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.epf -i ../../../trunk/examples/svcomp/loops/lu.cmp_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 04:55:32,220 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 04:55:32,224 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 04:55:32,239 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 04:55:32,240 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 04:55:32,241 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 04:55:32,242 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 04:55:32,244 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 04:55:32,246 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 04:55:32,247 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 04:55:32,248 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 04:55:32,248 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 04:55:32,249 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 04:55:32,250 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 04:55:32,251 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 04:55:32,252 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 04:55:32,253 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 04:55:32,255 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 04:55:32,257 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 04:55:32,259 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 04:55:32,261 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 04:55:32,262 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 04:55:32,265 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 04:55:32,265 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 04:55:32,265 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 04:55:32,266 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 04:55:32,267 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 04:55:32,268 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 04:55:32,269 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 04:55:32,270 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 04:55:32,270 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 04:55:32,271 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 04:55:32,271 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 04:55:32,272 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 04:55:32,273 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 04:55:32,274 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 04:55:32,274 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 04:55:32,309 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 04:55:32,309 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 04:55:32,310 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 04:55:32,310 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 04:55:32,310 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 04:55:32,311 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 04:55:32,311 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 04:55:32,311 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 04:55:32,311 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 04:55:32,311 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 04:55:32,311 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 04:55:32,312 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 04:55:32,312 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 04:55:32,316 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 04:55:32,316 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 04:55:32,316 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 04:55:32,316 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 04:55:32,317 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 04:55:32,317 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 04:55:32,317 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 04:55:32,317 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 04:55:32,317 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 04:55:32,319 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 04:55:32,319 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 04:55:32,319 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:55:32,320 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 04:55:32,320 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 04:55:32,320 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 04:55:32,320 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 04:55:32,320 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 04:55:32,321 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 04:55:32,321 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 04:55:32,322 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 04:55:32,322 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 04:55:32,385 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 04:55:32,399 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 04:55:32,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 04:55:32,405 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 04:55:32,405 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 04:55:32,406 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp_true-unreach-call.i [2018-11-07 04:55:32,471 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1cbe99c9/23650daa10924baeaab30593138a7356/FLAGa046c5c56 [2018-11-07 04:55:33,011 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 04:55:33,015 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp_true-unreach-call.i [2018-11-07 04:55:33,024 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1cbe99c9/23650daa10924baeaab30593138a7356/FLAGa046c5c56 [2018-11-07 04:55:33,039 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1cbe99c9/23650daa10924baeaab30593138a7356 [2018-11-07 04:55:33,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 04:55:33,055 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 04:55:33,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 04:55:33,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 04:55:33,061 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 04:55:33,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:55:33" (1/1) ... [2018-11-07 04:55:33,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c61966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:33, skipping insertion in model container [2018-11-07 04:55:33,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:55:33" (1/1) ... [2018-11-07 04:55:33,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 04:55:33,105 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 04:55:33,402 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:55:33,527 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 04:55:33,573 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:55:33,717 INFO L193 MainTranslator]: Completed translation [2018-11-07 04:55:33,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:33 WrapperNode [2018-11-07 04:55:33,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 04:55:33,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 04:55:33,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 04:55:33,719 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 04:55:33,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:33" (1/1) ... [2018-11-07 04:55:33,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:33" (1/1) ... [2018-11-07 04:55:33,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 04:55:33,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 04:55:33,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 04:55:33,808 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 04:55:33,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:33" (1/1) ... [2018-11-07 04:55:33,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:33" (1/1) ... [2018-11-07 04:55:33,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:33" (1/1) ... [2018-11-07 04:55:33,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:33" (1/1) ... [2018-11-07 04:55:34,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:33" (1/1) ... [2018-11-07 04:55:34,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:33" (1/1) ... [2018-11-07 04:55:34,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:33" (1/1) ... [2018-11-07 04:55:34,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 04:55:34,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 04:55:34,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 04:55:34,141 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 04:55:34,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:33" (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 [2018-11-07 04:55:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-07 04:55:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2018-11-07 04:55:34,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2018-11-07 04:55:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 04:55:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 04:55:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2018-11-07 04:55:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2018-11-07 04:55:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-07 04:55:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-07 04:55:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 04:55:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 04:55:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 04:55:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 04:55:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-07 04:55:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 04:55:34,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 04:55:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-07 04:55:42,882 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 04:55:42,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:55:42 BoogieIcfgContainer [2018-11-07 04:55:42,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 04:55:42,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 04:55:42,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 04:55:42,889 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 04:55:42,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:55:33" (1/3) ... [2018-11-07 04:55:42,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481641eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:55:42, skipping insertion in model container [2018-11-07 04:55:42,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:55:33" (2/3) ... [2018-11-07 04:55:42,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481641eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:55:42, skipping insertion in model container [2018-11-07 04:55:42,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:55:42" (3/3) ... [2018-11-07 04:55:42,894 INFO L112 eAbstractionObserver]: Analyzing ICFG lu.cmp_true-unreach-call.i [2018-11-07 04:55:42,905 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 04:55:42,917 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 04:55:42,935 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 04:55:42,985 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 04:55:42,985 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 04:55:42,986 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 04:55:42,986 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 04:55:42,986 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 04:55:42,986 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 04:55:42,986 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 04:55:42,987 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 04:55:43,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states. [2018-11-07 04:55:43,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2617 [2018-11-07 04:55:43,218 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:55:43,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:55:43,226 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:55:43,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:43,234 INFO L82 PathProgramCache]: Analyzing trace with hash -534688526, now seen corresponding path program 1 times [2018-11-07 04:55:43,236 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:55:43,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:43,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:55:43,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:43,286 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:55:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:55:49,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:55:49,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-07 04:55:49,615 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:55:49,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 04:55:49,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 04:55:49,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 04:55:49,646 INFO L87 Difference]: Start difference. First operand 2720 states. Second operand 2 states. [2018-11-07 04:55:49,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:55:49,770 INFO L93 Difference]: Finished difference Result 2831 states and 2887 transitions. [2018-11-07 04:55:49,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 04:55:49,771 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 2616 [2018-11-07 04:55:49,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:55:49,827 INFO L225 Difference]: With dead ends: 2831 [2018-11-07 04:55:49,828 INFO L226 Difference]: Without dead ends: 2630 [2018-11-07 04:55:49,836 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 04:55:49,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2018-11-07 04:55:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2630. [2018-11-07 04:55:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2630 states. [2018-11-07 04:55:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 2632 transitions. [2018-11-07 04:55:50,036 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 2632 transitions. Word has length 2616 [2018-11-07 04:55:50,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:55:50,045 INFO L480 AbstractCegarLoop]: Abstraction has 2630 states and 2632 transitions. [2018-11-07 04:55:50,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 04:55:50,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 2632 transitions. [2018-11-07 04:55:50,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2618 [2018-11-07 04:55:50,138 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:55:50,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:55:50,141 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:55:50,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:50,142 INFO L82 PathProgramCache]: Analyzing trace with hash -39586423, now seen corresponding path program 1 times [2018-11-07 04:55:50,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:55:50,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:50,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:55:50,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:50,144 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:55:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:55:55,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:55:55,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:55:55,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 04:55:55,938 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:55:55,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 04:55:55,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 04:55:55,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:55:55,944 INFO L87 Difference]: Start difference. First operand 2630 states and 2632 transitions. Second operand 4 states. [2018-11-07 04:55:56,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:55:56,217 INFO L93 Difference]: Finished difference Result 2661 states and 2667 transitions. [2018-11-07 04:55:56,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 04:55:56,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2617 [2018-11-07 04:55:56,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:55:56,235 INFO L225 Difference]: With dead ends: 2661 [2018-11-07 04:55:56,235 INFO L226 Difference]: Without dead ends: 2640 [2018-11-07 04:55:56,237 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:55:56,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2018-11-07 04:55:56,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2632. [2018-11-07 04:55:56,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2632 states. [2018-11-07 04:55:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2632 states to 2632 states and 2634 transitions. [2018-11-07 04:55:56,294 INFO L78 Accepts]: Start accepts. Automaton has 2632 states and 2634 transitions. Word has length 2617 [2018-11-07 04:55:56,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:55:56,298 INFO L480 AbstractCegarLoop]: Abstraction has 2632 states and 2634 transitions. [2018-11-07 04:55:56,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 04:55:56,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2632 states and 2634 transitions. [2018-11-07 04:55:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2625 [2018-11-07 04:55:56,358 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:55:56,360 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:55:56,361 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:55:56,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:55:56,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1236748763, now seen corresponding path program 1 times [2018-11-07 04:55:56,362 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:55:56,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:56,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:55:56,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:55:56,366 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:55:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:56:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:56:02,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:56:02,577 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:56:02,582 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 2625 with the following transitions: [2018-11-07 04:56:02,590 INFO L202 CegarAbsIntRunner]: [187], [188], [189], [190], [191], [192], [193], [194], [195], [196], [197], [198], [199], [200], [201], [202], [203], [204], [205], [206], [207], [208], [209], [210], [211], [212], [213], [214], [215], [216], [217], [218], [219], [220], [221], [222], [223], [224], [225], [226], [227], [228], [229], [230], [231], [232], [233], [234], [235], [236], [237], [238], [239], [240], [241], [242], [243], [244], [245], [246], [247], [248], [249], [250], [251], [252], [253], [254], [255], [256], [257], [258], [259], [260], [261], [262], [263], [264], [265], [266], [267], [268], [269], [270], [271], [272], [273], [274], [275], [276], [277], [278], [279], [280], [281], [282], [283], [284], [285], 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[2625], [2626], [2627], [2628], [2629], [2630], [2631], [2632], [2633], [2634], [2635], [2636], [2637], [2638], [2639], [2640], [2641], [2642], [2643], [2644], [2645], [2646], [2647], [2648], [2649], [2650], [2651], [2652], [2653], [2654], [2655], [2656], [2657], [2658], [2659], [2660], [2661], [2662], [2663], [2664], [2665], [2666], [2667], [2668], [2669], [2670], [2671], [2672], [2673], [2674], [2675], [2676], [2677], [2678], [2679], [2680], [2681], [2682], [2683], [2684], [2685], [2686], [2687], [2688], [2689], [2690], [2691], [2692], [2693], [2694], [2695], [2696], [2697], [2698], [2699], [2700], [2701], [2702], [2703], [2704], [2705], [2706], [2707], [2708], [2709], [2710], [2711], [2712], [2713], [2714], [2715], [2716], [2717], [2718], [2719], [2720], [2721], [2722], [2723], [2724], [2725], [2726], [2727], [2728], [2729], [2730], [2731], [2732], [2733], [2734], [2735], [2736], [2737], [2738], [2739], [2740], [2741], [2742], [2743], [2744], [2745], [2746], [2747], [2748], [2749], [2750], [2751], [2752], [2753], [2754], [2755], [2756], [2757], [2758], [2759], [2760], [2761], [2762], [2763], [2764], [2765], [2766], [2767], [2768], [2769], [2770], [2771], [2772], [2773], [2774], [2775], [2776], [2777], [2778], [2779], [2780], [2781], [2782], [2783], [2784], [2785], [2786], [2787], [2788], [2789], [2790], [2791], [2804], [2808], [2813], [2817], [2820], [2822], [2823], [2831], [2833], [2834], [2836], [2850], [2853], [2855], [2863], [2864], [2865], [2867] [2018-11-07 04:56:02,699 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:56:02,700 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:56:04,005 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:56:04,008 INFO L272 AbstractInterpreter]: Visited 2616 different actions 2616 times. Never merged. Never widened. Never found a fixpoint. Largest state had 31 variables. [2018-11-07 04:56:04,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:56:04,064 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:56:08,370 INFO L227 lantSequenceWeakener]: Weakened 2616 states. On average, predicates are now at 82.24% of their original sizes. [2018-11-07 04:56:08,371 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:56:09,009 INFO L415 sIntCurrentIteration]: We unified 2623 AI predicates to 2623 [2018-11-07 04:56:09,009 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:56:09,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:56:09,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 04:56:09,012 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:56:09,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 04:56:09,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 04:56:09,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 04:56:09,016 INFO L87 Difference]: Start difference. First operand 2632 states and 2634 transitions. Second operand 8 states. [2018-11-07 04:56:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:56:56,112 INFO L93 Difference]: Finished difference Result 2677 states and 2685 transitions. [2018-11-07 04:56:56,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:56:56,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 2624 [2018-11-07 04:56:56,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:56:56,130 INFO L225 Difference]: With dead ends: 2677 [2018-11-07 04:56:56,130 INFO L226 Difference]: Without dead ends: 2654 [2018-11-07 04:56:56,131 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 2626 GetRequests, 2617 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-11-07 04:56:56,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2018-11-07 04:56:56,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2638. [2018-11-07 04:56:56,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2638 states. [2018-11-07 04:56:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 2640 transitions. [2018-11-07 04:56:56,184 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 2640 transitions. Word has length 2624 [2018-11-07 04:56:56,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:56:56,189 INFO L480 AbstractCegarLoop]: Abstraction has 2638 states and 2640 transitions. [2018-11-07 04:56:56,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 04:56:56,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 2640 transitions. [2018-11-07 04:56:56,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2628 [2018-11-07 04:56:56,240 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:56:56,242 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:56:56,243 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:56:56,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:56:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash -432866920, now seen corresponding path program 1 times [2018-11-07 04:56:56,244 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:56:56,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:56:56,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:56:56,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:56:56,246 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:56:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:57:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:57:01,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:57:01,499 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:57:01,500 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 2628 with the following transitions: [2018-11-07 04:57:01,502 INFO L202 CegarAbsIntRunner]: [187], [188], [189], [190], [191], [192], [193], [194], [195], [196], [197], [198], [199], [200], [201], [202], [203], [204], [205], [206], [207], [208], [209], [210], [211], [212], [213], [214], [215], [216], [217], [218], [219], [220], [221], [222], [223], [224], [225], [226], [227], [228], [229], [230], [231], [232], [233], [234], [235], [236], [237], [238], [239], [240], [241], [242], [243], [244], [245], [246], [247], [248], [249], [250], [251], [252], [253], [254], [255], [256], [257], [258], [259], [260], [261], [262], [263], [264], [265], [266], [267], [268], [269], [270], [271], [272], [273], [274], [275], [276], [277], [278], [279], [280], [281], [282], [283], [284], [285], 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[2625], [2626], [2627], [2628], [2629], [2630], [2631], [2632], [2633], [2634], [2635], [2636], [2637], [2638], [2639], [2640], [2641], [2642], [2643], [2644], [2645], [2646], [2647], [2648], [2649], [2650], [2651], [2652], [2653], [2654], [2655], [2656], [2657], [2658], [2659], [2660], [2661], [2662], [2663], [2664], [2665], [2666], [2667], [2668], [2669], [2670], [2671], [2672], [2673], [2674], [2675], [2676], [2677], [2678], [2679], [2680], [2681], [2682], [2683], [2684], [2685], [2686], [2687], [2688], [2689], [2690], [2691], [2692], [2693], [2694], [2695], [2696], [2697], [2698], [2699], [2700], [2701], [2702], [2703], [2704], [2705], [2706], [2707], [2708], [2709], [2710], [2711], [2712], [2713], [2714], [2715], [2716], [2717], [2718], [2719], [2720], [2721], [2722], [2723], [2724], [2725], [2726], [2727], [2728], [2729], [2730], [2731], [2732], [2733], [2734], [2735], [2736], [2737], [2738], [2739], [2740], [2741], [2742], [2743], [2744], [2745], [2746], [2747], [2748], [2749], [2750], [2751], [2752], [2753], [2754], [2755], [2756], [2757], [2758], [2759], [2760], [2761], [2762], [2763], [2764], [2765], [2766], [2767], [2768], [2769], [2770], [2771], [2772], [2773], [2774], [2775], [2776], [2777], [2778], [2779], [2780], [2781], [2782], [2783], [2784], [2785], [2786], [2787], [2788], [2789], [2790], [2791], [2804], [2808], [2813], [2817], [2820], [2822], [2823], [2826], [2827], [2828], [2829], [2833], [2834], [2836], [2850], [2853], [2855], [2863], [2864], [2865], [2867] [2018-11-07 04:57:01,524 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:57:01,524 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:57:02,130 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:57:02,131 INFO L272 AbstractInterpreter]: Visited 2622 different actions 2627 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 32 variables. [2018-11-07 04:57:02,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:57:02,170 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:57:05,307 INFO L227 lantSequenceWeakener]: Weakened 2622 states. On average, predicates are now at 82.24% of their original sizes. [2018-11-07 04:57:05,308 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:57:06,031 INFO L415 sIntCurrentIteration]: We unified 2626 AI predicates to 2626 [2018-11-07 04:57:06,031 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:57:06,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:57:06,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-11-07 04:57:06,033 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:57:06,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 04:57:06,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 04:57:06,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-07 04:57:06,037 INFO L87 Difference]: Start difference. First operand 2638 states and 2640 transitions. Second operand 10 states. [2018-11-07 04:57:52,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:57:52,705 INFO L93 Difference]: Finished difference Result 2684 states and 2693 transitions. [2018-11-07 04:57:52,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 04:57:52,705 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 2627 [2018-11-07 04:57:52,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:57:52,724 INFO L225 Difference]: With dead ends: 2684 [2018-11-07 04:57:52,724 INFO L226 Difference]: Without dead ends: 2661 [2018-11-07 04:57:52,726 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 2630 GetRequests, 2618 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2018-11-07 04:57:52,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2018-11-07 04:57:52,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 2653. [2018-11-07 04:57:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2653 states. [2018-11-07 04:57:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 2657 transitions. [2018-11-07 04:57:52,781 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 2657 transitions. Word has length 2627 [2018-11-07 04:57:52,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:57:52,785 INFO L480 AbstractCegarLoop]: Abstraction has 2653 states and 2657 transitions. [2018-11-07 04:57:52,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 04:57:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 2657 transitions. [2018-11-07 04:57:52,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2635 [2018-11-07 04:57:52,835 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:57:52,836 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:57:52,836 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:57:52,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:57:52,837 INFO L82 PathProgramCache]: Analyzing trace with hash 2042549046, now seen corresponding path program 1 times [2018-11-07 04:57:52,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:57:52,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:57:52,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:57:52,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:57:52,839 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:57:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:57:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:57:57,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:57:57,287 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:57:57,288 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 2635 with the following transitions: [2018-11-07 04:57:57,290 INFO L202 CegarAbsIntRunner]: [187], [188], [189], [190], [191], [192], [193], [194], [195], [196], [197], [198], [199], [200], [201], [202], [203], [204], [205], [206], [207], [208], [209], [210], [211], [212], [213], [214], [215], [216], [217], [218], [219], [220], [221], [222], [223], [224], [225], [226], [227], [228], [229], [230], [231], [232], [233], [234], [235], [236], [237], [238], [239], [240], [241], [242], [243], [244], [245], [246], [247], [248], [249], [250], [251], [252], [253], [254], [255], [256], [257], [258], [259], [260], [261], [262], [263], [264], [265], [266], [267], [268], [269], [270], [271], [272], [273], [274], [275], [276], [277], [278], [279], [280], [281], [282], [283], [284], [285], 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[2625], [2626], [2627], [2628], [2629], [2630], [2631], [2632], [2633], [2634], [2635], [2636], [2637], [2638], [2639], [2640], [2641], [2642], [2643], [2644], [2645], [2646], [2647], [2648], [2649], [2650], [2651], [2652], [2653], [2654], [2655], [2656], [2657], [2658], [2659], [2660], [2661], [2662], [2663], [2664], [2665], [2666], [2667], [2668], [2669], [2670], [2671], [2672], [2673], [2674], [2675], [2676], [2677], [2678], [2679], [2680], [2681], [2682], [2683], [2684], [2685], [2686], [2687], [2688], [2689], [2690], [2691], [2692], [2693], [2694], [2695], [2696], [2697], [2698], [2699], [2700], [2701], [2702], [2703], [2704], [2705], [2706], [2707], [2708], [2709], [2710], [2711], [2712], [2713], [2714], [2715], [2716], [2717], [2718], [2719], [2720], [2721], [2722], [2723], [2724], [2725], [2726], [2727], [2728], [2729], [2730], [2731], [2732], [2733], [2734], [2735], [2736], [2737], [2738], [2739], [2740], [2741], [2742], [2743], [2744], [2745], [2746], [2747], [2748], [2749], [2750], [2751], [2752], [2753], [2754], [2755], [2756], [2757], [2758], [2759], [2760], [2761], [2762], [2763], [2764], [2765], [2766], [2767], [2768], [2769], [2770], [2771], [2772], [2773], [2774], [2775], [2776], [2777], [2778], [2779], [2780], [2781], [2782], [2783], [2784], [2785], [2786], [2787], [2788], [2789], [2790], [2791], [2804], [2808], [2813], [2817], [2820], [2822], [2823], [2826], [2827], [2828], [2829], [2831], [2833], [2834], [2836], [2850], [2853], [2855], [2863], [2864], [2865], [2867] [2018-11-07 04:57:57,308 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:57:57,308 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:57:58,428 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:57:58,428 INFO L272 AbstractInterpreter]: Visited 2626 different actions 2677 times. Merged at 10 different actions 40 times. Widened at 1 different actions 2 times. Found 6 fixpoints after 3 different actions. Largest state had 32 variables. [2018-11-07 04:57:58,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:57:58,466 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:58:00,986 INFO L227 lantSequenceWeakener]: Weakened 2632 states. On average, predicates are now at 82.23% of their original sizes. [2018-11-07 04:58:00,986 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:58:01,860 INFO L415 sIntCurrentIteration]: We unified 2633 AI predicates to 2633 [2018-11-07 04:58:01,860 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:58:01,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:58:01,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-11-07 04:58:01,861 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:58:01,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 04:58:01,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 04:58:01,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-11-07 04:58:01,864 INFO L87 Difference]: Start difference. First operand 2653 states and 2657 transitions. Second operand 14 states. [2018-11-07 04:58:49,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:58:49,806 INFO L93 Difference]: Finished difference Result 2662 states and 2666 transitions. [2018-11-07 04:58:49,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 04:58:49,806 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 2634 [2018-11-07 04:58:49,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:58:49,821 INFO L225 Difference]: With dead ends: 2662 [2018-11-07 04:58:49,822 INFO L226 Difference]: Without dead ends: 2660 [2018-11-07 04:58:49,823 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 2640 GetRequests, 2617 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2018-11-07 04:58:49,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2018-11-07 04:58:49,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2658. [2018-11-07 04:58:49,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2658 states. [2018-11-07 04:58:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 2662 transitions. [2018-11-07 04:58:49,869 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 2662 transitions. Word has length 2634 [2018-11-07 04:58:49,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:58:49,873 INFO L480 AbstractCegarLoop]: Abstraction has 2658 states and 2662 transitions. [2018-11-07 04:58:49,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-07 04:58:49,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 2662 transitions. [2018-11-07 04:58:49,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2653 [2018-11-07 04:58:49,963 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:58:49,965 INFO L375 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:58:49,965 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:58:49,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:58:49,966 INFO L82 PathProgramCache]: Analyzing trace with hash 11401941, now seen corresponding path program 1 times [2018-11-07 04:58:49,966 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:58:49,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:58:49,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:58:49,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:58:49,968 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:58:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:58:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-07 04:58:54,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:58:54,535 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:58:54,536 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 2653 with the following transitions: [2018-11-07 04:58:54,537 INFO L202 CegarAbsIntRunner]: [187], [188], [189], [190], [191], [192], [193], [194], [195], [196], [197], [198], [199], [200], [201], [202], [203], [204], [205], [206], [207], [208], [209], [210], [211], [212], [213], [214], [215], [216], [217], [218], [219], [220], [221], [222], [223], [224], [225], [226], [227], [228], [229], [230], [231], [232], [233], [234], [235], [236], [237], [238], [239], [240], [241], [242], [243], [244], [245], [246], [247], [248], [249], [250], [251], [252], [253], [254], [255], [256], [257], [258], [259], [260], [261], [262], [263], [264], [265], [266], [267], [268], [269], [270], [271], [272], [273], [274], [275], [276], [277], [278], [279], [280], [281], [282], [283], [284], [285], 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[2750], [2751], [2752], [2753], [2754], [2755], [2756], [2757], [2758], [2759], [2760], [2761], [2762], [2763], [2764], [2765], [2766], [2767], [2768], [2769], [2770], [2771], [2772], [2773], [2774], [2775], [2776], [2777], [2778], [2779], [2780], [2781], [2782], [2783], [2784], [2785], [2786], [2787], [2788], [2789], [2790], [2791], [2804], [2808], [2813], [2817], [2820], [2822], [2823], [2826], [2827], [2828], [2829], [2831], [2833], [2834], [2836], [2841], [2843], [2850], [2853], [2855], [2858], [2860], [2863], [2864], [2865], [2867], [2868] [2018-11-07 04:58:54,554 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:58:54,555 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:58:55,801 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:58:55,802 INFO L272 AbstractInterpreter]: Visited 2631 different actions 2812 times. Merged at 17 different actions 134 times. Widened at 3 different actions 10 times. Found 18 fixpoints after 6 different actions. Largest state had 33 variables. [2018-11-07 04:58:55,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:58:55,806 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:58:57,675 INFO L227 lantSequenceWeakener]: Weakened 2650 states. On average, predicates are now at 81.6% of their original sizes. [2018-11-07 04:58:57,676 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:58:58,720 INFO L415 sIntCurrentIteration]: We unified 2651 AI predicates to 2651 [2018-11-07 04:58:58,721 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:58:58,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:58:58,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [7] total 26 [2018-11-07 04:58:58,722 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:58:58,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 04:58:58,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 04:58:58,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2018-11-07 04:58:58,727 INFO L87 Difference]: Start difference. First operand 2658 states and 2662 transitions. Second operand 21 states. Received shutdown request... [2018-11-07 04:59:11,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 04:59:11,763 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 04:59:11,769 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 04:59:11,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:59:11 BoogieIcfgContainer [2018-11-07 04:59:11,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 04:59:11,770 INFO L168 Benchmark]: Toolchain (without parser) took 218716.24 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 04:59:11,772 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-11-07 04:59:11,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.22 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. [2018-11-07 04:59:11,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 04:59:11,774 INFO L168 Benchmark]: Boogie Preprocessor took 331.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2018-11-07 04:59:11,774 INFO L168 Benchmark]: RCFGBuilder took 8744.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 492.2 MB). Peak memory consumption was 492.2 MB. Max. memory is 7.1 GB. [2018-11-07 04:59:11,775 INFO L168 Benchmark]: TraceAbstraction took 208884.20 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -978.6 MB). Peak memory consumption was 884.2 MB. Max. memory is 7.1 GB. [2018-11-07 04:59:11,780 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 662.22 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 88.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 331.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8744.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 492.2 MB). Peak memory consumption was 492.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208884.20 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -978.6 MB). Peak memory consumption was 884.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 5]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 5). Cancelled while BasicCegarLoop was constructing difference of abstraction (2658states) and FLOYD_HOARE automaton (currently 3 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (715 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 2720 locations, 1 error locations. TIMEOUT Result, 208.7s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 155.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5418 SDtfs, 848 SDslu, 2872 SDs, 0 SdLazy, 65 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.0s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 10553 GetRequests, 10481 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2720occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.6s AbstIntTime, 4 AbstIntIterations, 4 AbstIntStrong, 0.999638080045222 AbsIntWeakeningRatio, 0.010918067027437577 AbsIntAvgWeakeningVarsNumRemoved, 28.922529193961836 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 5.7s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 15770 NumberOfCodeBlocks, 15770 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 15764 ConstructedInterpolants, 0 QuantifiedInterpolants, 42282032 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 16/55 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown