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/Problem13_label07_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:20:15,928 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:20:15,930 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:20:15,945 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:20:15,946 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:20:15,947 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:20:15,949 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:20:15,951 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:20:15,954 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:20:15,955 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:20:15,957 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:20:15,959 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:20:15,961 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:20:15,962 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:20:15,963 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:20:15,963 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:20:15,974 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:20:15,976 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:20:15,978 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:20:15,979 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:20:15,980 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:20:15,981 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:20:15,984 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:20:15,984 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:20:15,984 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:20:15,985 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:20:15,986 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:20:15,987 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:20:15,987 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:20:15,989 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:20:15,989 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:20:15,989 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:20:15,990 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:20:15,990 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:20:15,991 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:20:15,991 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:20:15,992 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:20:16,007 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:20:16,007 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:20:16,008 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:20:16,008 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:20:16,009 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:20:16,009 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:20:16,009 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:20:16,009 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:20:16,009 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:20:16,010 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:20:16,010 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:20:16,010 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:20:16,010 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:20:16,011 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:20:16,011 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:20:16,011 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:20:16,012 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:20:16,012 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:20:16,012 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:20:16,012 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:20:16,012 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:20:16,013 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:20:16,013 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:20:16,013 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:20:16,013 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:20:16,013 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:20:16,014 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:20:16,014 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:20:16,014 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:20:16,014 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:20:16,014 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:20:16,015 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:20:16,015 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:20:16,015 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:20:16,015 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:20:16,059 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:20:16,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:20:16,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:20:16,077 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:20:16,078 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:20:16,079 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label07_false-unreach-call.c [2018-11-12 16:20:16,143 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87c4eac1/7048727215c24a2e988bc67fc4c2b7a7/FLAGa6feb7728 [2018-11-12 16:20:16,931 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:20:16,932 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label07_false-unreach-call.c [2018-11-12 16:20:16,972 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87c4eac1/7048727215c24a2e988bc67fc4c2b7a7/FLAGa6feb7728 [2018-11-12 16:20:16,992 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87c4eac1/7048727215c24a2e988bc67fc4c2b7a7 [2018-11-12 16:20:17,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:20:17,005 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:20:17,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:20:17,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:20:17,011 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:20:17,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:20:16" (1/1) ... [2018-11-12 16:20:17,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bdd34e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:20:17, skipping insertion in model container [2018-11-12 16:20:17,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:20:16" (1/1) ... [2018-11-12 16:20:17,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:20:17,218 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:20:18,706 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:20:18,711 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:20:19,512 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:20:19,546 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:20:19,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:20:19 WrapperNode [2018-11-12 16:20:19,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:20:19,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:20:19,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:20:19,548 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:20:19,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:20:19" (1/1) ... [2018-11-12 16:20:19,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:20:19" (1/1) ... [2018-11-12 16:20:19,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:20:19,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:20:19,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:20:19,920 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:20:19,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:20:19" (1/1) ... [2018-11-12 16:20:19,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:20:19" (1/1) ... [2018-11-12 16:20:19,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:20:19" (1/1) ... [2018-11-12 16:20:19,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:20:19" (1/1) ... [2018-11-12 16:20:20,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:20:19" (1/1) ... [2018-11-12 16:20:20,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:20:19" (1/1) ... [2018-11-12 16:20:20,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:20:19" (1/1) ... [2018-11-12 16:20:20,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:20:20,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:20:20,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:20:20,266 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:20:20,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:20:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:20:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:20:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:20:20,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:20:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 16:20:20,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 16:20:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:20:20,344 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:20:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:20:20,344 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:20:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:20:20,345 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:20:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:20:20,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:20:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:20:20,347 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:20:31,668 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:20:31,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:20:31 BoogieIcfgContainer [2018-11-12 16:20:31,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:20:31,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:20:31,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:20:31,674 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:20:31,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:20:16" (1/3) ... [2018-11-12 16:20:31,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f08ceb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:20:31, skipping insertion in model container [2018-11-12 16:20:31,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:20:19" (2/3) ... [2018-11-12 16:20:31,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f08ceb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:20:31, skipping insertion in model container [2018-11-12 16:20:31,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:20:31" (3/3) ... [2018-11-12 16:20:31,678 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label07_false-unreach-call.c [2018-11-12 16:20:31,687 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:20:31,699 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:20:31,717 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:20:31,765 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:20:31,765 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:20:31,765 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:20:31,766 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:20:31,766 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:20:31,766 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:20:31,766 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:20:31,766 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:20:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-12 16:20:31,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-12 16:20:31,817 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:20:31,818 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] [2018-11-12 16:20:31,821 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:20:31,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:20:31,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1099869660, now seen corresponding path program 1 times [2018-11-12 16:20:31,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:20:31,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:31,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:20:31,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:31,886 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:20:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:20:32,272 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:20:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:20:32,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:20:32,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:20:32,393 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:20:32,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:20:32,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:20:32,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:20:32,441 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-12 16:20:41,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:20:41,457 INFO L93 Difference]: Finished difference Result 3104 states and 5729 transitions. [2018-11-12 16:20:41,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:20:41,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-11-12 16:20:41,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:20:41,497 INFO L225 Difference]: With dead ends: 3104 [2018-11-12 16:20:41,497 INFO L226 Difference]: Without dead ends: 1982 [2018-11-12 16:20:41,507 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:20:41,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2018-11-12 16:20:41,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1965. [2018-11-12 16:20:41,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2018-11-12 16:20:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3515 transitions. [2018-11-12 16:20:41,672 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3515 transitions. Word has length 28 [2018-11-12 16:20:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:20:41,673 INFO L480 AbstractCegarLoop]: Abstraction has 1965 states and 3515 transitions. [2018-11-12 16:20:41,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:20:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3515 transitions. [2018-11-12 16:20:41,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-12 16:20:41,679 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:20:41,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:20:41,680 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:20:41,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:20:41,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1366067688, now seen corresponding path program 1 times [2018-11-12 16:20:41,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:20:41,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:41,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:20:41,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:41,682 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:20:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:20:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:20:42,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:20:42,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:20:42,072 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:20:42,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:20:42,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:20:42,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:20:42,076 INFO L87 Difference]: Start difference. First operand 1965 states and 3515 transitions. Second operand 5 states. [2018-11-12 16:20:52,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:20:52,953 INFO L93 Difference]: Finished difference Result 5645 states and 10294 transitions. [2018-11-12 16:20:52,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:20:52,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2018-11-12 16:20:52,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:20:52,991 INFO L225 Difference]: With dead ends: 5645 [2018-11-12 16:20:52,991 INFO L226 Difference]: Without dead ends: 3686 [2018-11-12 16:20:53,000 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:20:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2018-11-12 16:20:53,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3654. [2018-11-12 16:20:53,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2018-11-12 16:20:53,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5960 transitions. [2018-11-12 16:20:53,130 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5960 transitions. Word has length 98 [2018-11-12 16:20:53,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:20:53,131 INFO L480 AbstractCegarLoop]: Abstraction has 3654 states and 5960 transitions. [2018-11-12 16:20:53,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:20:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5960 transitions. [2018-11-12 16:20:53,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-12 16:20:53,139 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:20:53,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:20:53,139 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:20:53,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:20:53,140 INFO L82 PathProgramCache]: Analyzing trace with hash -230880332, now seen corresponding path program 1 times [2018-11-12 16:20:53,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:20:53,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:53,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:20:53,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:20:53,141 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:20:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:20:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:20:53,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:20:53,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:20:53,399 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:20:53,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:20:53,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:20:53,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:20:53,402 INFO L87 Difference]: Start difference. First operand 3654 states and 5960 transitions. Second operand 5 states. [2018-11-12 16:21:04,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:21:04,121 INFO L93 Difference]: Finished difference Result 10919 states and 18331 transitions. [2018-11-12 16:21:04,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:21:04,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2018-11-12 16:21:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:21:04,166 INFO L225 Difference]: With dead ends: 10919 [2018-11-12 16:21:04,166 INFO L226 Difference]: Without dead ends: 7271 [2018-11-12 16:21:04,180 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:21:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7271 states. [2018-11-12 16:21:04,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7271 to 7118. [2018-11-12 16:21:04,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7118 states. [2018-11-12 16:21:04,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7118 states to 7118 states and 10839 transitions. [2018-11-12 16:21:04,377 INFO L78 Accepts]: Start accepts. Automaton has 7118 states and 10839 transitions. Word has length 100 [2018-11-12 16:21:04,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:21:04,377 INFO L480 AbstractCegarLoop]: Abstraction has 7118 states and 10839 transitions. [2018-11-12 16:21:04,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:21:04,378 INFO L276 IsEmpty]: Start isEmpty. Operand 7118 states and 10839 transitions. [2018-11-12 16:21:04,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-12 16:21:04,380 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:21:04,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:21:04,381 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:21:04,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:21:04,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1909063656, now seen corresponding path program 1 times [2018-11-12 16:21:04,382 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:21:04,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:21:04,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:21:04,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:21:04,383 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:21:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:21:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 16:21:04,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:21:04,794 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:21:04,799 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 123 with the following transitions: [2018-11-12 16:21:04,805 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2751], [2753], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:21:04,860 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:21:04,860 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:21:05,659 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:21:05,664 INFO L272 AbstractInterpreter]: Visited 98 different actions 98 times. Never merged. Never widened. Performed 2096 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2096 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 16:21:05,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:21:05,683 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:21:06,249 INFO L227 lantSequenceWeakener]: Weakened 106 states. On average, predicates are now at 71.44% of their original sizes. [2018-11-12 16:21:06,250 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:21:06,810 INFO L415 sIntCurrentIteration]: We unified 121 AI predicates to 121 [2018-11-12 16:21:06,810 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:21:06,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:21:06,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-11-12 16:21:06,811 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:21:06,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:21:06,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:21:06,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:21:06,813 INFO L87 Difference]: Start difference. First operand 7118 states and 10839 transitions. Second operand 10 states. [2018-11-12 16:21:20,820 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:22:08,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:22:08,881 INFO L93 Difference]: Finished difference Result 15039 states and 22691 transitions. [2018-11-12 16:22:08,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:22:08,881 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 122 [2018-11-12 16:22:08,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:22:08,916 INFO L225 Difference]: With dead ends: 15039 [2018-11-12 16:22:08,916 INFO L226 Difference]: Without dead ends: 7927 [2018-11-12 16:22:08,937 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 125 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:22:08,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7927 states. [2018-11-12 16:22:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7927 to 7922. [2018-11-12 16:22:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7922 states. [2018-11-12 16:22:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7922 states to 7922 states and 11653 transitions. [2018-11-12 16:22:09,117 INFO L78 Accepts]: Start accepts. Automaton has 7922 states and 11653 transitions. Word has length 122 [2018-11-12 16:22:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:22:09,118 INFO L480 AbstractCegarLoop]: Abstraction has 7922 states and 11653 transitions. [2018-11-12 16:22:09,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:22:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 7922 states and 11653 transitions. [2018-11-12 16:22:09,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-11-12 16:22:09,123 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:22:09,123 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:22:09,123 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:22:09,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:22:09,124 INFO L82 PathProgramCache]: Analyzing trace with hash -584249028, now seen corresponding path program 1 times [2018-11-12 16:22:09,124 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:22:09,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:22:09,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:22:09,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:22:09,126 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:22:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:22:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-11-12 16:22:09,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:22:09,710 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:22:09,710 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-11-12 16:22:09,710 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2751], [2753], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:22:09,715 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:22:09,715 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:22:11,069 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:22:11,487 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:22:11,488 INFO L272 AbstractInterpreter]: Visited 109 different actions 425 times. Merged at 7 different actions 22 times. Never widened. Performed 7043 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7043 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-12 16:22:11,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:22:11,528 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:22:12,183 INFO L227 lantSequenceWeakener]: Weakened 69 states. On average, predicates are now at 71.95% of their original sizes. [2018-11-12 16:22:12,183 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:22:14,953 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-11-12 16:22:14,953 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:22:14,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:22:14,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [5] total 22 [2018-11-12 16:22:14,954 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:22:14,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:22:14,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:22:14,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:22:14,956 INFO L87 Difference]: Start difference. First operand 7922 states and 11653 transitions. Second operand 19 states. Received shutdown request... [2018-11-12 16:23:42,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-12 16:23:42,343 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:23:42,347 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:23:42,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:23:42 BoogieIcfgContainer [2018-11-12 16:23:42,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:23:42,349 INFO L168 Benchmark]: Toolchain (without parser) took 205344.68 ms. Allocated memory was 1.5 GB in the beginning and 6.8 GB in the end (delta: 5.3 GB). Free memory was 1.4 GB in the beginning and 4.7 GB in the end (delta: -3.2 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-12 16:23:42,350 INFO L168 Benchmark]: CDTParser took 0.22 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 16:23:42,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2540.63 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:23:42,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 371.77 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.4 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 67.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:23:42,352 INFO L168 Benchmark]: Boogie Preprocessor took 345.08 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:23:42,353 INFO L168 Benchmark]: RCFGBuilder took 11404.46 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 148.9 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 48.5 MB). Peak memory consumption was 654.1 MB. Max. memory is 7.1 GB. [2018-11-12 16:23:42,355 INFO L168 Benchmark]: TraceAbstraction took 190677.58 ms. Allocated memory was 2.5 GB in the beginning and 6.8 GB in the end (delta: 4.3 GB). Free memory was 2.2 GB in the beginning and 4.7 GB in the end (delta: -2.5 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-12 16:23:42,362 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2540.63 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 371.77 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.4 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 67.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 345.08 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11404.46 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 148.9 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 48.5 MB). Peak memory consumption was 654.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 190677.58 ms. Allocated memory was 2.5 GB in the beginning and 6.8 GB in the end (delta: 4.3 GB). Free memory was 2.2 GB in the beginning and 4.7 GB in the end (delta: -2.5 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 75). Cancelled while BasicCegarLoop was constructing difference of abstraction (7922states) and FLOYD_HOARE automaton (currently 23 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (10872 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 190.5s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 180.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3342 SDtfs, 15313 SDslu, 2688 SDs, 0 SdLazy, 27034 SolverSat, 4207 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 385 GetRequests, 274 SyntacticMatches, 55 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7922occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9970449263838794 AbsIntWeakeningRatio, 0.13994169096209913 AbsIntAvgWeakeningVarsNumRemoved, 7.002915451895044 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 207 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 571 NumberOfCodeBlocks, 571 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 566 ConstructedInterpolants, 0 QuantifiedInterpolants, 242155 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 148/199 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown