10-27 14:39:21,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:39:21,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:39:21,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:39:21,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:39:21,560 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:39:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:39:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 14:39:22,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:39:22,237 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:39:22,239 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2018-10-27 14:39:22,241 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 14:39:22,301 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:39:22,301 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:39:22,784 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 14:39:23,497 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:39:23,500 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 14:39:23,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:39:23,533 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:39:24,488 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 77.96% of their original sizes. [2018-10-27 14:39:24,496 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:39:24,846 INFO L415 sIntCurrentIteration]: We unified 230 AI predicates to 230 [2018-10-27 14:39:24,846 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:39:24,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:39:24,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-27 14:39:24,851 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:39:24,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 14:39:24,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 14:39:24,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 14:39:24,852 INFO L87 Difference]: Start difference. First operand 20530 states and 25907 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown