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/Problem12_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:51:03,825 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:51:03,827 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:51:03,840 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:51:03,840 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:51:03,841 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:51:03,843 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:51:03,845 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:51:03,847 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:51:03,848 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:51:03,849 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:51:03,849 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:51:03,850 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:51:03,851 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:51:03,853 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:51:03,855 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:51:03,856 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:51:03,862 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:51:03,867 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:51:03,872 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:51:03,873 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:51:03,881 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:51:03,884 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:51:03,884 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:51:03,884 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:51:03,885 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:51:03,886 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:51:03,887 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:51:03,888 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:51:03,896 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:51:03,896 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:51:03,897 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:51:03,898 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:51:03,898 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:51:03,899 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:51:03,900 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:51:03,900 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 18:51:03,931 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:51:03,932 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:51:03,932 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:51:03,933 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:51:03,933 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:51:03,933 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:51:03,933 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:51:03,933 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:51:03,934 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:51:03,934 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:51:03,934 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:51:03,934 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:51:03,934 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:51:03,935 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:51:03,936 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:51:03,936 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:51:03,936 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:51:03,936 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:51:03,936 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:51:03,936 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:51:03,937 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:51:03,937 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:51:03,937 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:51:03,937 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:51:03,937 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:51:03,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:51:03,938 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:51:03,938 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:51:03,938 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:51:03,939 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:51:03,941 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:51:03,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:51:03,941 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:51:03,941 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:51:03,942 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:51:04,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:51:04,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:51:04,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:51:04,027 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:51:04,027 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:51:04,028 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46_true-unreach-call.c [2018-11-12 18:51:04,098 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/322988294/6e50475f46594ab99fa6e5450c5f1348/FLAG49564b47b [2018-11-12 18:51:04,896 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:51:04,897 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label46_true-unreach-call.c [2018-11-12 18:51:04,932 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/322988294/6e50475f46594ab99fa6e5450c5f1348/FLAG49564b47b [2018-11-12 18:51:04,952 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/322988294/6e50475f46594ab99fa6e5450c5f1348 [2018-11-12 18:51:04,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:51:04,967 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:51:04,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:51:04,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:51:04,976 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:51:04,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:51:04" (1/1) ... [2018-11-12 18:51:04,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5c9c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:51:04, skipping insertion in model container [2018-11-12 18:51:04,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:51:04" (1/1) ... [2018-11-12 18:51:04,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:51:05,145 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:51:06,533 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:51:06,537 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:51:07,094 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:51:07,128 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:51:07,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:51:07 WrapperNode [2018-11-12 18:51:07,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:51:07,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:51:07,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:51:07,130 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:51:07,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:51:07" (1/1) ... [2018-11-12 18:51:07,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:51:07" (1/1) ... [2018-11-12 18:51:07,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:51:07,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:51:07,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:51:07,462 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:51:07,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:51:07" (1/1) ... [2018-11-12 18:51:07,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:51:07" (1/1) ... [2018-11-12 18:51:07,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:51:07" (1/1) ... [2018-11-12 18:51:07,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:51:07" (1/1) ... [2018-11-12 18:51:07,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:51:07" (1/1) ... [2018-11-12 18:51:07,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:51:07" (1/1) ... [2018-11-12 18:51:07,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:51:07" (1/1) ... [2018-11-12 18:51:07,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:51:07,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:51:07,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:51:07,724 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:51:07,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:51:07" (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 18:51:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:51:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:51:07,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:51:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 18:51:07,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 18:51:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 18:51:07,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 18:51:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 18:51:07,802 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 18:51:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:51:07,802 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:51:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:51:07,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:51:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:51:07,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:51:17,459 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:51:17,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:51:17 BoogieIcfgContainer [2018-11-12 18:51:17,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:51:17,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:51:17,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:51:17,465 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:51:17,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:51:04" (1/3) ... [2018-11-12 18:51:17,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b685302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:51:17, skipping insertion in model container [2018-11-12 18:51:17,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:51:07" (2/3) ... [2018-11-12 18:51:17,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b685302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:51:17, skipping insertion in model container [2018-11-12 18:51:17,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:51:17" (3/3) ... [2018-11-12 18:51:17,469 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label46_true-unreach-call.c [2018-11-12 18:51:17,479 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:51:17,493 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:51:17,512 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:51:17,578 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:51:17,579 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:51:17,579 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:51:17,579 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:51:17,579 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:51:17,579 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:51:17,579 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:51:17,580 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:51:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-12 18:51:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-12 18:51:17,654 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:51:17,655 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] [2018-11-12 18:51:17,657 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:51:17,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:51:17,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1952423036, now seen corresponding path program 1 times [2018-11-12 18:51:17,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:51:17,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:51:17,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:51:17,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:51:17,714 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:51:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:51:18,271 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 18:51:18,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:51:18,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:51:18,275 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:51:18,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:51:18,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:51:18,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:51:18,303 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-12 18:51:29,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:51:29,614 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-12 18:51:29,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:51:29,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-11-12 18:51:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:51:29,663 INFO L225 Difference]: With dead ends: 3234 [2018-11-12 18:51:29,663 INFO L226 Difference]: Without dead ends: 2388 [2018-11-12 18:51:29,679 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 18:51:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-12 18:51:29,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-11-12 18:51:29,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-11-12 18:51:29,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 4022 transitions. [2018-11-12 18:51:29,897 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 4022 transitions. Word has length 68 [2018-11-12 18:51:29,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:51:29,898 INFO L480 AbstractCegarLoop]: Abstraction has 2388 states and 4022 transitions. [2018-11-12 18:51:29,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:51:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 4022 transitions. [2018-11-12 18:51:29,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-11-12 18:51:29,908 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:51:29,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:29,909 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:51:29,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:51:29,909 INFO L82 PathProgramCache]: Analyzing trace with hash 43116078, now seen corresponding path program 1 times [2018-11-12 18:51:29,910 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:51:29,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:51:29,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:51:29,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:51:29,911 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:51:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:51:30,213 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:51:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:51:30,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:51:30,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:51:30,602 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:51:30,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:51:30,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:51:30,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:51:30,605 INFO L87 Difference]: Start difference. First operand 2388 states and 4022 transitions. Second operand 6 states. [2018-11-12 18:51:44,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:51:44,130 INFO L93 Difference]: Finished difference Result 9453 states and 16261 transitions. [2018-11-12 18:51:44,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:51:44,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2018-11-12 18:51:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:51:44,181 INFO L225 Difference]: With dead ends: 9453 [2018-11-12 18:51:44,181 INFO L226 Difference]: Without dead ends: 7071 [2018-11-12 18:51:44,195 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:51:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2018-11-12 18:51:44,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7023. [2018-11-12 18:51:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2018-11-12 18:51:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 10536 transitions. [2018-11-12 18:51:44,422 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 10536 transitions. Word has length 168 [2018-11-12 18:51:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:51:44,423 INFO L480 AbstractCegarLoop]: Abstraction has 7023 states and 10536 transitions. [2018-11-12 18:51:44,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:51:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 10536 transitions. [2018-11-12 18:51:44,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-12 18:51:44,434 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:51:44,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:44,439 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:51:44,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:51:44,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1020213398, now seen corresponding path program 1 times [2018-11-12 18:51:44,439 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:51:44,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:51:44,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:51:44,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:51:44,442 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:51:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:51:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:51:44,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:51:44,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:51:44,738 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:51:44,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:51:44,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:51:44,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:51:44,740 INFO L87 Difference]: Start difference. First operand 7023 states and 10536 transitions. Second operand 4 states. [2018-11-12 18:51:52,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:51:52,804 INFO L93 Difference]: Finished difference Result 27807 states and 43318 transitions. [2018-11-12 18:51:52,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:51:52,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2018-11-12 18:51:52,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:51:52,931 INFO L225 Difference]: With dead ends: 27807 [2018-11-12 18:51:52,931 INFO L226 Difference]: Without dead ends: 20790 [2018-11-12 18:51:52,974 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:51:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20790 states. [2018-11-12 18:51:53,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20790 to 20790. [2018-11-12 18:51:53,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20790 states. [2018-11-12 18:51:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20790 states to 20790 states and 31070 transitions. [2018-11-12 18:51:53,526 INFO L78 Accepts]: Start accepts. Automaton has 20790 states and 31070 transitions. Word has length 218 [2018-11-12 18:51:53,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:51:53,527 INFO L480 AbstractCegarLoop]: Abstraction has 20790 states and 31070 transitions. [2018-11-12 18:51:53,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:51:53,527 INFO L276 IsEmpty]: Start isEmpty. Operand 20790 states and 31070 transitions. [2018-11-12 18:51:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-11-12 18:51:53,558 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:51:53,558 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 18:51:53,558 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:51:53,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:51:53,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1511512600, now seen corresponding path program 1 times [2018-11-12 18:51:53,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:51:53,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:51:53,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:51:53,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:51:53,561 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:51:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:51:54,000 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:51:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-12 18:51:54,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:51:54,482 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:51:54,483 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-11-12 18:51:54,485 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2311], [2313], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2552], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 18:51:54,553 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:51:54,553 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:51:55,434 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:51:56,853 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:51:56,854 INFO L272 AbstractInterpreter]: Visited 158 different actions 468 times. Merged at 7 different actions 16 times. Never widened. Performed 7156 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7156 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 18:51:56,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:51:56,901 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:51:58,073 INFO L227 lantSequenceWeakener]: Weakened 333 states. On average, predicates are now at 77.83% of their original sizes. [2018-11-12 18:51:58,073 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:51:58,994 INFO L415 sIntCurrentIteration]: We unified 335 AI predicates to 335 [2018-11-12 18:51:58,994 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:51:58,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:51:58,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2018-11-12 18:51:58,995 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:51:58,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:51:58,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:51:58,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:51:58,997 INFO L87 Difference]: Start difference. First operand 20790 states and 31070 transitions. Second operand 11 states. [2018-11-12 18:53:22,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:53:22,726 INFO L93 Difference]: Finished difference Result 49264 states and 74053 transitions. [2018-11-12 18:53:22,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 18:53:22,726 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 336 [2018-11-12 18:53:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:53:22,859 INFO L225 Difference]: With dead ends: 49264 [2018-11-12 18:53:22,859 INFO L226 Difference]: Without dead ends: 28480 [2018-11-12 18:53:22,956 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 345 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:53:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28480 states. [2018-11-12 18:53:23,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28480 to 28476. [2018-11-12 18:53:23,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28476 states. [2018-11-12 18:53:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28476 states to 28476 states and 39546 transitions. [2018-11-12 18:53:23,643 INFO L78 Accepts]: Start accepts. Automaton has 28476 states and 39546 transitions. Word has length 336 [2018-11-12 18:53:23,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:53:23,645 INFO L480 AbstractCegarLoop]: Abstraction has 28476 states and 39546 transitions. [2018-11-12 18:53:23,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:53:23,645 INFO L276 IsEmpty]: Start isEmpty. Operand 28476 states and 39546 transitions. [2018-11-12 18:53:23,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-11-12 18:53:23,675 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:53:23,675 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:53:23,676 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:53:23,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:53:23,676 INFO L82 PathProgramCache]: Analyzing trace with hash -433868720, now seen corresponding path program 1 times [2018-11-12 18:53:23,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:53:23,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:23,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:53:23,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:23,678 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:53:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:53:24,053 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:53:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 116 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:53:24,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:53:24,969 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:53:24,969 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 341 with the following transitions: [2018-11-12 18:53:24,970 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2311], [2313], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2568], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 18:53:24,984 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:53:24,985 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:53:25,182 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:53:25,888 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:53:25,888 INFO L272 AbstractInterpreter]: Visited 159 different actions 471 times. Merged at 7 different actions 18 times. Never widened. Performed 7343 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7343 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 18:53:25,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:53:25,925 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:53:25,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:53:25,925 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:53:25,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:53:25,944 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:53:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:53:26,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:53:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-11-12 18:53:26,408 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:53:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-11-12 18:53:26,882 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:53:26,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-11-12 18:53:26,882 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:53:26,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:53:26,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:53:26,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:53:26,884 INFO L87 Difference]: Start difference. First operand 28476 states and 39546 transitions. Second operand 3 states. [2018-11-12 18:53:34,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:53:34,173 INFO L93 Difference]: Finished difference Result 63257 states and 95950 transitions. [2018-11-12 18:53:34,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:53:34,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2018-11-12 18:53:34,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:53:34,336 INFO L225 Difference]: With dead ends: 63257 [2018-11-12 18:53:34,336 INFO L226 Difference]: Without dead ends: 42473 [2018-11-12 18:53:34,392 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 681 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:53:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42473 states. [2018-11-12 18:53:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42473 to 42470. [2018-11-12 18:53:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42470 states. [2018-11-12 18:53:35,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42470 states to 42470 states and 58739 transitions. [2018-11-12 18:53:35,267 INFO L78 Accepts]: Start accepts. Automaton has 42470 states and 58739 transitions. Word has length 340 [2018-11-12 18:53:35,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:53:35,268 INFO L480 AbstractCegarLoop]: Abstraction has 42470 states and 58739 transitions. [2018-11-12 18:53:35,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:53:35,269 INFO L276 IsEmpty]: Start isEmpty. Operand 42470 states and 58739 transitions. [2018-11-12 18:53:35,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-11-12 18:53:35,320 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:53:35,320 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:35,321 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:53:35,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:53:35,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1181828019, now seen corresponding path program 1 times [2018-11-12 18:53:35,321 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:53:35,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:35,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:53:35,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:53:35,324 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:53:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:53:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 123 proven. 69 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 18:53:36,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:53:36,283 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:53:36,283 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 414 with the following transitions: [2018-11-12 18:53:36,284 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2311], [2313], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2997], [3001], [3005], [3009], [3013], [3017], [3021], [3025], [3029], [3033], [3037], [3041], [3045], [3049], [3053], [3057], [3061], [3065], [3069], [3073], [3077], [3081], [3085], [3089], [3093], [3097], [3101], [3105], [3109], [3113], [3117], [3121], [3125], [3129], [3133], [3137], [3141], [3145], [3149], [3153], [3156], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 18:53:36,301 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:53:36,301 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:53:37,340 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:53:37,341 INFO L272 AbstractInterpreter]: Visited 277 different actions 550 times. Merged at 5 different actions 7 times. Never widened. Performed 10224 root evaluator evaluations with a maximum evaluation depth of 6. Performed 10224 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 18:53:37,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:53:37,382 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:53:38,389 INFO L227 lantSequenceWeakener]: Weakened 410 states. On average, predicates are now at 75.49% of their original sizes. [2018-11-12 18:53:38,389 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:53:38,872 INFO L415 sIntCurrentIteration]: We unified 412 AI predicates to 412 [2018-11-12 18:53:38,872 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:53:38,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:53:38,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:53:38,873 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:53:38,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:53:38,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:53:38,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:53:38,874 INFO L87 Difference]: Start difference. First operand 42470 states and 58739 transitions. Second operand 11 states. [2018-11-12 18:53:42,203 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:54:10,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:54:10,024 INFO L93 Difference]: Finished difference Result 78790 states and 110984 transitions. [2018-11-12 18:54:10,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 18:54:10,024 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 413 [2018-11-12 18:54:10,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:54:10,177 INFO L225 Difference]: With dead ends: 78790 [2018-11-12 18:54:10,177 INFO L226 Difference]: Without dead ends: 42472 [2018-11-12 18:54:10,225 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 421 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-12 18:54:10,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42472 states. [2018-11-12 18:54:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42472 to 42470. [2018-11-12 18:54:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42470 states. [2018-11-12 18:54:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42470 states to 42470 states and 58737 transitions. [2018-11-12 18:54:11,620 INFO L78 Accepts]: Start accepts. Automaton has 42470 states and 58737 transitions. Word has length 413 [2018-11-12 18:54:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:54:11,620 INFO L480 AbstractCegarLoop]: Abstraction has 42470 states and 58737 transitions. [2018-11-12 18:54:11,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:54:11,621 INFO L276 IsEmpty]: Start isEmpty. Operand 42470 states and 58737 transitions. [2018-11-12 18:54:11,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-11-12 18:54:11,666 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:54:11,667 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:54:11,667 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:54:11,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:54:11,668 INFO L82 PathProgramCache]: Analyzing trace with hash 842042315, now seen corresponding path program 1 times [2018-11-12 18:54:11,668 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:54:11,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:11,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:54:11,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:11,669 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:54:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:54:12,076 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:54:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 189 proven. 252 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 18:54:12,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:54:12,390 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:54:12,390 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 440 with the following transitions: [2018-11-12 18:54:12,390 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2311], [2313], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2508], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2552], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-12 18:54:12,394 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:54:12,394 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:54:12,511 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:54:12,665 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:54:12,665 INFO L272 AbstractInterpreter]: Visited 155 different actions 304 times. Merged at 5 different actions 5 times. Never widened. Performed 4074 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4074 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 18:54:12,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:54:12,671 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:54:13,271 INFO L227 lantSequenceWeakener]: Weakened 137 states. On average, predicates are now at 76.78% of their original sizes. [2018-11-12 18:54:13,271 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:54:13,642 INFO L415 sIntCurrentIteration]: We unified 438 AI predicates to 438 [2018-11-12 18:54:13,642 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:54:13,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:54:13,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-12 18:54:13,643 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:54:13,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 18:54:13,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 18:54:13,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:54:13,646 INFO L87 Difference]: Start difference. First operand 42470 states and 58737 transitions. Second operand 21 states. Received shutdown request... [2018-11-12 18:54:28,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:54:28,006 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:54:28,011 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:54:28,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:54:28 BoogieIcfgContainer [2018-11-12 18:54:28,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:54:28,013 INFO L168 Benchmark]: Toolchain (without parser) took 203047.28 ms. Allocated memory was 1.5 GB in the beginning and 6.2 GB in the end (delta: 4.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-12 18:54:28,014 INFO L168 Benchmark]: CDTParser took 0.23 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 18:54:28,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2160.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-11-12 18:54:28,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 331.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. [2018-11-12 18:54:28,016 INFO L168 Benchmark]: Boogie Preprocessor took 261.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. [2018-11-12 18:54:28,017 INFO L168 Benchmark]: RCFGBuilder took 9736.65 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 148.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -162.0 MB). Peak memory consumption was 656.4 MB. Max. memory is 7.1 GB. [2018-11-12 18:54:28,018 INFO L168 Benchmark]: TraceAbstraction took 190550.69 ms. Allocated memory was 2.5 GB in the beginning and 6.2 GB in the end (delta: 3.7 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -100.4 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2018-11-12 18:54:28,024 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2160.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 331.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 261.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9736.65 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 148.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -162.0 MB). Peak memory consumption was 656.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 190550.69 ms. Allocated memory was 2.5 GB in the beginning and 6.2 GB in the end (delta: 3.7 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -100.4 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 195]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 195). Cancelled while BasicCegarLoop was constructing difference of abstraction (42470states) and FLOYD_HOARE automaton (currently 17 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (1476 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 190.4s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 170.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4231 SDtfs, 19730 SDslu, 1529 SDs, 0 SdLazy, 33509 SolverSat, 7987 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1926 GetRequests, 1838 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42470occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.7s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9980689908758155 AbsIntWeakeningRatio, 0.07341772151898734 AbsIntAvgWeakeningVarsNumRemoved, 21.816033755274262 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 57 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 2322 NumberOfCodeBlocks, 2322 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2653 ConstructedInterpolants, 0 QuantifiedInterpolants, 2822864 SizeOfPredicates, 2 NumberOfNonLiveVariables, 550 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 1244/1807 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown