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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:50:51,765 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:50:51,768 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:50:51,780 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:50:51,781 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:50:51,782 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:50:51,783 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:50:51,785 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:50:51,786 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:50:51,787 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:50:51,788 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:50:51,788 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:50:51,789 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:50:51,791 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:50:51,795 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:50:51,796 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:50:51,797 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:50:51,798 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:50:51,800 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:50:51,802 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:50:51,803 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:50:51,804 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:50:51,808 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:50:51,809 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:50:51,809 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:50:51,810 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:50:51,814 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:50:51,815 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:50:51,816 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:50:51,819 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:50:51,819 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:50:51,820 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:50:51,820 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:50:51,820 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:50:51,823 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:50:51,824 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:50:51,824 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:50:51,857 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:50:51,857 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:50:51,858 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:50:51,858 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:50:51,858 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:50:51,859 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:50:51,859 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:50:51,859 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:50:51,859 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:50:51,859 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:50:51,860 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:50:51,860 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:50:51,860 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:50:51,860 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:50:51,861 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:50:51,861 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:50:51,861 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:50:51,861 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:50:51,862 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:50:51,862 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:50:51,863 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:50:51,863 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:50:51,863 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:50:51,863 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:50:51,863 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:50:51,863 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:50:51,864 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:50:51,864 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:50:51,865 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:50:51,865 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:50:51,865 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:50:51,865 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:50:51,865 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:50:51,865 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:50:51,866 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:50:51,866 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:50:51,933 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:50:51,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:50:51,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:50:51,951 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:50:51,952 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:50:51,952 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label59_true-unreach-call.c [2018-10-27 07:50:52,021 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21c58812f/69cfb3cadd334ba081bde09da998494f/FLAGe5f676c68 [2018-10-27 07:50:52,852 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:50:52,853 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label59_true-unreach-call.c [2018-10-27 07:50:52,884 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21c58812f/69cfb3cadd334ba081bde09da998494f/FLAGe5f676c68 [2018-10-27 07:50:52,901 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/21c58812f/69cfb3cadd334ba081bde09da998494f [2018-10-27 07:50:52,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:50:52,915 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:50:52,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:50:52,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:50:52,921 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:50:52,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:50:52" (1/1) ... [2018-10-27 07:50:52,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708368ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:52, skipping insertion in model container [2018-10-27 07:50:52,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:50:52" (1/1) ... [2018-10-27 07:50:52,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:50:53,085 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:50:54,510 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:50:54,515 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:50:55,120 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:50:55,155 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:50:55,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:55 WrapperNode [2018-10-27 07:50:55,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:50:55,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:50:55,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:50:55,158 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:50:55,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:55" (1/1) ... [2018-10-27 07:50:55,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:55" (1/1) ... [2018-10-27 07:50:55,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:50:55,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:50:55,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:50:55,694 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:50:55,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:55" (1/1) ... [2018-10-27 07:50:55,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:55" (1/1) ... [2018-10-27 07:50:55,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:55" (1/1) ... [2018-10-27 07:50:55,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:55" (1/1) ... [2018-10-27 07:50:55,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:55" (1/1) ... [2018-10-27 07:50:55,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:55" (1/1) ... [2018-10-27 07:50:55,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:55" (1/1) ... [2018-10-27 07:50:55,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:50:55,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:50:55,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:50:55,935 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:50:55,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:55" (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 07:50:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:50:56,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:50:56,006 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 07:50:56,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 07:50:56,007 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 07:50:56,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 07:50:56,007 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 07:50:56,007 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 07:50:56,008 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:50:56,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:50:56,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:50:56,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:50:56,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:50:56,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:51:07,371 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:51:07,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:51:07 BoogieIcfgContainer [2018-10-27 07:51:07,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:51:07,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:51:07,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:51:07,377 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:51:07,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:50:52" (1/3) ... [2018-10-27 07:51:07,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae90da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:51:07, skipping insertion in model container [2018-10-27 07:51:07,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:55" (2/3) ... [2018-10-27 07:51:07,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae90da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:51:07, skipping insertion in model container [2018-10-27 07:51:07,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:51:07" (3/3) ... [2018-10-27 07:51:07,381 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label59_true-unreach-call.c [2018-10-27 07:51:07,391 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:51:07,401 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:51:07,419 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:51:07,465 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:51:07,465 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:51:07,465 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:51:07,466 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:51:07,466 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:51:07,466 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:51:07,466 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:51:07,466 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:51:07,505 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 07:51:07,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-27 07:51:07,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:51:07,515 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] [2018-10-27 07:51:07,518 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:51:07,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:51:07,523 INFO L82 PathProgramCache]: Analyzing trace with hash -320389013, now seen corresponding path program 1 times [2018-10-27 07:51:07,526 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:51:07,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:07,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:51:07,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:07,577 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:51:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:51:08,017 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:51:08,126 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 07:51:08,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:51:08,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:51:08,129 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:51:08,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:51:08,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:51:08,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:51:08,157 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 07:51:15,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:51:15,975 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 07:51:15,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:51:15,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-10-27 07:51:15,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:51:16,011 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 07:51:16,011 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 07:51:16,025 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 07:51:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 07:51:16,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 07:51:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 07:51:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3014 transitions. [2018-10-27 07:51:16,192 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3014 transitions. Word has length 51 [2018-10-27 07:51:16,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:51:16,193 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 3014 transitions. [2018-10-27 07:51:16,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:51:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3014 transitions. [2018-10-27 07:51:16,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 07:51:16,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:51:16,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:16,202 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:51:16,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:51:16,202 INFO L82 PathProgramCache]: Analyzing trace with hash -66311172, now seen corresponding path program 1 times [2018-10-27 07:51:16,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:51:16,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:16,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:51:16,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:16,204 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:51:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:51:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:51:16,706 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:51:16,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 07:51:16,706 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:51:16,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 07:51:16,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 07:51:16,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-27 07:51:16,711 INFO L87 Difference]: Start difference. First operand 1604 states and 3014 transitions. Second operand 5 states. [2018-10-27 07:51:28,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:51:28,492 INFO L93 Difference]: Finished difference Result 4873 states and 9168 transitions. [2018-10-27 07:51:28,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:51:28,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-10-27 07:51:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:51:28,517 INFO L225 Difference]: With dead ends: 4873 [2018-10-27 07:51:28,517 INFO L226 Difference]: Without dead ends: 3275 [2018-10-27 07:51:28,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:51:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-10-27 07:51:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-10-27 07:51:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-10-27 07:51:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 5443 transitions. [2018-10-27 07:51:28,673 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 5443 transitions. Word has length 121 [2018-10-27 07:51:28,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:51:28,674 INFO L481 AbstractCegarLoop]: Abstraction has 3241 states and 5443 transitions. [2018-10-27 07:51:28,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 07:51:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 5443 transitions. [2018-10-27 07:51:28,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-27 07:51:28,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:51:28,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:28,687 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:51:28,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:51:28,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1119739496, now seen corresponding path program 1 times [2018-10-27 07:51:28,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:51:28,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:28,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:51:28,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:28,689 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:51:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:51:29,005 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:51:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:51:29,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:51:29,068 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:51:29,069 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 128 with the following transitions: [2018-10-27 07:51:29,071 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2175], [2177], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 07:51:29,131 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:51:29,131 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:51:29,785 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:51:29,787 INFO L272 AbstractInterpreter]: Visited 84 different actions 160 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 07:51:29,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:51:29,836 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:51:29,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:51:29,836 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:51:29,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:51:29,855 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:51:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:51:29,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:51:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:51:30,174 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:51:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:51:30,566 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:51:30,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-10-27 07:51:30,567 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:51:30,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:51:30,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:51:30,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:51:30,568 INFO L87 Difference]: Start difference. First operand 3241 states and 5443 transitions. Second operand 3 states. [2018-10-27 07:51:37,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:51:37,932 INFO L93 Difference]: Finished difference Result 9583 states and 16414 transitions. [2018-10-27 07:51:37,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:51:37,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2018-10-27 07:51:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:51:37,979 INFO L225 Difference]: With dead ends: 9583 [2018-10-27 07:51:37,979 INFO L226 Difference]: Without dead ends: 6348 [2018-10-27 07:51:37,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 254 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:51:38,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2018-10-27 07:51:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6348. [2018-10-27 07:51:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6348 states. [2018-10-27 07:51:38,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6348 states to 6348 states and 9511 transitions. [2018-10-27 07:51:38,191 INFO L78 Accepts]: Start accepts. Automaton has 6348 states and 9511 transitions. Word has length 127 [2018-10-27 07:51:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:51:38,192 INFO L481 AbstractCegarLoop]: Abstraction has 6348 states and 9511 transitions. [2018-10-27 07:51:38,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:51:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 6348 states and 9511 transitions. [2018-10-27 07:51:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-27 07:51:38,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:51:38,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:38,196 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:51:38,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:51:38,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1996073879, now seen corresponding path program 1 times [2018-10-27 07:51:38,197 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:51:38,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:38,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:51:38,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:38,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:51:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:51:38,440 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:51:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:51:38,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:51:38,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:51:38,487 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:51:38,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:51:38,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:51:38,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:51:38,489 INFO L87 Difference]: Start difference. First operand 6348 states and 9511 transitions. Second operand 6 states. [2018-10-27 07:51:48,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:51:48,066 INFO L93 Difference]: Finished difference Result 15974 states and 23458 transitions. [2018-10-27 07:51:48,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:51:48,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-27 07:51:48,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:51:48,117 INFO L225 Difference]: With dead ends: 15974 [2018-10-27 07:51:48,118 INFO L226 Difference]: Without dead ends: 9632 [2018-10-27 07:51:48,145 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 07:51:48,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9632 states. [2018-10-27 07:51:48,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9632 to 9612. [2018-10-27 07:51:48,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9612 states. [2018-10-27 07:51:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9612 states to 9612 states and 13075 transitions. [2018-10-27 07:51:48,382 INFO L78 Accepts]: Start accepts. Automaton has 9612 states and 13075 transitions. Word has length 136 [2018-10-27 07:51:48,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:51:48,382 INFO L481 AbstractCegarLoop]: Abstraction has 9612 states and 13075 transitions. [2018-10-27 07:51:48,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:51:48,383 INFO L276 IsEmpty]: Start isEmpty. Operand 9612 states and 13075 transitions. [2018-10-27 07:51:48,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-27 07:51:48,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:51:48,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:48,386 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:51:48,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:51:48,387 INFO L82 PathProgramCache]: Analyzing trace with hash 977865397, now seen corresponding path program 1 times [2018-10-27 07:51:48,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:51:48,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:48,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:51:48,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:48,388 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:51:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:51:48,679 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:51:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:51:49,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:51:49,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:51:49,084 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:51:49,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:51:49,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:51:49,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:51:49,087 INFO L87 Difference]: Start difference. First operand 9612 states and 13075 transitions. Second operand 6 states. [2018-10-27 07:52:01,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:52:01,126 INFO L93 Difference]: Finished difference Result 26233 states and 36750 transitions. [2018-10-27 07:52:01,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:52:01,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-10-27 07:52:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:52:01,210 INFO L225 Difference]: With dead ends: 26233 [2018-10-27 07:52:01,210 INFO L226 Difference]: Without dead ends: 16627 [2018-10-27 07:52:01,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:52:01,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16627 states. [2018-10-27 07:52:01,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16627 to 16383. [2018-10-27 07:52:01,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16383 states. [2018-10-27 07:52:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16383 states to 16383 states and 21980 transitions. [2018-10-27 07:52:01,969 INFO L78 Accepts]: Start accepts. Automaton has 16383 states and 21980 transitions. Word has length 158 [2018-10-27 07:52:01,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:52:01,969 INFO L481 AbstractCegarLoop]: Abstraction has 16383 states and 21980 transitions. [2018-10-27 07:52:01,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:52:01,970 INFO L276 IsEmpty]: Start isEmpty. Operand 16383 states and 21980 transitions. [2018-10-27 07:52:01,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-27 07:52:01,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:52:01,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:01,976 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:52:01,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:52:01,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1902407537, now seen corresponding path program 1 times [2018-10-27 07:52:01,976 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:52:01,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:52:01,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:52:01,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:52:01,978 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:52:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:52:02,276 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:52:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:52:02,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:52:02,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:52:02,654 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:52:02,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:52:02,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:52:02,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:52:02,664 INFO L87 Difference]: Start difference. First operand 16383 states and 21980 transitions. Second operand 6 states. [2018-10-27 07:52:13,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:52:13,656 INFO L93 Difference]: Finished difference Result 43183 states and 61955 transitions. [2018-10-27 07:52:13,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:52:13,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-10-27 07:52:13,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:52:13,779 INFO L225 Difference]: With dead ends: 43183 [2018-10-27 07:52:13,779 INFO L226 Difference]: Without dead ends: 26806 [2018-10-27 07:52:13,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:52:13,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26806 states. [2018-10-27 07:52:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26806 to 26486. [2018-10-27 07:52:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26486 states. [2018-10-27 07:52:14,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26486 states to 26486 states and 35504 transitions. [2018-10-27 07:52:14,757 INFO L78 Accepts]: Start accepts. Automaton has 26486 states and 35504 transitions. Word has length 172 [2018-10-27 07:52:14,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:52:14,757 INFO L481 AbstractCegarLoop]: Abstraction has 26486 states and 35504 transitions. [2018-10-27 07:52:14,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:52:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 26486 states and 35504 transitions. [2018-10-27 07:52:14,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-27 07:52:14,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:52:14,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:14,764 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:52:14,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:52:14,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1379065187, now seen corresponding path program 1 times [2018-10-27 07:52:14,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:52:14,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:52:14,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:52:14,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:52:14,766 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:52:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:52:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:52:15,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:52:15,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:52:15,328 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:52:15,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:52:15,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:52:15,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:52:15,330 INFO L87 Difference]: Start difference. First operand 26486 states and 35504 transitions. Second operand 6 states. [2018-10-27 07:52:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:52:34,378 INFO L93 Difference]: Finished difference Result 103980 states and 154114 transitions. [2018-10-27 07:52:34,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:52:34,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-10-27 07:52:34,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:52:34,669 INFO L225 Difference]: With dead ends: 103980 [2018-10-27 07:52:34,669 INFO L226 Difference]: Without dead ends: 77500 [2018-10-27 07:52:34,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:52:34,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77500 states. [2018-10-27 07:52:36,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77500 to 77354. [2018-10-27 07:52:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77354 states. [2018-10-27 07:52:36,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77354 states to 77354 states and 106162 transitions. [2018-10-27 07:52:36,440 INFO L78 Accepts]: Start accepts. Automaton has 77354 states and 106162 transitions. Word has length 178 [2018-10-27 07:52:36,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:52:36,440 INFO L481 AbstractCegarLoop]: Abstraction has 77354 states and 106162 transitions. [2018-10-27 07:52:36,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:52:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 77354 states and 106162 transitions. [2018-10-27 07:52:36,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-27 07:52:36,444 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:52:36,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:36,445 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:52:36,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:52:36,445 INFO L82 PathProgramCache]: Analyzing trace with hash 73089436, now seen corresponding path program 1 times [2018-10-27 07:52:36,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:52:36,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:52:36,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:52:36,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:52:36,447 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:52:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:52:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:52:37,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:52:37,051 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:52:37,052 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 202 with the following transitions: [2018-10-27 07:52:37,052 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2175], [2177], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 07:52:37,060 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:52:37,061 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:52:37,805 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:52:37,805 INFO L272 AbstractInterpreter]: Visited 158 different actions 309 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 07:52:37,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:52:37,843 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:52:37,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:52:37,844 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:52:37,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:52:37,862 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:52:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:52:37,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:52:38,931 WARN L179 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 487 DAG size of output: 22 [2018-10-27 07:52:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:52:39,898 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:52:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:52:40,361 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:52:40,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-27 07:52:40,361 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:52:40,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:52:40,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:52:40,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-27 07:52:40,364 INFO L87 Difference]: Start difference. First operand 77354 states and 106162 transitions. Second operand 3 states. [2018-10-27 07:52:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:52:49,545 INFO L93 Difference]: Finished difference Result 182776 states and 256284 transitions. [2018-10-27 07:52:49,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:52:49,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2018-10-27 07:52:49,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:52:49,941 INFO L225 Difference]: With dead ends: 182776 [2018-10-27 07:52:49,941 INFO L226 Difference]: Without dead ends: 105428 [2018-10-27 07:52:50,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-27 07:52:50,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105428 states. [2018-10-27 07:52:52,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105428 to 105333. [2018-10-27 07:52:52,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105333 states. [2018-10-27 07:52:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105333 states to 105333 states and 141734 transitions. [2018-10-27 07:52:52,942 INFO L78 Accepts]: Start accepts. Automaton has 105333 states and 141734 transitions. Word has length 201 [2018-10-27 07:52:52,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:52:52,942 INFO L481 AbstractCegarLoop]: Abstraction has 105333 states and 141734 transitions. [2018-10-27 07:52:52,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:52:52,942 INFO L276 IsEmpty]: Start isEmpty. Operand 105333 states and 141734 transitions. [2018-10-27 07:52:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-27 07:52:52,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:52:52,948 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:52,949 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:52:52,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:52:52,949 INFO L82 PathProgramCache]: Analyzing trace with hash 733180128, now seen corresponding path program 1 times [2018-10-27 07:52:52,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:52:52,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:52:52,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:52:52,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:52:52,951 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:52:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:52:53,254 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:52:53,680 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:52:53,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:52:53,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:52:53,681 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:52:53,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:52:53,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:52:53,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:52:53,682 INFO L87 Difference]: Start difference. First operand 105333 states and 141734 transitions. Second operand 6 states. [2018-10-27 07:53:04,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:53:04,043 INFO L93 Difference]: Finished difference Result 256628 states and 367726 transitions. [2018-10-27 07:53:04,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:53:04,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 219 [2018-10-27 07:53:04,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:53:04,527 INFO L225 Difference]: With dead ends: 256628 [2018-10-27 07:53:04,527 INFO L226 Difference]: Without dead ends: 151301 [2018-10-27 07:53:04,691 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:53:04,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151301 states. [2018-10-27 07:53:06,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151301 to 150996. [2018-10-27 07:53:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150996 states. [2018-10-27 07:53:08,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150996 states to 150996 states and 208214 transitions. [2018-10-27 07:53:08,671 INFO L78 Accepts]: Start accepts. Automaton has 150996 states and 208214 transitions. Word has length 219 [2018-10-27 07:53:08,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:53:08,672 INFO L481 AbstractCegarLoop]: Abstraction has 150996 states and 208214 transitions. [2018-10-27 07:53:08,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:53:08,672 INFO L276 IsEmpty]: Start isEmpty. Operand 150996 states and 208214 transitions. [2018-10-27 07:53:08,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-27 07:53:08,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:53:08,678 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:53:08,678 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:53:08,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:53:08,679 INFO L82 PathProgramCache]: Analyzing trace with hash -88101080, now seen corresponding path program 1 times [2018-10-27 07:53:08,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:53:08,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:53:08,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:53:08,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:53:08,680 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:53:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:53:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:53:08,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:53:08,957 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:53:08,957 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-10-27 07:53:08,958 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2175], [2177], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2540], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 07:53:08,963 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:53:08,964 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:53:09,589 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:53:09,589 INFO L272 AbstractInterpreter]: Visited 124 different actions 367 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-27 07:53:09,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:53:09,628 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:53:09,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:53:09,628 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:53:09,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:53:09,641 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:53:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:53:09,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:53:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:53:10,141 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:53:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:53:10,363 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:53:10,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 07:53:10,363 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:53:10,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 07:53:10,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 07:53:10,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-27 07:53:10,365 INFO L87 Difference]: Start difference. First operand 150996 states and 208214 transitions. Second operand 9 states. [2018-10-27 07:53:44,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:53:44,986 INFO L93 Difference]: Finished difference Result 452094 states and 845200 transitions. [2018-10-27 07:53:44,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-27 07:53:44,987 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 242 [2018-10-27 07:53:44,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:53:46,585 INFO L225 Difference]: With dead ends: 452094 [2018-10-27 07:53:46,586 INFO L226 Difference]: Without dead ends: 249838 [2018-10-27 07:53:47,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 489 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2018-10-27 07:53:47,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249838 states. [2018-10-27 07:53:53,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249838 to 241971. [2018-10-27 07:53:53,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241971 states. [2018-10-27 07:53:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241971 states to 241971 states and 348875 transitions. [2018-10-27 07:53:56,059 INFO L78 Accepts]: Start accepts. Automaton has 241971 states and 348875 transitions. Word has length 242 [2018-10-27 07:53:56,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:53:56,059 INFO L481 AbstractCegarLoop]: Abstraction has 241971 states and 348875 transitions. [2018-10-27 07:53:56,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 07:53:56,060 INFO L276 IsEmpty]: Start isEmpty. Operand 241971 states and 348875 transitions. [2018-10-27 07:53:56,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-27 07:53:56,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:53:56,067 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:53:56,067 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:53:56,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:53:56,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1044267349, now seen corresponding path program 1 times [2018-10-27 07:53:56,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:53:56,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:53:56,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:53:56,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:53:56,069 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:53:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:53:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:53:56,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:53:56,480 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:53:56,480 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 286 with the following transitions: [2018-10-27 07:53:56,481 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2175], [2177], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2420], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2676], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 07:53:56,490 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:53:56,490 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:53:56,737 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:53:56,738 INFO L272 AbstractInterpreter]: Visited 154 different actions 154 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 07:53:56,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:53:56,777 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:53:57,296 INFO L227 lantSequenceWeakener]: Weakened 276 states. On average, predicates are now at 75.47% of their original sizes. [2018-10-27 07:53:57,296 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:53:57,533 INFO L415 sIntCurrentIteration]: We unified 284 AI predicates to 284 [2018-10-27 07:53:57,535 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:53:57,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:53:57,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-27 07:53:57,536 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:53:57,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:53:57,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:53:57,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:53:57,538 INFO L87 Difference]: Start difference. First operand 241971 states and 348875 transitions. Second operand 6 states. Received shutdown request... [2018-10-27 07:54:26,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:54:26,949 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 07:54:26,955 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 07:54:26,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:54:26 BoogieIcfgContainer [2018-10-27 07:54:26,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 07:54:26,956 INFO L168 Benchmark]: Toolchain (without parser) took 214042.39 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-27 07:54:26,957 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:54:26,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2240.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-27 07:54:26,958 INFO L168 Benchmark]: Boogie Procedure Inliner took 535.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 776.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-27 07:54:26,959 INFO L168 Benchmark]: Boogie Preprocessor took 241.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2018-10-27 07:54:26,960 INFO L168 Benchmark]: RCFGBuilder took 11437.52 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 187.2 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -209.3 MB). Peak memory consumption was 667.6 MB. Max. memory is 7.1 GB. [2018-10-27 07:54:26,961 INFO L168 Benchmark]: TraceAbstraction took 199581.90 ms. Allocated memory was 2.5 GB in the beginning and 5.1 GB in the end (delta: 2.6 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -391.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-27 07:54:26,967 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2240.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 535.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 776.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 241.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11437.52 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 187.2 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -209.3 MB). Peak memory consumption was 667.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199581.90 ms. Allocated memory was 2.5 GB in the beginning and 5.1 GB in the end (delta: 2.6 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -391.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 144). Cancelled while BasicCegarLoop was constructing difference of abstraction (241971states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (15014 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 199.5s OverallTime, 11 OverallIterations, 3 TraceHistogramMax, 166.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4406 SDtfs, 29266 SDslu, 1899 SDs, 0 SdLazy, 60026 SolverSat, 11707 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 115.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1529 GetRequests, 1444 SyntacticMatches, 9 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=241971occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.5s AbstIntTime, 4 AbstIntIterations, 1 AbstIntStrong, 0.99818782590139 AbsIntWeakeningRatio, 0.09507042253521127 AbsIntAvgWeakeningVarsNumRemoved, 17.489436619718308 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 19.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 9031 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 2460 NumberOfCodeBlocks, 2460 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3013 ConstructedInterpolants, 47 QuantifiedInterpolants, 2274784 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1111 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 17 InterpolantComputations, 11 PerfectInterpolantSequences, 1125/1193 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown