java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label14_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:12:38,916 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:12:38,919 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:12:38,934 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:12:38,935 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:12:38,936 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:12:38,937 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:12:38,939 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:12:38,940 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:12:38,941 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:12:38,942 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:12:38,942 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:12:38,943 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:12:38,944 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:12:38,945 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:12:38,946 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:12:38,947 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:12:38,948 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:12:38,950 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:12:38,952 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:12:38,953 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:12:38,954 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:12:38,957 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 19:12:38,957 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 19:12:38,957 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 19:12:38,958 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 19:12:38,959 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 19:12:38,960 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 19:12:38,961 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 19:12:38,962 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 19:12:38,962 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 19:12:38,963 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 19:12:38,963 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:12:38,963 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:12:38,967 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:12:38,968 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:12:38,968 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:12:38,988 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:12:38,988 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:12:38,989 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:12:38,989 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:12:38,989 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:12:38,990 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:12:38,990 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:12:38,990 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:12:38,990 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:12:38,990 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:12:38,991 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:12:38,991 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:12:38,992 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:12:38,992 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:12:38,992 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:12:38,992 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:12:38,992 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:12:38,993 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:12:38,993 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:12:38,993 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:12:38,993 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:12:38,994 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:12:38,994 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:12:38,994 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:12:38,994 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:12:38,994 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:12:38,995 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:12:38,995 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:12:38,995 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:12:38,995 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:12:38,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:12:38,996 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:12:38,996 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:12:38,996 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:12:39,046 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:12:39,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:12:39,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:12:39,067 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:12:39,068 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:12:39,068 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label14_true-unreach-call_false-termination.c [2018-10-24 19:12:39,137 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/078725d5e/fa186e38c9d74419855b64e12ea2d2e5/FLAG2bb9dea89 [2018-10-24 19:12:39,722 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:12:39,724 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label14_true-unreach-call_false-termination.c [2018-10-24 19:12:39,746 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/078725d5e/fa186e38c9d74419855b64e12ea2d2e5/FLAG2bb9dea89 [2018-10-24 19:12:39,768 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/078725d5e/fa186e38c9d74419855b64e12ea2d2e5 [2018-10-24 19:12:39,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:12:39,783 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:12:39,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:12:39,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:12:39,790 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:12:39,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:12:39" (1/1) ... [2018-10-24 19:12:39,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7472627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:39, skipping insertion in model container [2018-10-24 19:12:39,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:12:39" (1/1) ... [2018-10-24 19:12:39,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:12:39,886 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:12:40,340 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:12:40,345 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:12:40,506 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:12:40,528 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:12:40,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:40 WrapperNode [2018-10-24 19:12:40,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:12:40,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:12:40,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:12:40,530 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:12:40,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:40" (1/1) ... [2018-10-24 19:12:40,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:40" (1/1) ... [2018-10-24 19:12:40,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:12:40,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:12:40,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:12:40,738 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:12:40,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:40" (1/1) ... [2018-10-24 19:12:40,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:40" (1/1) ... [2018-10-24 19:12:40,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:40" (1/1) ... [2018-10-24 19:12:40,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:40" (1/1) ... [2018-10-24 19:12:40,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:40" (1/1) ... [2018-10-24 19:12:40,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:40" (1/1) ... [2018-10-24 19:12:40,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:40" (1/1) ... [2018-10-24 19:12:40,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:12:40,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:12:40,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:12:40,861 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:12:40,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:12:40,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:12:40,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:12:40,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:12:40,936 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:12:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:12:40,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:12:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:12:40,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:12:44,242 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:12:44,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:12:44 BoogieIcfgContainer [2018-10-24 19:12:44,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:12:44,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:12:44,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:12:44,248 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:12:44,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:12:39" (1/3) ... [2018-10-24 19:12:44,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d2057d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:12:44, skipping insertion in model container [2018-10-24 19:12:44,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:12:40" (2/3) ... [2018-10-24 19:12:44,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d2057d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:12:44, skipping insertion in model container [2018-10-24 19:12:44,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:12:44" (3/3) ... [2018-10-24 19:12:44,252 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label14_true-unreach-call_false-termination.c [2018-10-24 19:12:44,262 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:12:44,271 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:12:44,289 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:12:44,337 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:12:44,338 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:12:44,338 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:12:44,338 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:12:44,338 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:12:44,339 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:12:44,339 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:12:44,339 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:12:44,386 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-24 19:12:44,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-24 19:12:44,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:12:44,410 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:12:44,416 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:12:44,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:12:44,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1783775568, now seen corresponding path program 1 times [2018-10-24 19:12:44,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:12:44,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:44,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:12:44,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:44,484 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:12:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:12:45,097 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:12:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:12:45,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:12:45,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:12:45,252 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:12:45,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:12:45,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:12:45,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:12:45,277 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-24 19:12:46,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:12:46,770 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-24 19:12:46,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:12:46,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2018-10-24 19:12:46,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:12:46,797 INFO L225 Difference]: With dead ends: 550 [2018-10-24 19:12:46,797 INFO L226 Difference]: Without dead ends: 340 [2018-10-24 19:12:46,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:12:46,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-24 19:12:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-24 19:12:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-24 19:12:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 541 transitions. [2018-10-24 19:12:46,877 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 541 transitions. Word has length 138 [2018-10-24 19:12:46,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:12:46,878 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 541 transitions. [2018-10-24 19:12:46,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:12:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 541 transitions. [2018-10-24 19:12:46,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 19:12:46,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:12:46,886 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:12:46,886 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:12:46,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:12:46,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1808650351, now seen corresponding path program 1 times [2018-10-24 19:12:46,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:12:46,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:46,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:12:46,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:46,889 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:12:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:12:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:12:47,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:12:47,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:12:47,105 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:12:47,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:12:47,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:12:47,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:12:47,109 INFO L87 Difference]: Start difference. First operand 340 states and 541 transitions. Second operand 6 states. [2018-10-24 19:12:49,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:12:49,095 INFO L93 Difference]: Finished difference Result 1075 states and 1784 transitions. [2018-10-24 19:12:49,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:12:49,100 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-10-24 19:12:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:12:49,111 INFO L225 Difference]: With dead ends: 1075 [2018-10-24 19:12:49,111 INFO L226 Difference]: Without dead ends: 741 [2018-10-24 19:12:49,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:12:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-10-24 19:12:49,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 724. [2018-10-24 19:12:49,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-10-24 19:12:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1120 transitions. [2018-10-24 19:12:49,172 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1120 transitions. Word has length 149 [2018-10-24 19:12:49,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:12:49,172 INFO L481 AbstractCegarLoop]: Abstraction has 724 states and 1120 transitions. [2018-10-24 19:12:49,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:12:49,173 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1120 transitions. [2018-10-24 19:12:49,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-24 19:12:49,181 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:12:49,182 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:12:49,182 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:12:49,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:12:49,183 INFO L82 PathProgramCache]: Analyzing trace with hash 2122506691, now seen corresponding path program 1 times [2018-10-24 19:12:49,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:12:49,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:49,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:12:49,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:49,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:12:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:12:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:12:49,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:12:49,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:12:49,709 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:12:49,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:12:49,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:12:49,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:12:49,712 INFO L87 Difference]: Start difference. First operand 724 states and 1120 transitions. Second operand 5 states. [2018-10-24 19:12:52,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:12:52,229 INFO L93 Difference]: Finished difference Result 1578 states and 2483 transitions. [2018-10-24 19:12:52,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:12:52,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2018-10-24 19:12:52,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:12:52,236 INFO L225 Difference]: With dead ends: 1578 [2018-10-24 19:12:52,236 INFO L226 Difference]: Without dead ends: 721 [2018-10-24 19:12:52,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:12:52,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2018-10-24 19:12:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2018-10-24 19:12:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2018-10-24 19:12:52,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1044 transitions. [2018-10-24 19:12:52,272 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1044 transitions. Word has length 150 [2018-10-24 19:12:52,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:12:52,273 INFO L481 AbstractCegarLoop]: Abstraction has 721 states and 1044 transitions. [2018-10-24 19:12:52,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:12:52,273 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1044 transitions. [2018-10-24 19:12:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-24 19:12:52,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:12:52,278 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:12:52,279 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:12:52,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:12:52,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1419468101, now seen corresponding path program 1 times [2018-10-24 19:12:52,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:12:52,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:52,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:12:52,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:52,281 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:12:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:12:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:12:52,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:12:52,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:12:52,522 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:12:52,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:12:52,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:12:52,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:12:52,524 INFO L87 Difference]: Start difference. First operand 721 states and 1044 transitions. Second operand 3 states. [2018-10-24 19:12:54,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:12:54,290 INFO L93 Difference]: Finished difference Result 2069 states and 3084 transitions. [2018-10-24 19:12:54,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:12:54,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2018-10-24 19:12:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:12:54,307 INFO L225 Difference]: With dead ends: 2069 [2018-10-24 19:12:54,307 INFO L226 Difference]: Without dead ends: 1354 [2018-10-24 19:12:54,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:12:54,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-10-24 19:12:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1347. [2018-10-24 19:12:54,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1347 states. [2018-10-24 19:12:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1892 transitions. [2018-10-24 19:12:54,367 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1892 transitions. Word has length 154 [2018-10-24 19:12:54,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:12:54,368 INFO L481 AbstractCegarLoop]: Abstraction has 1347 states and 1892 transitions. [2018-10-24 19:12:54,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:12:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1892 transitions. [2018-10-24 19:12:54,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-24 19:12:54,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:12:54,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:12:54,378 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:12:54,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:12:54,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1446107199, now seen corresponding path program 1 times [2018-10-24 19:12:54,378 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:12:54,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:54,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:12:54,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:54,380 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:12:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:12:54,707 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:12:54,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:12:54,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 19:12:54,708 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:12:54,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 19:12:54,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 19:12:54,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:12:54,710 INFO L87 Difference]: Start difference. First operand 1347 states and 1892 transitions. Second operand 4 states. [2018-10-24 19:12:55,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:12:55,999 INFO L93 Difference]: Finished difference Result 3232 states and 4626 transitions. [2018-10-24 19:12:56,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:12:56,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2018-10-24 19:12:56,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:12:56,017 INFO L225 Difference]: With dead ends: 3232 [2018-10-24 19:12:56,017 INFO L226 Difference]: Without dead ends: 1891 [2018-10-24 19:12:56,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 19:12:56,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2018-10-24 19:12:56,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1891. [2018-10-24 19:12:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1891 states. [2018-10-24 19:12:56,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2551 transitions. [2018-10-24 19:12:56,078 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2551 transitions. Word has length 173 [2018-10-24 19:12:56,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:12:56,078 INFO L481 AbstractCegarLoop]: Abstraction has 1891 states and 2551 transitions. [2018-10-24 19:12:56,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 19:12:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2551 transitions. [2018-10-24 19:12:56,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-24 19:12:56,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:12:56,088 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 19:12:56,088 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:12:56,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:12:56,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1915591307, now seen corresponding path program 1 times [2018-10-24 19:12:56,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:12:56,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:56,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:12:56,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:12:56,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:12:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:12:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 72 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 19:12:56,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:12:56,340 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:12:56,341 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2018-10-24 19:12:56,344 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [49], [50], [54], [58], [62], [66], [70], [73], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [697], [705], [713], [721], [729], [737], [741], [743], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 19:12:56,421 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:12:56,422 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:13:05,740 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:13:05,742 INFO L272 AbstractInterpreter]: Visited 70 different actions 70 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-10-24 19:13:05,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:13:05,777 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:13:08,988 INFO L232 lantSequenceWeakener]: Weakened 119 states. On average, predicates are now at 79.88% of their original sizes. [2018-10-24 19:13:08,988 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:13:10,194 INFO L413 sIntCurrentIteration]: We have 199 unified AI predicates [2018-10-24 19:13:10,195 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:13:10,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:13:10,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-24 19:13:10,196 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:13:10,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 19:13:10,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 19:13:10,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-24 19:13:10,198 INFO L87 Difference]: Start difference. First operand 1891 states and 2551 transitions. Second operand 12 states. [2018-10-24 19:13:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:13:26,099 INFO L93 Difference]: Finished difference Result 3837 states and 5174 transitions. [2018-10-24 19:13:26,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 19:13:26,099 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 200 [2018-10-24 19:13:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:13:26,110 INFO L225 Difference]: With dead ends: 3837 [2018-10-24 19:13:26,111 INFO L226 Difference]: Without dead ends: 1952 [2018-10-24 19:13:26,117 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 205 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-10-24 19:13:26,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2018-10-24 19:13:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1952. [2018-10-24 19:13:26,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1952 states. [2018-10-24 19:13:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2617 transitions. [2018-10-24 19:13:26,178 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2617 transitions. Word has length 200 [2018-10-24 19:13:26,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:13:26,179 INFO L481 AbstractCegarLoop]: Abstraction has 1952 states and 2617 transitions. [2018-10-24 19:13:26,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 19:13:26,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2617 transitions. [2018-10-24 19:13:26,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-24 19:13:26,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:13:26,190 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-24 19:13:26,190 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:13:26,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:13:26,191 INFO L82 PathProgramCache]: Analyzing trace with hash 191855448, now seen corresponding path program 1 times [2018-10-24 19:13:26,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:13:26,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:13:26,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:13:26,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:13:26,193 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:13:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:13:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 90 proven. 41 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 19:13:27,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:13:27,043 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:13:27,043 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-10-24 19:13:27,044 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [49], [50], [54], [58], [62], [66], [70], [73], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [697], [705], [713], [721], [729], [737], [741], [743], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 19:13:27,052 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:13:27,052 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:13:55,112 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:13:55,113 INFO L272 AbstractInterpreter]: Visited 144 different actions 212 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-24 19:13:55,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:13:55,120 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:14:00,976 INFO L232 lantSequenceWeakener]: Weakened 161 states. On average, predicates are now at 81.06% of their original sizes. [2018-10-24 19:14:00,976 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:14:49,436 INFO L413 sIntCurrentIteration]: We have 208 unified AI predicates [2018-10-24 19:14:49,437 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:14:49,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:14:49,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [9] total 23 [2018-10-24 19:14:49,437 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:14:49,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 19:14:49,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 19:14:49,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-10-24 19:14:49,439 INFO L87 Difference]: Start difference. First operand 1952 states and 2617 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 19:16:58,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 19:16:58,071 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:16:58,077 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:16:58,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:16:58 BoogieIcfgContainer [2018-10-24 19:16:58,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:16:58,078 INFO L168 Benchmark]: Toolchain (without parser) took 258297.04 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.7 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 688.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:16:58,080 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:16:58,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:16:58,081 INFO L168 Benchmark]: Boogie Procedure Inliner took 208.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -817.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:16:58,082 INFO L168 Benchmark]: Boogie Preprocessor took 122.25 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:16:58,082 INFO L168 Benchmark]: RCFGBuilder took 3382.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.7 MB). Peak memory consumption was 106.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:16:58,083 INFO L168 Benchmark]: TraceAbstraction took 253833.87 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -389.2 MB). Peak memory consumption was 625.8 MB. Max. memory is 7.1 GB. [2018-10-24 19:16:58,088 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 745.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 208.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -817.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.25 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3382.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.7 MB). Peak memory consumption was 106.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253833.87 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -389.2 MB). Peak memory consumption was 625.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 569]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 569). Cancelled while BasicCegarLoop was constructing difference of abstraction (1952states) and FLOYD_HOARE automaton (currently 23 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1560 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 253.7s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 153.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 844 SDtfs, 2814 SDslu, 710 SDs, 0 SdLazy, 3950 SolverSat, 762 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 457 GetRequests, 354 SyntacticMatches, 48 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 57.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1952occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 37.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9949404583550934 AbsIntWeakeningRatio, 0.21621621621621623 AbsIntAvgWeakeningVarsNumRemoved, 2097.7076167076166 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1173 NumberOfCodeBlocks, 1173 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1166 ConstructedInterpolants, 0 QuantifiedInterpolants, 768251 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 249/305 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown