java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 17:17:01,261 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 17:17:01,263 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 17:17:01,281 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 17:17:01,281 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 17:17:01,282 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 17:17:01,283 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 17:17:01,285 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 17:17:01,287 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 17:17:01,290 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 17:17:01,291 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 17:17:01,291 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 17:17:01,292 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 17:17:01,297 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 17:17:01,302 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 17:17:01,303 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 17:17:01,304 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 17:17:01,309 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 17:17:01,312 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 17:17:01,316 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 17:17:01,319 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 17:17:01,322 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 17:17:01,325 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 17:17:01,325 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 17:17:01,325 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 17:17:01,326 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 17:17:01,327 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 17:17:01,328 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 17:17:01,329 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 17:17:01,330 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 17:17:01,330 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 17:17:01,331 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 17:17:01,336 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 17:17:01,358 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 17:17:01,358 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 17:17:01,359 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 17:17:01,359 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 17:17:01,362 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 17:17:01,363 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 17:17:01,363 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 17:17:01,363 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 17:17:01,363 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 17:17:01,364 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 17:17:01,364 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 17:17:01,364 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 17:17:01,364 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 17:17:01,365 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 17:17:01,365 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 17:17:01,365 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 17:17:01,365 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 17:17:01,366 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 17:17:01,366 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 17:17:01,366 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 17:17:01,366 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 17:17:01,366 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 17:17:01,368 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 17:17:01,368 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 17:17:01,368 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 17:17:01,368 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:17:01,368 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 17:17:01,369 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 17:17:01,369 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 17:17:01,369 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 17:17:01,369 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 17:17:01,369 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 17:17:01,370 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 17:17:01,370 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 17:17:01,370 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 17:17:01,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 17:17:01,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 17:17:01,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 17:17:01,449 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 17:17:01,450 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 17:17:01,450 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label06_true-unreach-call.c [2018-11-12 17:17:01,514 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/931258b95/9a17e159c69644fd982be9d8d98cc8c2/FLAG6021e61be [2018-11-12 17:17:02,148 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 17:17:02,151 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label06_true-unreach-call.c [2018-11-12 17:17:02,169 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/931258b95/9a17e159c69644fd982be9d8d98cc8c2/FLAG6021e61be [2018-11-12 17:17:02,185 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/931258b95/9a17e159c69644fd982be9d8d98cc8c2 [2018-11-12 17:17:02,196 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 17:17:02,198 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 17:17:02,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 17:17:02,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 17:17:02,205 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 17:17:02,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:17:02" (1/1) ... [2018-11-12 17:17:02,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce9ff51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:02, skipping insertion in model container [2018-11-12 17:17:02,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:17:02" (1/1) ... [2018-11-12 17:17:02,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 17:17:02,325 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 17:17:03,171 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:17:03,176 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 17:17:03,474 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:17:03,528 INFO L193 MainTranslator]: Completed translation [2018-11-12 17:17:03,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:03 WrapperNode [2018-11-12 17:17:03,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 17:17:03,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 17:17:03,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 17:17:03,533 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 17:17:03,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:03" (1/1) ... [2018-11-12 17:17:03,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:03" (1/1) ... [2018-11-12 17:17:03,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 17:17:03,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 17:17:03,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 17:17:03,725 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 17:17:03,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:03" (1/1) ... [2018-11-12 17:17:03,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:03" (1/1) ... [2018-11-12 17:17:03,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:03" (1/1) ... [2018-11-12 17:17:03,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:03" (1/1) ... [2018-11-12 17:17:03,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:03" (1/1) ... [2018-11-12 17:17:03,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:03" (1/1) ... [2018-11-12 17:17:03,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:03" (1/1) ... [2018-11-12 17:17:03,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 17:17:03,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 17:17:03,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 17:17:03,890 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 17:17:03,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:17:03,964 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 17:17:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 17:17:03,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 17:17:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 17:17:03,965 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 17:17:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 17:17:03,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 17:17:03,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 17:17:03,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 17:17:08,974 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 17:17:08,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:17:08 BoogieIcfgContainer [2018-11-12 17:17:08,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 17:17:08,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 17:17:08,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 17:17:08,980 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 17:17:08,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:17:02" (1/3) ... [2018-11-12 17:17:08,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d1963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:17:08, skipping insertion in model container [2018-11-12 17:17:08,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:03" (2/3) ... [2018-11-12 17:17:08,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d1963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:17:08, skipping insertion in model container [2018-11-12 17:17:08,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:17:08" (3/3) ... [2018-11-12 17:17:08,984 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label06_true-unreach-call.c [2018-11-12 17:17:08,994 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 17:17:09,003 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 17:17:09,017 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 17:17:09,058 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 17:17:09,058 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 17:17:09,059 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 17:17:09,059 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 17:17:09,059 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 17:17:09,059 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 17:17:09,059 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 17:17:09,060 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 17:17:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-12 17:17:09,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-12 17:17:09,117 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:09,118 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] [2018-11-12 17:17:09,121 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:09,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:09,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1227747913, now seen corresponding path program 1 times [2018-11-12 17:17:09,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:09,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:09,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:09,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:09,175 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:10,079 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:17:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:10,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:17:10,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:17:10,310 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:10,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:17:10,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:17:10,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:17:10,339 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-12 17:17:12,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:12,700 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-11-12 17:17:12,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:17:12,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2018-11-12 17:17:12,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:12,727 INFO L225 Difference]: With dead ends: 848 [2018-11-12 17:17:12,727 INFO L226 Difference]: Without dead ends: 534 [2018-11-12 17:17:12,735 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:17:12,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-11-12 17:17:12,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-11-12 17:17:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-11-12 17:17:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-11-12 17:17:12,825 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 176 [2018-11-12 17:17:12,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:12,826 INFO L480 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-11-12 17:17:12,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:17:12,827 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-11-12 17:17:12,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-12 17:17:12,836 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:12,836 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:17:12,837 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:12,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:12,837 INFO L82 PathProgramCache]: Analyzing trace with hash -602299443, now seen corresponding path program 1 times [2018-11-12 17:17:12,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:12,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:12,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:12,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:12,839 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:13,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:17:13,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:17:13,293 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:13,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:17:13,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:17:13,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:17:13,298 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-11-12 17:17:15,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:15,143 INFO L93 Difference]: Finished difference Result 1493 states and 2512 transitions. [2018-11-12 17:17:15,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:17:15,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2018-11-12 17:17:15,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:15,151 INFO L225 Difference]: With dead ends: 1493 [2018-11-12 17:17:15,152 INFO L226 Difference]: Without dead ends: 967 [2018-11-12 17:17:15,155 INFO L604 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 [2018-11-12 17:17:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-11-12 17:17:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 951. [2018-11-12 17:17:15,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2018-11-12 17:17:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1540 transitions. [2018-11-12 17:17:15,207 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1540 transitions. Word has length 189 [2018-11-12 17:17:15,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:15,208 INFO L480 AbstractCegarLoop]: Abstraction has 951 states and 1540 transitions. [2018-11-12 17:17:15,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:17:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1540 transitions. [2018-11-12 17:17:15,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-12 17:17:15,215 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:15,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:17:15,215 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:15,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:15,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1117769588, now seen corresponding path program 1 times [2018-11-12 17:17:15,216 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:15,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:15,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:15,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:15,218 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:15,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:17:15,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:17:15,472 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:15,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:17:15,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:17:15,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:17:15,474 INFO L87 Difference]: Start difference. First operand 951 states and 1540 transitions. Second operand 6 states. [2018-11-12 17:17:19,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:19,352 INFO L93 Difference]: Finished difference Result 2784 states and 4694 transitions. [2018-11-12 17:17:19,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:17:19,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-11-12 17:17:19,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:19,380 INFO L225 Difference]: With dead ends: 2784 [2018-11-12 17:17:19,380 INFO L226 Difference]: Without dead ends: 1839 [2018-11-12 17:17:19,386 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:17:19,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2018-11-12 17:17:19,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1809. [2018-11-12 17:17:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2018-11-12 17:17:19,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2782 transitions. [2018-11-12 17:17:19,508 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2782 transitions. Word has length 204 [2018-11-12 17:17:19,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:19,509 INFO L480 AbstractCegarLoop]: Abstraction has 1809 states and 2782 transitions. [2018-11-12 17:17:19,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:17:19,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2782 transitions. [2018-11-12 17:17:19,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-11-12 17:17:19,522 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:19,523 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:17:19,523 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:19,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:19,523 INFO L82 PathProgramCache]: Analyzing trace with hash -356667913, now seen corresponding path program 1 times [2018-11-12 17:17:19,524 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:19,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:19,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:19,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:19,526 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:19,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:17:19,902 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:17:19,903 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-11-12 17:17:19,906 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [869], [871], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:17:19,973 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:17:19,974 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:17:23,492 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:17:23,494 INFO L272 AbstractInterpreter]: Visited 180 different actions 354 times. Merged at 5 different actions 5 times. Never widened. Performed 8710 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8710 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:17:23,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:23,544 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:17:26,284 INFO L227 lantSequenceWeakener]: Weakened 75 states. On average, predicates are now at 77.43% of their original sizes. [2018-11-12 17:17:26,285 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:17:32,785 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-11-12 17:17:32,786 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:17:32,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:17:32,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 17:17:32,787 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:32,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 17:17:32,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 17:17:32,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2018-11-12 17:17:32,789 INFO L87 Difference]: Start difference. First operand 1809 states and 2782 transitions. Second operand 23 states. [2018-11-12 17:18:58,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:18:58,409 INFO L93 Difference]: Finished difference Result 4659 states and 6944 transitions. [2018-11-12 17:18:58,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-12 17:18:58,409 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 223 [2018-11-12 17:18:58,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:18:58,425 INFO L225 Difference]: With dead ends: 4659 [2018-11-12 17:18:58,425 INFO L226 Difference]: Without dead ends: 2856 [2018-11-12 17:18:58,432 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 233 GetRequests, 152 SyntacticMatches, 49 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=231, Invalid=891, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 17:18:58,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2018-11-12 17:18:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2853. [2018-11-12 17:18:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2853 states. [2018-11-12 17:18:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 3907 transitions. [2018-11-12 17:18:58,739 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 3907 transitions. Word has length 223 [2018-11-12 17:18:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:18:58,739 INFO L480 AbstractCegarLoop]: Abstraction has 2853 states and 3907 transitions. [2018-11-12 17:18:58,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 17:18:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 3907 transitions. [2018-11-12 17:18:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-11-12 17:18:58,748 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:18:58,748 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 17:18:58,749 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:18:58,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:18:58,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1245431112, now seen corresponding path program 1 times [2018-11-12 17:18:58,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:18:58,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:58,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:18:58,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:58,752 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:18:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:18:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:18:59,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:18:59,255 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:18:59,255 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-11-12 17:18:59,256 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [869], [871], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:18:59,271 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:18:59,272 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:19:02,364 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:19:02,365 INFO L272 AbstractInterpreter]: Visited 180 different actions 356 times. Merged at 5 different actions 7 times. Never widened. Performed 11286 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11286 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:19:02,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:02,375 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:19:03,622 INFO L227 lantSequenceWeakener]: Weakened 218 states. On average, predicates are now at 72.04% of their original sizes. [2018-11-12 17:19:03,622 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:19:03,922 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-11-12 17:19:03,922 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:19:03,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:19:03,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-12 17:19:03,923 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:19:03,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 17:19:03,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 17:19:03,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-11-12 17:19:03,924 INFO L87 Difference]: Start difference. First operand 2853 states and 3907 transitions. Second operand 16 states. [2018-11-12 17:20:15,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:20:15,334 INFO L93 Difference]: Finished difference Result 5530 states and 7916 transitions. [2018-11-12 17:20:15,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 17:20:15,335 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 223 [2018-11-12 17:20:15,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:20:15,352 INFO L225 Difference]: With dead ends: 5530 [2018-11-12 17:20:15,352 INFO L226 Difference]: Without dead ends: 3727 [2018-11-12 17:20:15,358 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 231 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2018-11-12 17:20:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2018-11-12 17:20:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3725. [2018-11-12 17:20:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3725 states. [2018-11-12 17:20:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3725 states to 3725 states and 4931 transitions. [2018-11-12 17:20:15,455 INFO L78 Accepts]: Start accepts. Automaton has 3725 states and 4931 transitions. Word has length 223 [2018-11-12 17:20:15,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:20:15,455 INFO L480 AbstractCegarLoop]: Abstraction has 3725 states and 4931 transitions. [2018-11-12 17:20:15,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 17:20:15,456 INFO L276 IsEmpty]: Start isEmpty. Operand 3725 states and 4931 transitions. [2018-11-12 17:20:15,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-12 17:20:15,468 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:20:15,468 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:20:15,468 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:20:15,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:15,469 INFO L82 PathProgramCache]: Analyzing trace with hash -297463297, now seen corresponding path program 1 times [2018-11-12 17:20:15,469 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:20:15,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:15,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:15,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:15,470 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:20:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:15,776 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-12 17:20:15,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:20:15,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:20:15,777 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:20:15,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:20:15,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:20:15,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:20:15,778 INFO L87 Difference]: Start difference. First operand 3725 states and 4931 transitions. Second operand 3 states. [2018-11-12 17:20:16,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:20:16,959 INFO L93 Difference]: Finished difference Result 8521 states and 12261 transitions. [2018-11-12 17:20:16,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:20:16,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2018-11-12 17:20:16,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:20:16,993 INFO L225 Difference]: With dead ends: 8521 [2018-11-12 17:20:16,993 INFO L226 Difference]: Without dead ends: 5846 [2018-11-12 17:20:17,007 INFO L604 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 [2018-11-12 17:20:17,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2018-11-12 17:20:17,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 5840. [2018-11-12 17:20:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5840 states. [2018-11-12 17:20:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 7940 transitions. [2018-11-12 17:20:17,162 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 7940 transitions. Word has length 224 [2018-11-12 17:20:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:20:17,163 INFO L480 AbstractCegarLoop]: Abstraction has 5840 states and 7940 transitions. [2018-11-12 17:20:17,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:20:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 7940 transitions. [2018-11-12 17:20:17,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-11-12 17:20:17,182 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:20:17,183 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:20:17,183 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:20:17,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:17,184 INFO L82 PathProgramCache]: Analyzing trace with hash -595480447, now seen corresponding path program 1 times [2018-11-12 17:20:17,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:20:17,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:17,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:17,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:17,185 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:20:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-12 17:20:17,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:17,717 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:20:17,719 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-11-12 17:20:17,719 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [869], [871], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:20:17,737 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:20:17,737 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:20:20,903 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:20:20,903 INFO L272 AbstractInterpreter]: Visited 182 different actions 539 times. Merged at 7 different actions 17 times. Never widened. Performed 13068 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13068 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-12 17:20:20,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:20,912 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:20:20,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:20,912 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:20:20,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:20,922 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:20:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:21,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:20:21,376 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-12 17:20:21,376 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:20:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-12 17:20:21,891 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:20:21,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-11-12 17:20:21,891 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:20:21,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:20:21,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:20:21,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:20:21,893 INFO L87 Difference]: Start difference. First operand 5840 states and 7940 transitions. Second operand 3 states. [2018-11-12 17:20:23,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:20:23,360 INFO L93 Difference]: Finished difference Result 10213 states and 14363 transitions. [2018-11-12 17:20:23,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:20:23,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 249 [2018-11-12 17:20:23,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:20:23,389 INFO L225 Difference]: With dead ends: 10213 [2018-11-12 17:20:23,390 INFO L226 Difference]: Without dead ends: 5842 [2018-11-12 17:20:23,408 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:20:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5842 states. [2018-11-12 17:20:23,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5842 to 5840. [2018-11-12 17:20:23,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5840 states. [2018-11-12 17:20:23,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 7543 transitions. [2018-11-12 17:20:23,549 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 7543 transitions. Word has length 249 [2018-11-12 17:20:23,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:20:23,549 INFO L480 AbstractCegarLoop]: Abstraction has 5840 states and 7543 transitions. [2018-11-12 17:20:23,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:20:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 7543 transitions. [2018-11-12 17:20:23,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-12 17:20:23,569 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:20:23,569 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-11-12 17:20:23,570 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:20:23,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:23,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1821939352, now seen corresponding path program 1 times [2018-11-12 17:20:23,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:20:23,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:23,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:23,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:23,572 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:20:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:23,874 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:20:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 84 proven. 59 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-12 17:20:24,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:24,135 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:20:24,135 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-11-12 17:20:24,136 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [869], [871], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:20:24,143 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:20:24,143 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:20:27,436 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:20:27,436 INFO L272 AbstractInterpreter]: Visited 183 different actions 545 times. Merged at 7 different actions 20 times. Never widened. Performed 16438 root evaluator evaluations with a maximum evaluation depth of 6. Performed 16438 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-12 17:20:27,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:27,443 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:20:27,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:27,443 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:20:27,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:27,455 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:20:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:27,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:20:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-12 17:20:27,809 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:20:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 20 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-12 17:20:28,222 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:20:28,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-12 17:20:28,222 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:20:28,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 17:20:28,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 17:20:28,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-12 17:20:28,224 INFO L87 Difference]: Start difference. First operand 5840 states and 7543 transitions. Second operand 12 states. [2018-11-12 17:20:34,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:20:34,035 INFO L93 Difference]: Finished difference Result 18051 states and 25688 transitions. [2018-11-12 17:20:34,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 17:20:34,038 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 263 [2018-11-12 17:20:34,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:20:34,105 INFO L225 Difference]: With dead ends: 18051 [2018-11-12 17:20:34,105 INFO L226 Difference]: Without dead ends: 13261 [2018-11-12 17:20:34,147 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 548 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-11-12 17:20:34,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13261 states. [2018-11-12 17:20:34,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13261 to 13257. [2018-11-12 17:20:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13257 states. [2018-11-12 17:20:34,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13257 states to 13257 states and 17808 transitions. [2018-11-12 17:20:34,555 INFO L78 Accepts]: Start accepts. Automaton has 13257 states and 17808 transitions. Word has length 263 [2018-11-12 17:20:34,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:20:34,555 INFO L480 AbstractCegarLoop]: Abstraction has 13257 states and 17808 transitions. [2018-11-12 17:20:34,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-12 17:20:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand 13257 states and 17808 transitions. [2018-11-12 17:20:34,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-11-12 17:20:34,624 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:20:34,624 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 17:20:34,625 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:20:34,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:34,625 INFO L82 PathProgramCache]: Analyzing trace with hash -759076715, now seen corresponding path program 1 times [2018-11-12 17:20:34,625 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:20:34,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:34,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:34,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:34,627 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:20:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 141 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-11-12 17:20:35,173 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:35,173 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:20:35,173 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 317 with the following transitions: [2018-11-12 17:20:35,174 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [869], [871], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:20:35,179 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:20:35,179 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:20:39,752 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:20:39,752 INFO L272 AbstractInterpreter]: Visited 183 different actions 726 times. Merged at 8 different actions 31 times. Never widened. Performed 16037 root evaluator evaluations with a maximum evaluation depth of 6. Performed 16037 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 6 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-12 17:20:39,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:39,758 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:20:41,747 INFO L227 lantSequenceWeakener]: Weakened 313 states. On average, predicates are now at 71.44% of their original sizes. [2018-11-12 17:20:41,747 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:20:42,515 INFO L415 sIntCurrentIteration]: We unified 315 AI predicates to 315 [2018-11-12 17:20:42,515 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:20:42,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:20:42,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [27] imperfect sequences [5] total 30 [2018-11-12 17:20:42,516 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:20:42,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-12 17:20:42,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-12 17:20:42,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2018-11-12 17:20:42,518 INFO L87 Difference]: Start difference. First operand 13257 states and 17808 transitions. Second operand 27 states. Received shutdown request... [2018-11-12 17:20:59,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-12 17:20:59,538 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:20:59,543 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:20:59,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:20:59 BoogieIcfgContainer [2018-11-12 17:20:59,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:20:59,544 INFO L168 Benchmark]: Toolchain (without parser) took 237347.39 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 1.8 GB in the end (delta: -378.5 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-12 17:20:59,545 INFO L168 Benchmark]: CDTParser took 1.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:20:59,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1330.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-12 17:20:59,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 191.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.6 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2018-11-12 17:20:59,548 INFO L168 Benchmark]: Boogie Preprocessor took 162.78 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:20:59,548 INFO L168 Benchmark]: RCFGBuilder took 5085.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 254.0 MB). Peak memory consumption was 254.0 MB. Max. memory is 7.1 GB. [2018-11-12 17:20:59,549 INFO L168 Benchmark]: TraceAbstraction took 230567.53 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 166.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-12 17:20:59,555 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.55 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 1330.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 191.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.6 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.78 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 5085.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 254.0 MB). Peak memory consumption was 254.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230567.53 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.8 GB in the end (delta: 166.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1542]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1542). Cancelled while BasicCegarLoop was constructing difference of abstraction (13257states) and FLOYD_HOARE automaton (currently 15 states, 27 states before enhancement),while ReachableStatesComputation was computing reachable states (529 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 230.4s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 190.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2199 SDtfs, 10600 SDslu, 2644 SDs, 0 SdLazy, 17678 SolverSat, 2722 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 122.0s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1905 GetRequests, 1706 SyntacticMatches, 54 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13257occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.8s AbstIntTime, 5 AbstIntIterations, 3 AbstIntStrong, 0.9989570852879622 AbsIntWeakeningRatio, 0.26613965744400525 AbsIntAvgWeakeningVarsNumRemoved, 53.546772068511196 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 65 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 2579 NumberOfCodeBlocks, 2579 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3078 ConstructedInterpolants, 0 QuantifiedInterpolants, 1373904 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2604 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 1138/1233 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown