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_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:21:55,867 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:21:55,869 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:21:55,883 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:21:55,883 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:21:55,885 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:21:55,886 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:21:55,888 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:21:55,890 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:21:55,891 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:21:55,892 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:21:55,892 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:21:55,893 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:21:55,894 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:21:55,896 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:21:55,896 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:21:55,897 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:21:55,899 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:21:55,901 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:21:55,903 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:21:55,904 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:21:55,905 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:21:55,907 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:21:55,907 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:21:55,908 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:21:55,909 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:21:55,909 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:21:55,910 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:21:55,911 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:21:55,912 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:21:55,912 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:21:55,913 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:21:55,913 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:21:55,913 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:21:55,914 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:21:55,915 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:21:55,915 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 19:21:55,933 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:21:55,934 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:21:55,935 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:21:55,935 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:21:55,935 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:21:55,935 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:21:55,935 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:21:55,936 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:21:55,936 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:21:55,936 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:21:55,936 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:21:55,936 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:21:55,936 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:21:55,937 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:21:55,937 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:21:55,938 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:21:55,938 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:21:55,938 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:21:55,938 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:21:55,938 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:21:55,939 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:21:55,939 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:21:55,939 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:21:55,939 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:21:55,939 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:21:55,940 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:21:55,940 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:21:55,940 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:21:55,940 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:21:55,941 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:21:55,941 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:21:55,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:21:55,941 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:21:55,941 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:21:55,942 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:21:56,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:21:56,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:21:56,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:21:56,025 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:21:56,026 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:21:56,027 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label28_true-unreach-call.c [2018-11-12 19:21:56,098 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a620f498/d7f77d82bd364adcb36b9ebdb7d150b7/FLAG1c6e66441 [2018-11-12 19:21:56,788 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:21:56,789 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label28_true-unreach-call.c [2018-11-12 19:21:56,814 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a620f498/d7f77d82bd364adcb36b9ebdb7d150b7/FLAG1c6e66441 [2018-11-12 19:21:56,833 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a620f498/d7f77d82bd364adcb36b9ebdb7d150b7 [2018-11-12 19:21:56,845 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:21:56,848 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:21:56,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:21:56,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:21:56,853 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:21:56,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:21:56" (1/1) ... [2018-11-12 19:21:56,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c7a8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:56, skipping insertion in model container [2018-11-12 19:21:56,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:21:56" (1/1) ... [2018-11-12 19:21:56,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:21:56,951 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:21:57,753 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:21:57,759 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:21:57,999 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:21:58,024 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:21:58,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:58 WrapperNode [2018-11-12 19:21:58,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:21:58,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:21:58,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:21:58,026 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:21:58,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:58" (1/1) ... [2018-11-12 19:21:58,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:58" (1/1) ... [2018-11-12 19:21:58,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:21:58,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:21:58,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:21:58,235 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:21:58,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:58" (1/1) ... [2018-11-12 19:21:58,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:58" (1/1) ... [2018-11-12 19:21:58,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:58" (1/1) ... [2018-11-12 19:21:58,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:58" (1/1) ... [2018-11-12 19:21:58,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:58" (1/1) ... [2018-11-12 19:21:58,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:58" (1/1) ... [2018-11-12 19:21:58,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:58" (1/1) ... [2018-11-12 19:21:58,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:21:58,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:21:58,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:21:58,365 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:21:58,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:58" (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 19:21:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:21:58,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:21:58,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:21:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:21:58,446 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:21:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:21:58,446 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:21:58,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:21:58,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:21:58,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:21:58,447 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:22:04,431 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:22:04,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:22:04 BoogieIcfgContainer [2018-11-12 19:22:04,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:22:04,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:22:04,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:22:04,438 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:22:04,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:21:56" (1/3) ... [2018-11-12 19:22:04,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0de18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:22:04, skipping insertion in model container [2018-11-12 19:22:04,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:58" (2/3) ... [2018-11-12 19:22:04,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0de18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:22:04, skipping insertion in model container [2018-11-12 19:22:04,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:22:04" (3/3) ... [2018-11-12 19:22:04,442 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label28_true-unreach-call.c [2018-11-12 19:22:04,453 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:22:04,464 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:22:04,483 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:22:04,527 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:22:04,528 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:22:04,528 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:22:04,528 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:22:04,528 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:22:04,528 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:22:04,528 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:22:04,529 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:22:04,562 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 19:22:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-12 19:22:04,574 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:04,575 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:22:04,578 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:04,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:04,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1986931573, now seen corresponding path program 1 times [2018-11-12 19:22:04,588 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:04,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:04,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:04,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:04,653 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:05,143 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:22:05,328 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 19:22:05,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:22:05,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:22:05,335 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:22:05,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:22:05,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:22:05,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:22:05,374 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 19:22:09,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:22:09,036 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 19:22:09,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:22:09,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-11-12 19:22:09,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:22:09,064 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 19:22:09,065 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 19:22:09,082 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:22:09,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 19:22:09,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 19:22:09,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 19:22:09,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-11-12 19:22:09,193 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 73 [2018-11-12 19:22:09,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:22:09,194 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-11-12 19:22:09,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:22:09,194 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-11-12 19:22:09,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-12 19:22:09,206 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:09,207 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:22:09,207 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:09,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:09,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1284369448, now seen corresponding path program 1 times [2018-11-12 19:22:09,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:09,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:09,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:09,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:09,210 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:22:09,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:22:09,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:22:09,689 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:22:09,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:22:09,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:22:09,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:22:09,693 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-11-12 19:22:16,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:22:16,463 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-11-12 19:22:16,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:22:16,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-11-12 19:22:16,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:22:16,487 INFO L225 Difference]: With dead ends: 2183 [2018-11-12 19:22:16,487 INFO L226 Difference]: Without dead ends: 1445 [2018-11-12 19:22:16,492 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 19:22:16,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-12 19:22:16,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-11-12 19:22:16,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-11-12 19:22:16,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-11-12 19:22:16,564 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 181 [2018-11-12 19:22:16,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:22:16,565 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-11-12 19:22:16,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:22:16,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-11-12 19:22:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-11-12 19:22:16,573 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:16,573 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:22:16,573 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:16,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:16,574 INFO L82 PathProgramCache]: Analyzing trace with hash 365122197, now seen corresponding path program 1 times [2018-11-12 19:22:16,574 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:16,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:16,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:16,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:16,575 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:16,848 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:22:16,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:22:16,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:22:16,849 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:22:16,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:22:16,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:22:16,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:22:16,851 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-11-12 19:22:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:22:20,731 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-11-12 19:22:20,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:22:20,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 184 [2018-11-12 19:22:20,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:22:20,748 INFO L225 Difference]: With dead ends: 3902 [2018-11-12 19:22:20,748 INFO L226 Difference]: Without dead ends: 2484 [2018-11-12 19:22:20,753 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 19:22:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-11-12 19:22:20,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-11-12 19:22:20,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-11-12 19:22:20,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-11-12 19:22:20,822 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 184 [2018-11-12 19:22:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:22:20,823 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-11-12 19:22:20,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:22:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-11-12 19:22:20,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-11-12 19:22:20,829 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:20,829 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:22:20,830 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:20,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:20,830 INFO L82 PathProgramCache]: Analyzing trace with hash 351973064, now seen corresponding path program 1 times [2018-11-12 19:22:20,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:20,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:20,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:20,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:20,832 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:21,129 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:22:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 132 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:22:21,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:22:21,252 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:22:21,253 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 301 with the following transitions: [2018-11-12 19:22:21,255 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [663], [665], [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], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:22:21,321 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:22:21,322 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:22:22,273 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:22:22,277 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Performed 2032 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2032 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:22:22,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:22,327 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:22:23,473 INFO L227 lantSequenceWeakener]: Weakened 278 states. On average, predicates are now at 78.26% of their original sizes. [2018-11-12 19:22:23,473 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:22:25,052 INFO L415 sIntCurrentIteration]: We unified 299 AI predicates to 299 [2018-11-12 19:22:25,053 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:22:25,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:22:25,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-12 19:22:25,054 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:22:25,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 19:22:25,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 19:22:25,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:22:25,056 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 10 states. [2018-11-12 19:22:29,852 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:22:46,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:22:46,230 INFO L93 Difference]: Finished difference Result 5285 states and 7974 transitions. [2018-11-12 19:22:46,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 19:22:46,230 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 300 [2018-11-12 19:22:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:22:46,248 INFO L225 Difference]: With dead ends: 5285 [2018-11-12 19:22:46,249 INFO L226 Difference]: Without dead ends: 2817 [2018-11-12 19:22:46,259 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 303 GetRequests, 248 SyntacticMatches, 43 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 19:22:46,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2018-11-12 19:22:46,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2812. [2018-11-12 19:22:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-11-12 19:22:46,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-11-12 19:22:46,346 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 300 [2018-11-12 19:22:46,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:22:46,347 INFO L480 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-11-12 19:22:46,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 19:22:46,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-11-12 19:22:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-11-12 19:22:46,357 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:46,357 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:22:46,361 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:46,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:46,362 INFO L82 PathProgramCache]: Analyzing trace with hash 447473451, now seen corresponding path program 1 times [2018-11-12 19:22:46,362 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:46,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:46,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:46,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:46,364 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 293 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-12 19:22:47,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:22:47,046 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:22:47,046 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 393 with the following transitions: [2018-11-12 19:22:47,047 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [663], [665], [668], [673], [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], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:22:47,052 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:22:47,053 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:22:47,189 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:22:47,761 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:22:47,762 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Performed 6058 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6058 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 19:22:47,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:47,801 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:22:49,294 INFO L227 lantSequenceWeakener]: Weakened 110 states. On average, predicates are now at 77.56% of their original sizes. [2018-11-12 19:22:49,294 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:22:51,282 INFO L415 sIntCurrentIteration]: We unified 391 AI predicates to 391 [2018-11-12 19:22:51,283 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:22:51,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:22:51,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-12 19:22:51,283 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:22:51,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 19:22:51,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 19:22:51,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-11-12 19:22:51,285 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 17 states. [2018-11-12 19:23:31,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:23:31,648 INFO L93 Difference]: Finished difference Result 6721 states and 9784 transitions. [2018-11-12 19:23:31,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 19:23:31,648 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 392 [2018-11-12 19:23:31,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:23:31,667 INFO L225 Difference]: With dead ends: 6721 [2018-11-12 19:23:31,667 INFO L226 Difference]: Without dead ends: 4253 [2018-11-12 19:23:31,677 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 399 GetRequests, 356 SyntacticMatches, 20 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2018-11-12 19:23:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2018-11-12 19:23:31,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4002. [2018-11-12 19:23:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4002 states. [2018-11-12 19:23:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4002 states to 4002 states and 5322 transitions. [2018-11-12 19:23:31,773 INFO L78 Accepts]: Start accepts. Automaton has 4002 states and 5322 transitions. Word has length 392 [2018-11-12 19:23:31,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:23:31,774 INFO L480 AbstractCegarLoop]: Abstraction has 4002 states and 5322 transitions. [2018-11-12 19:23:31,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 19:23:31,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4002 states and 5322 transitions. [2018-11-12 19:23:31,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-11-12 19:23:31,785 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:23:31,785 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-12 19:23:31,786 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:23:31,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:31,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1188975523, now seen corresponding path program 1 times [2018-11-12 19:23:31,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:23:31,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:31,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:23:31,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:31,788 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:23:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:23:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 317 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 19:23:32,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:23:32,923 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:23:32,924 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 429 with the following transitions: [2018-11-12 19:23:32,924 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [663], [665], [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], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:23:32,928 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:23:32,929 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:23:33,071 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:23:33,406 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:23:33,406 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Performed 7067 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7067 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 19:23:33,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:33,415 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:23:34,022 INFO L227 lantSequenceWeakener]: Weakened 110 states. On average, predicates are now at 77.56% of their original sizes. [2018-11-12 19:23:34,023 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:23:35,617 INFO L415 sIntCurrentIteration]: We unified 427 AI predicates to 427 [2018-11-12 19:23:35,618 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:23:35,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:23:35,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [13] total 27 [2018-11-12 19:23:35,618 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:23:35,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 19:23:35,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 19:23:35,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-11-12 19:23:35,620 INFO L87 Difference]: Start difference. First operand 4002 states and 5322 transitions. Second operand 16 states. [2018-11-12 19:24:23,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:24:23,272 INFO L93 Difference]: Finished difference Result 7627 states and 10724 transitions. [2018-11-12 19:24:23,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 19:24:23,272 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 428 [2018-11-12 19:24:23,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:24:23,291 INFO L225 Difference]: With dead ends: 7627 [2018-11-12 19:24:23,292 INFO L226 Difference]: Without dead ends: 5157 [2018-11-12 19:24:23,300 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 435 GetRequests, 393 SyntacticMatches, 20 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2018-11-12 19:24:23,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2018-11-12 19:24:23,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 4813. [2018-11-12 19:24:23,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4813 states. [2018-11-12 19:24:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4813 states to 4813 states and 6160 transitions. [2018-11-12 19:24:23,416 INFO L78 Accepts]: Start accepts. Automaton has 4813 states and 6160 transitions. Word has length 428 [2018-11-12 19:24:23,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:24:23,417 INFO L480 AbstractCegarLoop]: Abstraction has 4813 states and 6160 transitions. [2018-11-12 19:24:23,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 19:24:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 4813 states and 6160 transitions. [2018-11-12 19:24:23,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2018-11-12 19:24:23,431 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:24:23,431 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-12 19:24:23,432 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:24:23,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:24:23,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1945683914, now seen corresponding path program 1 times [2018-11-12 19:24:23,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:24:23,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:24:23,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:24:23,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:24:23,433 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:24:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:24:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 317 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 19:24:24,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:24:24,529 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:24:24,529 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 454 with the following transitions: [2018-11-12 19:24:24,529 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [663], [665], [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], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1004], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:24:24,534 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:24:24,534 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:24:24,689 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:24:24,978 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:24:24,978 INFO L272 AbstractInterpreter]: Visited 162 different actions 473 times. Merged at 5 different actions 9 times. Never widened. Performed 8016 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8016 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 19:24:24,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:24:24,983 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:24:25,805 INFO L227 lantSequenceWeakener]: Weakened 110 states. On average, predicates are now at 77.56% of their original sizes. [2018-11-12 19:24:25,805 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:24:26,826 INFO L415 sIntCurrentIteration]: We unified 452 AI predicates to 452 [2018-11-12 19:24:26,826 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:24:26,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:24:26,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [13] total 28 [2018-11-12 19:24:26,827 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:24:26,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 19:24:26,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 19:24:26,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-11-12 19:24:26,828 INFO L87 Difference]: Start difference. First operand 4813 states and 6160 transitions. Second operand 17 states. [2018-11-12 19:25:08,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:25:08,897 INFO L93 Difference]: Finished difference Result 8444 states and 11578 transitions. [2018-11-12 19:25:08,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-12 19:25:08,897 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 453 [2018-11-12 19:25:08,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:25:08,921 INFO L225 Difference]: With dead ends: 8444 [2018-11-12 19:25:08,921 INFO L226 Difference]: Without dead ends: 5974 [2018-11-12 19:25:08,930 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 460 GetRequests, 417 SyntacticMatches, 20 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2018-11-12 19:25:08,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5974 states. [2018-11-12 19:25:09,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5974 to 5624. [2018-11-12 19:25:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5624 states. [2018-11-12 19:25:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5624 states to 5624 states and 7006 transitions. [2018-11-12 19:25:09,068 INFO L78 Accepts]: Start accepts. Automaton has 5624 states and 7006 transitions. Word has length 453 [2018-11-12 19:25:09,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:25:09,069 INFO L480 AbstractCegarLoop]: Abstraction has 5624 states and 7006 transitions. [2018-11-12 19:25:09,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 19:25:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5624 states and 7006 transitions. [2018-11-12 19:25:09,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2018-11-12 19:25:09,088 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:25:09,088 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-12 19:25:09,088 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:25:09,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:25:09,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1999216122, now seen corresponding path program 1 times [2018-11-12 19:25:09,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:25:09,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:09,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:25:09,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:25:09,091 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:25:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:25:10,547 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 317 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 19:25:10,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:25:10,548 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:25:10,548 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 494 with the following transitions: [2018-11-12 19:25:10,549 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [663], [665], [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], [913], [917], [921], [925], [929], [933], [937], [941], [945], [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], [1164], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:25:10,554 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:25:10,555 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:25:11,209 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:25:11,209 INFO L272 AbstractInterpreter]: Visited 202 different actions 593 times. Merged at 5 different actions 9 times. Never widened. Performed 10767 root evaluator evaluations with a maximum evaluation depth of 6. Performed 10767 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 19:25:11,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:25:11,218 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:25:12,199 INFO L227 lantSequenceWeakener]: Weakened 42 states. On average, predicates are now at 79.11% of their original sizes. [2018-11-12 19:25:12,200 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:25:13,840 INFO L415 sIntCurrentIteration]: We unified 492 AI predicates to 492 [2018-11-12 19:25:13,841 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:25:13,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:25:13,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-12 19:25:13,841 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:25:13,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:25:13,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:25:13,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:25:13,843 INFO L87 Difference]: Start difference. First operand 5624 states and 7006 transitions. Second operand 20 states. [2018-11-12 19:25:15,928 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 19:25:37,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-12 19:25:37,070 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:25:37,076 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:25:37,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:25:37 BoogieIcfgContainer [2018-11-12 19:25:37,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:25:37,077 INFO L168 Benchmark]: Toolchain (without parser) took 220230.50 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 1.4 GB in the end (delta: 71.7 MB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-11-12 19:25:37,079 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:25:37,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1176.28 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:25:37,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 208.68 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -881.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:25:37,081 INFO L168 Benchmark]: Boogie Preprocessor took 129.27 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:25:37,081 INFO L168 Benchmark]: RCFGBuilder took 6068.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 258.6 MB). Peak memory consumption was 258.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:25:37,082 INFO L168 Benchmark]: TraceAbstraction took 212642.88 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 596.4 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-12 19:25:37,092 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1176.28 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 208.68 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -881.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.27 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6068.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 258.6 MB). Peak memory consumption was 258.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212642.88 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 596.4 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 205]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 205). Cancelled while BasicCegarLoop was constructing difference of abstraction (5624states) and FLOYD_HOARE automaton (currently 28 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (1998 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 212.5s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 189.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2033 SDtfs, 21161 SDslu, 1149 SDs, 0 SdLazy, 28152 SolverSat, 3919 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.6s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2133 GetRequests, 1867 SyntacticMatches, 134 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5624occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.4s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9977834206522274 AbsIntWeakeningRatio, 0.07472100921882581 AbsIntAvgWeakeningVarsNumRemoved, 6.399805919456575 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 981 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 2504 NumberOfCodeBlocks, 2504 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2496 ConstructedInterpolants, 0 QuantifiedInterpolants, 5000213 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 1930/2476 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown