java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:43:43,844 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:43:43,848 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:43:43,863 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:43:43,864 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:43:43,865 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:43:43,866 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:43:43,868 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:43:43,870 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:43:43,871 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:43:43,872 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:43:43,872 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:43:43,873 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:43:43,874 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:43:43,875 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:43:43,876 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:43:43,877 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:43:43,879 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:43:43,881 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:43:43,883 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:43:43,884 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:43:43,885 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:43:43,887 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:43:43,887 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:43:43,888 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:43:43,889 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:43:43,890 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:43:43,891 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:43:43,891 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:43:43,893 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:43:43,893 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:43:43,894 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:43:43,894 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:43:43,894 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:43:43,895 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:43:43,896 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:43:43,896 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:43:43,912 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:43:43,912 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:43:43,913 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:43:43,913 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:43:43,913 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:43:43,914 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:43:43,914 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:43:43,914 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:43:43,914 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:43:43,914 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:43:43,915 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:43:43,915 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:43:43,915 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:43:43,916 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:43:43,916 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:43:43,916 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:43:43,916 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:43:43,917 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:43:43,917 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:43:43,917 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:43:43,917 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:43:43,917 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:43:43,918 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:43:43,919 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:43:43,919 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:43:43,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:43:43,920 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:43:43,920 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:43:43,920 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:43:43,920 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:43:43,920 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:43:43,921 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:43:43,921 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:43:43,921 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:43:43,921 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:43:43,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:43:43,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:43:44,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:43:44,004 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:43:44,005 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:43:44,006 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-11-12 16:43:44,074 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd4c1568a/ddcdcb9929864b769e1892db65c30e3c/FLAGaeae10d2e [2018-11-12 16:43:44,720 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:43:44,720 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-11-12 16:43:44,745 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd4c1568a/ddcdcb9929864b769e1892db65c30e3c/FLAGaeae10d2e [2018-11-12 16:43:44,764 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd4c1568a/ddcdcb9929864b769e1892db65c30e3c [2018-11-12 16:43:44,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:43:44,779 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:43:44,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:43:44,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:43:44,788 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:43:44,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:43:44" (1/1) ... [2018-11-12 16:43:44,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bbca245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:44, skipping insertion in model container [2018-11-12 16:43:44,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:43:44" (1/1) ... [2018-11-12 16:43:44,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:43:44,895 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:43:45,799 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:43:45,805 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:43:46,080 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:43:46,109 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:43:46,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:46 WrapperNode [2018-11-12 16:43:46,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:43:46,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:43:46,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:43:46,111 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:43:46,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:46" (1/1) ... [2018-11-12 16:43:46,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:46" (1/1) ... [2018-11-12 16:43:46,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:43:46,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:43:46,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:43:46,306 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:43:46,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:46" (1/1) ... [2018-11-12 16:43:46,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:46" (1/1) ... [2018-11-12 16:43:46,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:46" (1/1) ... [2018-11-12 16:43:46,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:46" (1/1) ... [2018-11-12 16:43:46,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:46" (1/1) ... [2018-11-12 16:43:46,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:46" (1/1) ... [2018-11-12 16:43:46,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:46" (1/1) ... [2018-11-12 16:43:46,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:43:46,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:43:46,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:43:46,503 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:43:46,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:43:46,585 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:43:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:43:46,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:43:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:43:46,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:43:46,586 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:43:46,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:43:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:43:46,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:43:46,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:43:46,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:43:52,863 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:43:52,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:43:52 BoogieIcfgContainer [2018-11-12 16:43:52,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:43:52,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:43:52,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:43:52,871 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:43:52,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:43:44" (1/3) ... [2018-11-12 16:43:52,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8636b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:43:52, skipping insertion in model container [2018-11-12 16:43:52,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:46" (2/3) ... [2018-11-12 16:43:52,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8636b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:43:52, skipping insertion in model container [2018-11-12 16:43:52,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:43:52" (3/3) ... [2018-11-12 16:43:52,875 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label30_false-unreach-call.c [2018-11-12 16:43:52,886 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:43:52,896 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:43:52,914 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:43:52,957 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:43:52,957 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:43:52,958 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:43:52,958 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:43:52,958 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:43:52,958 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:43:52,958 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:43:52,958 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:43:53,002 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 16:43:53,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-12 16:43:53,010 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:43:53,011 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] [2018-11-12 16:43:53,014 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:43:53,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:53,021 INFO L82 PathProgramCache]: Analyzing trace with hash 328599972, now seen corresponding path program 1 times [2018-11-12 16:43:53,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:43:53,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:53,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:53,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:53,071 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:43:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:43:53,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:43:53,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:43:53,459 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:43:53,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:43:53,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:43:53,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:43:53,487 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-11-12 16:43:59,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:43:59,491 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-11-12 16:43:59,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:43:59,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-12 16:43:59,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:43:59,521 INFO L225 Difference]: With dead ends: 1513 [2018-11-12 16:43:59,521 INFO L226 Difference]: Without dead ends: 1097 [2018-11-12 16:43:59,530 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:43:59,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-11-12 16:43:59,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2018-11-12 16:43:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-11-12 16:43:59,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1954 transitions. [2018-11-12 16:43:59,657 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1954 transitions. Word has length 22 [2018-11-12 16:43:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:43:59,658 INFO L480 AbstractCegarLoop]: Abstraction has 1097 states and 1954 transitions. [2018-11-12 16:43:59,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:43:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1954 transitions. [2018-11-12 16:43:59,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-12 16:43:59,664 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:43:59,665 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:43:59,665 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:43:59,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:59,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1272949813, now seen corresponding path program 1 times [2018-11-12 16:43:59,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:43:59,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:59,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:59,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:59,668 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:43:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:00,031 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:44:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:00,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:00,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:44:00,108 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:00,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:44:00,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:44:00,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:44:00,110 INFO L87 Difference]: Start difference. First operand 1097 states and 1954 transitions. Second operand 6 states. [2018-11-12 16:44:04,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:04,765 INFO L93 Difference]: Finished difference Result 3259 states and 5952 transitions. [2018-11-12 16:44:04,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:44:04,774 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-11-12 16:44:04,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:04,800 INFO L225 Difference]: With dead ends: 3259 [2018-11-12 16:44:04,800 INFO L226 Difference]: Without dead ends: 2168 [2018-11-12 16:44:04,807 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:44:04,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2018-11-12 16:44:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2142. [2018-11-12 16:44:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2018-11-12 16:44:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3739 transitions. [2018-11-12 16:44:04,914 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3739 transitions. Word has length 93 [2018-11-12 16:44:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:04,914 INFO L480 AbstractCegarLoop]: Abstraction has 2142 states and 3739 transitions. [2018-11-12 16:44:04,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:44:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3739 transitions. [2018-11-12 16:44:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-12 16:44:04,923 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:04,924 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:44:04,924 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:04,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:04,924 INFO L82 PathProgramCache]: Analyzing trace with hash 48893395, now seen corresponding path program 1 times [2018-11-12 16:44:04,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:04,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:04,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:04,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:04,927 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:05,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:05,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:44:05,158 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:05,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:44:05,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:44:05,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:44:05,160 INFO L87 Difference]: Start difference. First operand 2142 states and 3739 transitions. Second operand 6 states. [2018-11-12 16:44:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:09,996 INFO L93 Difference]: Finished difference Result 7053 states and 12688 transitions. [2018-11-12 16:44:09,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:44:09,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-11-12 16:44:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:10,034 INFO L225 Difference]: With dead ends: 7053 [2018-11-12 16:44:10,035 INFO L226 Difference]: Without dead ends: 4917 [2018-11-12 16:44:10,057 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:44:10,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2018-11-12 16:44:10,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 4877. [2018-11-12 16:44:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4877 states. [2018-11-12 16:44:10,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 7891 transitions. [2018-11-12 16:44:10,211 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 7891 transitions. Word has length 121 [2018-11-12 16:44:10,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:10,212 INFO L480 AbstractCegarLoop]: Abstraction has 4877 states and 7891 transitions. [2018-11-12 16:44:10,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:44:10,212 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 7891 transitions. [2018-11-12 16:44:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-12 16:44:10,218 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:10,218 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:44:10,219 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:10,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:10,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1031937393, now seen corresponding path program 1 times [2018-11-12 16:44:10,219 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:10,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:10,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:10,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:10,221 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:10,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:10,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:44:10,576 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:10,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:44:10,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:44:10,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:44:10,578 INFO L87 Difference]: Start difference. First operand 4877 states and 7891 transitions. Second operand 6 states. [2018-11-12 16:44:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:13,425 INFO L93 Difference]: Finished difference Result 11909 states and 19972 transitions. [2018-11-12 16:44:13,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:44:13,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-12 16:44:13,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:13,482 INFO L225 Difference]: With dead ends: 11909 [2018-11-12 16:44:13,482 INFO L226 Difference]: Without dead ends: 7038 [2018-11-12 16:44:13,507 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:44:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7038 states. [2018-11-12 16:44:13,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7038 to 6977. [2018-11-12 16:44:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2018-11-12 16:44:13,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 9942 transitions. [2018-11-12 16:44:13,738 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 9942 transitions. Word has length 139 [2018-11-12 16:44:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:13,739 INFO L480 AbstractCegarLoop]: Abstraction has 6977 states and 9942 transitions. [2018-11-12 16:44:13,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:44:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 9942 transitions. [2018-11-12 16:44:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-11-12 16:44:13,741 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:13,742 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:44:13,742 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:13,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:13,743 INFO L82 PathProgramCache]: Analyzing trace with hash 203002038, now seen corresponding path program 1 times [2018-11-12 16:44:13,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:13,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:13,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:13,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:13,744 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:14,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:14,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:44:14,148 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:14,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:44:14,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:44:14,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:44:14,150 INFO L87 Difference]: Start difference. First operand 6977 states and 9942 transitions. Second operand 6 states. [2018-11-12 16:44:17,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:17,974 INFO L93 Difference]: Finished difference Result 17709 states and 25496 transitions. [2018-11-12 16:44:17,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:44:17,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2018-11-12 16:44:17,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:18,033 INFO L225 Difference]: With dead ends: 17709 [2018-11-12 16:44:18,034 INFO L226 Difference]: Without dead ends: 10738 [2018-11-12 16:44:18,084 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:44:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10738 states. [2018-11-12 16:44:18,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10738 to 10702. [2018-11-12 16:44:18,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10702 states. [2018-11-12 16:44:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10702 states to 10702 states and 14504 transitions. [2018-11-12 16:44:18,357 INFO L78 Accepts]: Start accepts. Automaton has 10702 states and 14504 transitions. Word has length 186 [2018-11-12 16:44:18,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:18,358 INFO L480 AbstractCegarLoop]: Abstraction has 10702 states and 14504 transitions. [2018-11-12 16:44:18,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:44:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 10702 states and 14504 transitions. [2018-11-12 16:44:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-11-12 16:44:18,363 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:18,364 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:44:18,365 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:18,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:18,366 INFO L82 PathProgramCache]: Analyzing trace with hash 773533269, now seen corresponding path program 1 times [2018-11-12 16:44:18,366 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:18,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:18,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:18,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:18,369 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:44:18,740 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:44:18,740 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:44:18,741 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-11-12 16:44:18,745 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [255], [257], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:44:18,837 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:44:18,837 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:44:19,793 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:44:19,795 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Performed 2358 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2358 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:44:19,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:19,842 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:44:20,698 INFO L227 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 77.48% of their original sizes. [2018-11-12 16:44:20,699 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:44:21,959 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-11-12 16:44:21,959 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:44:21,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:44:21,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-12 16:44:21,960 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:21,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:44:21,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:44:21,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:44:21,962 INFO L87 Difference]: Start difference. First operand 10702 states and 14504 transitions. Second operand 11 states. [2018-11-12 16:44:29,007 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:44:50,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:50,408 INFO L93 Difference]: Finished difference Result 21741 states and 29408 transitions. [2018-11-12 16:44:50,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 16:44:50,409 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 223 [2018-11-12 16:44:50,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:50,449 INFO L225 Difference]: With dead ends: 21741 [2018-11-12 16:44:50,449 INFO L226 Difference]: Without dead ends: 11045 [2018-11-12 16:44:50,480 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 227 GetRequests, 177 SyntacticMatches, 36 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:44:50,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11045 states. [2018-11-12 16:44:50,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11045 to 11040. [2018-11-12 16:44:50,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11040 states. [2018-11-12 16:44:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11040 states to 11040 states and 14851 transitions. [2018-11-12 16:44:50,708 INFO L78 Accepts]: Start accepts. Automaton has 11040 states and 14851 transitions. Word has length 223 [2018-11-12 16:44:50,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:50,709 INFO L480 AbstractCegarLoop]: Abstraction has 11040 states and 14851 transitions. [2018-11-12 16:44:50,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:44:50,709 INFO L276 IsEmpty]: Start isEmpty. Operand 11040 states and 14851 transitions. [2018-11-12 16:44:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-11-12 16:44:50,715 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:50,716 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 16:44:50,716 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:50,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:50,717 INFO L82 PathProgramCache]: Analyzing trace with hash -159997069, now seen corresponding path program 1 times [2018-11-12 16:44:50,717 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:50,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:50,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:50,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:50,718 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:50,985 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-12 16:44:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 117 proven. 116 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-12 16:44:51,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:44:51,105 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:44:51,105 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 316 with the following transitions: [2018-11-12 16:44:51,106 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [255], [257], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:44:51,111 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:44:51,111 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:44:51,209 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:44:52,309 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:44:52,310 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Performed 6983 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6983 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:44:52,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:52,349 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:44:53,052 INFO L227 lantSequenceWeakener]: Weakened 95 states. On average, predicates are now at 77.87% of their original sizes. [2018-11-12 16:44:53,052 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:44:54,485 INFO L415 sIntCurrentIteration]: We unified 314 AI predicates to 314 [2018-11-12 16:44:54,485 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:44:54,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:44:54,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [7] total 27 [2018-11-12 16:44:54,486 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:54,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 16:44:54,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 16:44:54,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:44:54,489 INFO L87 Difference]: Start difference. First operand 11040 states and 14851 transitions. Second operand 22 states. [2018-11-12 16:45:23,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:45:23,492 INFO L93 Difference]: Finished difference Result 23446 states and 31372 transitions. [2018-11-12 16:45:23,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-12 16:45:23,492 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 315 [2018-11-12 16:45:23,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:45:23,552 INFO L225 Difference]: With dead ends: 23446 [2018-11-12 16:45:23,552 INFO L226 Difference]: Without dead ends: 12750 [2018-11-12 16:45:23,601 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 328 GetRequests, 269 SyntacticMatches, 25 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2018-11-12 16:45:23,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12750 states. [2018-11-12 16:45:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12750 to 11778. [2018-11-12 16:45:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11778 states. [2018-11-12 16:45:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11778 states to 11778 states and 15687 transitions. [2018-11-12 16:45:23,936 INFO L78 Accepts]: Start accepts. Automaton has 11778 states and 15687 transitions. Word has length 315 [2018-11-12 16:45:23,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:45:23,937 INFO L480 AbstractCegarLoop]: Abstraction has 11778 states and 15687 transitions. [2018-11-12 16:45:23,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 16:45:23,937 INFO L276 IsEmpty]: Start isEmpty. Operand 11778 states and 15687 transitions. [2018-11-12 16:45:23,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-11-12 16:45:23,946 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:45:23,947 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:45:23,947 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:45:23,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:23,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1258796923, now seen corresponding path program 1 times [2018-11-12 16:45:23,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:45:23,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:23,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:45:23,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:23,949 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:45:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:45:24,425 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-12 16:45:24,782 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 16:45:25,266 WARN L179 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 16:45:26,082 WARN L179 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-11-12 16:45:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 176 proven. 70 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-12 16:45:27,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:45:27,169 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:45:27,169 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 352 with the following transitions: [2018-11-12 16:45:27,170 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [255], [257], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:45:27,175 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:45:27,176 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:45:27,355 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:45:27,648 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:45:27,648 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Performed 7240 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7240 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:45:27,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:27,658 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:45:28,208 INFO L227 lantSequenceWeakener]: Weakened 95 states. On average, predicates are now at 77.87% of their original sizes. [2018-11-12 16:45:28,209 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:45:29,189 INFO L415 sIntCurrentIteration]: We unified 350 AI predicates to 350 [2018-11-12 16:45:29,190 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:45:29,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:45:29,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [13] total 34 [2018-11-12 16:45:29,190 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:45:29,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 16:45:29,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 16:45:29,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:45:29,192 INFO L87 Difference]: Start difference. First operand 11778 states and 15687 transitions. Second operand 23 states. [2018-11-12 16:46:13,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:46:13,576 INFO L93 Difference]: Finished difference Result 25424 states and 33648 transitions. [2018-11-12 16:46:13,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-12 16:46:13,577 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 351 [2018-11-12 16:46:13,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:46:13,643 INFO L225 Difference]: With dead ends: 25424 [2018-11-12 16:46:13,644 INFO L226 Difference]: Without dead ends: 14332 [2018-11-12 16:46:13,671 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 369 GetRequests, 314 SyntacticMatches, 15 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=317, Invalid=1405, Unknown=0, NotChecked=0, Total=1722 [2018-11-12 16:46:13,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14332 states. [2018-11-12 16:46:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14332 to 13063. [2018-11-12 16:46:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13063 states. [2018-11-12 16:46:13,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13063 states to 13063 states and 17099 transitions. [2018-11-12 16:46:13,936 INFO L78 Accepts]: Start accepts. Automaton has 13063 states and 17099 transitions. Word has length 351 [2018-11-12 16:46:13,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:46:13,936 INFO L480 AbstractCegarLoop]: Abstraction has 13063 states and 17099 transitions. [2018-11-12 16:46:13,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 16:46:13,937 INFO L276 IsEmpty]: Start isEmpty. Operand 13063 states and 17099 transitions. [2018-11-12 16:46:13,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-11-12 16:46:13,953 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:46:13,953 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:46:13,953 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:46:13,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:13,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1066270968, now seen corresponding path program 1 times [2018-11-12 16:46:13,954 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:46:13,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:13,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:46:13,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:13,955 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:46:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:46:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-11-12 16:46:14,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:46:14,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:46:14,432 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:46:14,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:46:14,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:46:14,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:46:14,433 INFO L87 Difference]: Start difference. First operand 13063 states and 17099 transitions. Second operand 4 states. [2018-11-12 16:46:25,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:46:25,084 INFO L93 Difference]: Finished difference Result 38350 states and 51634 transitions. [2018-11-12 16:46:25,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:46:25,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 446 [2018-11-12 16:46:25,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:46:25,135 INFO L225 Difference]: With dead ends: 38350 [2018-11-12 16:46:25,135 INFO L226 Difference]: Without dead ends: 18593 [2018-11-12 16:46:25,209 INFO L604 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 [2018-11-12 16:46:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18593 states. [2018-11-12 16:46:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18593 to 18251. [2018-11-12 16:46:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18251 states. [2018-11-12 16:46:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 20769 transitions. [2018-11-12 16:46:25,513 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 20769 transitions. Word has length 446 [2018-11-12 16:46:25,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:46:25,514 INFO L480 AbstractCegarLoop]: Abstraction has 18251 states and 20769 transitions. [2018-11-12 16:46:25,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:46:25,514 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 20769 transitions. [2018-11-12 16:46:25,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2018-11-12 16:46:25,563 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:46:25,564 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 16:46:25,564 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:46:25,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:25,564 INFO L82 PathProgramCache]: Analyzing trace with hash -357730898, now seen corresponding path program 1 times [2018-11-12 16:46:25,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:46:25,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:25,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:46:25,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:25,566 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:46:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:46:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 328 proven. 223 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2018-11-12 16:46:26,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:46:26,694 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:46:26,694 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 759 with the following transitions: [2018-11-12 16:46:26,695 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [255], [257], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:46:26,699 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:46:26,700 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:46:27,232 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:46:27,232 INFO L272 AbstractInterpreter]: Visited 251 different actions 496 times. Merged at 5 different actions 5 times. Never widened. Performed 6354 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6354 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:46:27,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:27,270 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:46:28,104 INFO L227 lantSequenceWeakener]: Weakened 258 states. On average, predicates are now at 77.58% of their original sizes. [2018-11-12 16:46:28,105 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:46:28,937 INFO L415 sIntCurrentIteration]: We unified 757 AI predicates to 757 [2018-11-12 16:46:28,937 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:46:28,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:46:28,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-12 16:46:28,938 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:46:28,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 16:46:28,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 16:46:28,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:46:28,939 INFO L87 Difference]: Start difference. First operand 18251 states and 20769 transitions. Second operand 22 states. [2018-11-12 16:46:40,856 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:46:56,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:46:56,286 INFO L93 Difference]: Finished difference Result 36798 states and 41900 transitions. [2018-11-12 16:46:56,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 16:46:56,286 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 758 [2018-11-12 16:46:56,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:46:56,345 INFO L225 Difference]: With dead ends: 36798 [2018-11-12 16:46:56,345 INFO L226 Difference]: Without dead ends: 18891 [2018-11-12 16:46:56,386 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 773 GetRequests, 727 SyntacticMatches, 10 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=264, Invalid=1142, Unknown=0, NotChecked=0, Total=1406 [2018-11-12 16:46:56,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18891 states. [2018-11-12 16:46:56,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18891 to 18882. [2018-11-12 16:46:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18882 states. [2018-11-12 16:46:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18882 states to 18882 states and 21415 transitions. [2018-11-12 16:46:56,686 INFO L78 Accepts]: Start accepts. Automaton has 18882 states and 21415 transitions. Word has length 758 [2018-11-12 16:46:56,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:46:56,687 INFO L480 AbstractCegarLoop]: Abstraction has 18882 states and 21415 transitions. [2018-11-12 16:46:56,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 16:46:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand 18882 states and 21415 transitions. [2018-11-12 16:46:56,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2018-11-12 16:46:56,738 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:46:56,739 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:46:56,739 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:46:56,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:56,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1059366942, now seen corresponding path program 1 times [2018-11-12 16:46:56,740 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:46:56,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:56,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:46:56,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:56,741 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:46:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:46:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 328 proven. 223 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2018-11-12 16:46:58,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:46:58,470 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:46:58,470 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 767 with the following transitions: [2018-11-12 16:46:58,470 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [255], [257], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:46:58,475 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:46:58,475 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:47:01,814 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:47:01,815 INFO L272 AbstractInterpreter]: Visited 259 different actions 3042 times. Merged at 5 different actions 55 times. Widened at 1 different actions 7 times. Performed 53406 root evaluator evaluations with a maximum evaluation depth of 6. Performed 53406 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:47:01,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:01,817 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:47:02,855 INFO L227 lantSequenceWeakener]: Weakened 110 states. On average, predicates are now at 77.77% of their original sizes. [2018-11-12 16:47:02,856 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:47:03,245 INFO L415 sIntCurrentIteration]: We unified 765 AI predicates to 765 [2018-11-12 16:47:03,246 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:47:03,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:47:03,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 16:47:03,246 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:47:03,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 16:47:03,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 16:47:03,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:47:03,248 INFO L87 Difference]: Start difference. First operand 18882 states and 21415 transitions. Second operand 23 states. [2018-11-12 16:47:13,851 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 16:47:18,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-12 16:47:18,901 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:47:18,909 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:47:18,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:47:18 BoogieIcfgContainer [2018-11-12 16:47:18,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:47:18,910 INFO L168 Benchmark]: Toolchain (without parser) took 214132.52 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -389.4 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-11-12 16:47:18,911 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-11-12 16:47:18,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1329.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:47:18,912 INFO L168 Benchmark]: Boogie Procedure Inliner took 194.57 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 729.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -846.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:47:18,913 INFO L168 Benchmark]: Boogie Preprocessor took 196.66 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:47:18,914 INFO L168 Benchmark]: RCFGBuilder took 6361.76 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 270.5 MB). Peak memory consumption was 270.5 MB. Max. memory is 7.1 GB. [2018-11-12 16:47:18,914 INFO L168 Benchmark]: TraceAbstraction took 206043.76 ms. Allocated memory was 2.2 GB in the beginning and 5.2 GB in the end (delta: 3.0 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 112.7 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-12 16:47:18,919 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1329.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 194.57 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 729.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -846.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 196.66 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6361.76 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 270.5 MB). Peak memory consumption was 270.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206043.76 ms. Allocated memory was 2.2 GB in the beginning and 5.2 GB in the end (delta: 3.0 GB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 112.7 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 52). Cancelled while BasicCegarLoop was constructing difference of abstraction (18882states) and FLOYD_HOARE automaton (currently 28 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (2635 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 205.9s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 178.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2198 SDtfs, 28606 SDslu, 1823 SDs, 0 SdLazy, 30185 SolverSat, 5360 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.8s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2522 GetRequests, 2246 SyntacticMatches, 90 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2028 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18882occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.7s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9976473779602849 AbsIntWeakeningRatio, 0.0739202657807309 AbsIntAvgWeakeningVarsNumRemoved, 12.192691029900333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 2760 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 3420 NumberOfCodeBlocks, 3420 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3409 ConstructedInterpolants, 0 QuantifiedInterpolants, 5124479 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 2856/3501 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown