java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:09:34,667 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:09:34,669 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:09:34,681 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:09:34,681 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:09:34,682 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:09:34,683 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:09:34,685 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:09:34,687 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:09:34,687 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:09:34,688 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:09:34,689 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:09:34,690 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:09:34,691 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:09:34,692 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:09:34,693 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:09:34,693 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:09:34,695 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:09:34,697 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:09:34,699 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:09:34,700 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:09:34,701 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:09:34,704 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 00:09:34,704 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 00:09:34,704 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 00:09:34,705 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 00:09:34,706 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 00:09:34,707 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 00:09:34,708 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 00:09:34,709 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 00:09:34,709 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 00:09:34,710 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 00:09:34,712 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 00:09:34,737 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:09:34,737 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:09:34,738 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:09:34,738 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:09:34,738 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:09:34,739 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:09:34,739 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:09:34,739 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:09:34,739 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:09:34,740 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:09:34,740 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:09:34,740 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:09:34,740 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:09:34,740 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:09:34,741 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:09:34,741 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:09:34,741 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:09:34,742 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:09:34,743 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:09:34,743 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:09:34,743 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:09:34,743 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:09:34,744 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:09:34,744 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:09:34,744 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:09:34,744 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:09:34,744 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:09:34,744 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:09:34,745 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:09:34,745 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:09:34,746 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:09:34,746 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:09:34,746 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:09:34,746 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:09:34,746 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:09:34,747 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:09:34,816 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:09:34,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:09:34,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:09:34,834 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:09:34,834 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:09:34,835 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label06_true-unreach-call.c [2018-10-25 00:09:34,893 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c221f43ed/0fe38f8ed0f34c9c9190fb339fdbe566/FLAG2b29b15d2 [2018-10-25 00:09:35,576 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:09:35,579 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label06_true-unreach-call.c [2018-10-25 00:09:35,603 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c221f43ed/0fe38f8ed0f34c9c9190fb339fdbe566/FLAG2b29b15d2 [2018-10-25 00:09:35,623 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c221f43ed/0fe38f8ed0f34c9c9190fb339fdbe566 [2018-10-25 00:09:35,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:09:35,639 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:09:35,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:09:35,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:09:35,648 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:09:35,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:09:35" (1/1) ... [2018-10-25 00:09:35,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f871d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:35, skipping insertion in model container [2018-10-25 00:09:35,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:09:35" (1/1) ... [2018-10-25 00:09:35,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:09:35,776 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:09:36,538 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:09:36,546 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:09:36,836 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:09:36,860 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:09:36,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:36 WrapperNode [2018-10-25 00:09:36,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:09:36,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:09:36,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:09:36,863 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:09:36,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:36" (1/1) ... [2018-10-25 00:09:36,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:36" (1/1) ... [2018-10-25 00:09:37,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:09:37,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:09:37,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:09:37,180 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:09:37,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:36" (1/1) ... [2018-10-25 00:09:37,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:36" (1/1) ... [2018-10-25 00:09:37,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:36" (1/1) ... [2018-10-25 00:09:37,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:36" (1/1) ... [2018-10-25 00:09:37,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:36" (1/1) ... [2018-10-25 00:09:37,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:36" (1/1) ... [2018-10-25 00:09:37,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:36" (1/1) ... [2018-10-25 00:09:37,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:09:37,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:09:37,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:09:37,308 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:09:37,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:09:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:09:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:09:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:09:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:09:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:09:37,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:09:37,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:09:37,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:09:42,362 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:09:42,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:09:42 BoogieIcfgContainer [2018-10-25 00:09:42,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:09:42,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:09:42,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:09:42,373 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:09:42,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:09:35" (1/3) ... [2018-10-25 00:09:42,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a76977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:09:42, skipping insertion in model container [2018-10-25 00:09:42,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:36" (2/3) ... [2018-10-25 00:09:42,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a76977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:09:42, skipping insertion in model container [2018-10-25 00:09:42,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:09:42" (3/3) ... [2018-10-25 00:09:42,380 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label06_true-unreach-call.c [2018-10-25 00:09:42,391 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:09:42,404 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:09:42,424 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:09:42,466 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:09:42,466 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:09:42,466 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:09:42,466 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:09:42,466 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:09:42,467 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:09:42,467 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:09:42,467 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:09:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:09:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-25 00:09:42,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:42,522 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] [2018-10-25 00:09:42,524 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:42,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:42,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1227747913, now seen corresponding path program 1 times [2018-10-25 00:09:42,532 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:42,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:42,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:42,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:42,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:43,460 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:09:43,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:43,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:09:43,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:09:43,685 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:43,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:09:43,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:09:43,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:09:43,717 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-25 00:09:45,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:09:45,792 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-10-25 00:09:45,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:09:45,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2018-10-25 00:09:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:09:45,821 INFO L225 Difference]: With dead ends: 848 [2018-10-25 00:09:45,822 INFO L226 Difference]: Without dead ends: 534 [2018-10-25 00:09:45,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:09:45,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-10-25 00:09:45,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-10-25 00:09:45,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-10-25 00:09:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-10-25 00:09:45,970 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 176 [2018-10-25 00:09:45,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:09:45,973 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-10-25 00:09:45,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:09:45,973 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-10-25 00:09:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-25 00:09:45,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:45,984 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] [2018-10-25 00:09:45,984 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:45,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:45,985 INFO L82 PathProgramCache]: Analyzing trace with hash -602299443, now seen corresponding path program 1 times [2018-10-25 00:09:45,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:45,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:45,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:45,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:45,987 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:46,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:09:46,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:09:46,535 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:46,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:09:46,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:09:46,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:09:46,538 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-10-25 00:09:48,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:09:48,463 INFO L93 Difference]: Finished difference Result 1493 states and 2512 transitions. [2018-10-25 00:09:48,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:09:48,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2018-10-25 00:09:48,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:09:48,477 INFO L225 Difference]: With dead ends: 1493 [2018-10-25 00:09:48,477 INFO L226 Difference]: Without dead ends: 967 [2018-10-25 00:09:48,486 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:09:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-10-25 00:09:48,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 951. [2018-10-25 00:09:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2018-10-25 00:09:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1540 transitions. [2018-10-25 00:09:48,540 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1540 transitions. Word has length 189 [2018-10-25 00:09:48,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:09:48,540 INFO L481 AbstractCegarLoop]: Abstraction has 951 states and 1540 transitions. [2018-10-25 00:09:48,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:09:48,541 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1540 transitions. [2018-10-25 00:09:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-25 00:09:48,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:48,548 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] [2018-10-25 00:09:48,548 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:48,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:48,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1117769588, now seen corresponding path program 1 times [2018-10-25 00:09:48,549 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:48,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:48,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:48,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:48,550 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:48,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:09:48,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:09:48,920 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:48,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:09:48,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:09:48,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:09:48,922 INFO L87 Difference]: Start difference. First operand 951 states and 1540 transitions. Second operand 6 states. [2018-10-25 00:09:52,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:09:52,974 INFO L93 Difference]: Finished difference Result 2784 states and 4694 transitions. [2018-10-25 00:09:52,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:09:52,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-10-25 00:09:52,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:09:52,990 INFO L225 Difference]: With dead ends: 2784 [2018-10-25 00:09:52,990 INFO L226 Difference]: Without dead ends: 1839 [2018-10-25 00:09:52,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:09:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2018-10-25 00:09:53,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1809. [2018-10-25 00:09:53,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2018-10-25 00:09:53,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2782 transitions. [2018-10-25 00:09:53,095 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2782 transitions. Word has length 204 [2018-10-25 00:09:53,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:09:53,096 INFO L481 AbstractCegarLoop]: Abstraction has 1809 states and 2782 transitions. [2018-10-25 00:09:53,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:09:53,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2782 transitions. [2018-10-25 00:09:53,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-25 00:09:53,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:53,107 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] [2018-10-25 00:09:53,108 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:53,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:53,108 INFO L82 PathProgramCache]: Analyzing trace with hash -356667913, now seen corresponding path program 1 times [2018-10-25 00:09:53,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:53,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:53,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:53,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:53,111 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:53,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:09:53,651 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:09:53,652 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-25 00:09:53,655 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] [2018-10-25 00:09:53,743 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:09:53,743 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:09:56,700 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:09:56,702 INFO L272 AbstractInterpreter]: Visited 180 different actions 354 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:09:56,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:56,751 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:09:59,104 INFO L232 lantSequenceWeakener]: Weakened 220 states. On average, predicates are now at 72.13% of their original sizes. [2018-10-25 00:09:59,105 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:09:59,967 INFO L413 sIntCurrentIteration]: We have 222 unified AI predicates [2018-10-25 00:09:59,968 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:09:59,969 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:09:59,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-25 00:09:59,970 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:59,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-25 00:09:59,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-25 00:09:59,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-10-25 00:09:59,971 INFO L87 Difference]: Start difference. First operand 1809 states and 2782 transitions. Second operand 20 states. [2018-10-25 00:11:14,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:11:14,803 INFO L93 Difference]: Finished difference Result 4034 states and 6121 transitions. [2018-10-25 00:11:14,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:11:14,804 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 223 [2018-10-25 00:11:14,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:11:14,816 INFO L225 Difference]: With dead ends: 4034 [2018-10-25 00:11:14,816 INFO L226 Difference]: Without dead ends: 2231 [2018-10-25 00:11:14,822 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 231 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2018-10-25 00:11:14,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2018-10-25 00:11:14,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2228. [2018-10-25 00:11:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2018-10-25 00:11:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3229 transitions. [2018-10-25 00:11:14,882 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3229 transitions. Word has length 223 [2018-10-25 00:11:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:11:14,883 INFO L481 AbstractCegarLoop]: Abstraction has 2228 states and 3229 transitions. [2018-10-25 00:11:14,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-25 00:11:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3229 transitions. [2018-10-25 00:11:14,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-25 00:11:14,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:11:14,892 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] [2018-10-25 00:11:14,892 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:11:14,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:14,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1245431112, now seen corresponding path program 1 times [2018-10-25 00:11:14,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:11:14,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:14,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:11:14,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:14,895 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:11:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:11:15,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:15,353 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:11:15,353 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-25 00:11:15,354 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] [2018-10-25 00:11:15,367 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:11:15,368 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:11:18,570 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:11:18,570 INFO L272 AbstractInterpreter]: Visited 180 different actions 353 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:11:18,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:18,575 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:11:21,909 INFO L232 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 78.74% of their original sizes. [2018-10-25 00:11:21,909 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:11:29,157 INFO L413 sIntCurrentIteration]: We have 222 unified AI predicates [2018-10-25 00:11:29,157 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:11:29,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:11:29,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-25 00:11:29,158 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:11:29,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:11:29,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:11:29,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:11:29,160 INFO L87 Difference]: Start difference. First operand 2228 states and 3229 transitions. Second operand 13 states. [2018-10-25 00:12:35,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:12:35,726 INFO L93 Difference]: Finished difference Result 5406 states and 7979 transitions. [2018-10-25 00:12:35,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-25 00:12:35,726 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 223 [2018-10-25 00:12:35,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:12:35,744 INFO L225 Difference]: With dead ends: 5406 [2018-10-25 00:12:35,745 INFO L226 Difference]: Without dead ends: 3603 [2018-10-25 00:12:35,751 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 227 GetRequests, 90 SyntacticMatches, 121 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-10-25 00:12:35,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2018-10-25 00:12:35,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 3596. [2018-10-25 00:12:35,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3596 states. [2018-10-25 00:12:35,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5061 transitions. [2018-10-25 00:12:35,847 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5061 transitions. Word has length 223 [2018-10-25 00:12:35,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:12:35,848 INFO L481 AbstractCegarLoop]: Abstraction has 3596 states and 5061 transitions. [2018-10-25 00:12:35,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:12:35,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5061 transitions. [2018-10-25 00:12:35,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-25 00:12:35,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:12:35,860 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] [2018-10-25 00:12:35,860 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:12:35,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:35,861 INFO L82 PathProgramCache]: Analyzing trace with hash -297463297, now seen corresponding path program 1 times [2018-10-25 00:12:35,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:12:35,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:35,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:35,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:35,862 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:12:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:36,140 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-25 00:12:36,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:12:36,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:12:36,141 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:12:36,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:12:36,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:12:36,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:12:36,143 INFO L87 Difference]: Start difference. First operand 3596 states and 5061 transitions. Second operand 3 states. [2018-10-25 00:12:37,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:12:37,361 INFO L93 Difference]: Finished difference Result 9086 states and 13724 transitions. [2018-10-25 00:12:37,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:12:37,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2018-10-25 00:12:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:12:37,394 INFO L225 Difference]: With dead ends: 9086 [2018-10-25 00:12:37,394 INFO L226 Difference]: Without dead ends: 6126 [2018-10-25 00:12:37,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:12:37,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2018-10-25 00:12:37,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 6119. [2018-10-25 00:12:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6119 states. [2018-10-25 00:12:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6119 states to 6119 states and 8691 transitions. [2018-10-25 00:12:37,581 INFO L78 Accepts]: Start accepts. Automaton has 6119 states and 8691 transitions. Word has length 224 [2018-10-25 00:12:37,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:12:37,582 INFO L481 AbstractCegarLoop]: Abstraction has 6119 states and 8691 transitions. [2018-10-25 00:12:37,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:12:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 6119 states and 8691 transitions. [2018-10-25 00:12:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-25 00:12:37,605 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:12:37,606 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] [2018-10-25 00:12:37,606 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:12:37,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:37,607 INFO L82 PathProgramCache]: Analyzing trace with hash -595480447, now seen corresponding path program 1 times [2018-10-25 00:12:37,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:12:37,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:37,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:37,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:37,608 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:12:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-25 00:12:38,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:12:38,076 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:12:38,077 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-10-25 00:12:38,077 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] [2018-10-25 00:12:38,085 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:12:38,085 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:12:43,725 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:12:43,726 INFO L272 AbstractInterpreter]: Visited 182 different actions 544 times. Merged at 7 different actions 22 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:12:43,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:43,730 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:12:43,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:12:43,730 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:12:43,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:43,741 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:12:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:43,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:12:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-25 00:12:44,246 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:12:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-25 00:12:44,754 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:12:44,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-10-25 00:12:44,754 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:12:44,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:12:44,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:12:44,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:12:44,756 INFO L87 Difference]: Start difference. First operand 6119 states and 8691 transitions. Second operand 3 states. [2018-10-25 00:12:46,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:12:46,982 INFO L93 Difference]: Finished difference Result 11312 states and 16432 transitions. [2018-10-25 00:12:46,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:12:46,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 249 [2018-10-25 00:12:46,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:12:47,015 INFO L225 Difference]: With dead ends: 11312 [2018-10-25 00:12:47,015 INFO L226 Difference]: Without dead ends: 6121 [2018-10-25 00:12:47,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:12:47,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states. [2018-10-25 00:12:47,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6121 to 6119. [2018-10-25 00:12:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6119 states. [2018-10-25 00:12:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6119 states to 6119 states and 8172 transitions. [2018-10-25 00:12:47,216 INFO L78 Accepts]: Start accepts. Automaton has 6119 states and 8172 transitions. Word has length 249 [2018-10-25 00:12:47,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:12:47,217 INFO L481 AbstractCegarLoop]: Abstraction has 6119 states and 8172 transitions. [2018-10-25 00:12:47,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:12:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 6119 states and 8172 transitions. [2018-10-25 00:12:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-25 00:12:47,238 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:12:47,239 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] [2018-10-25 00:12:47,239 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:12:47,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:47,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1821939352, now seen corresponding path program 1 times [2018-10-25 00:12:47,240 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:12:47,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:47,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:47,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:47,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:12:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:47,577 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:12:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 84 proven. 59 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-25 00:12:47,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:12:47,786 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:12:47,786 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-25 00:12:47,786 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] [2018-10-25 00:12:47,793 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:12:47,793 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:12:53,227 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:12:53,228 INFO L272 AbstractInterpreter]: Visited 183 different actions 552 times. Merged at 8 different actions 27 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-25 00:12:53,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:53,263 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:12:53,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:12:53,264 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 00:12:53,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:53,275 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:12:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:53,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:12:53,768 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-10-25 00:12:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 00:12:54,059 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:12:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 20 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-10-25 00:12:54,515 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:12:54,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-25 00:12:54,516 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:12:54,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-25 00:12:54,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-25 00:12:54,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:12:54,519 INFO L87 Difference]: Start difference. First operand 6119 states and 8172 transitions. Second operand 12 states. [2018-10-25 00:13:00,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:00,396 INFO L93 Difference]: Finished difference Result 19084 states and 27439 transitions. [2018-10-25 00:13:00,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-25 00:13:00,399 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 263 [2018-10-25 00:13:00,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:00,466 INFO L225 Difference]: With dead ends: 19084 [2018-10-25 00:13:00,467 INFO L226 Difference]: Without dead ends: 13761 [2018-10-25 00:13:00,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 548 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-10-25 00:13:00,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13761 states. [2018-10-25 00:13:00,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13761 to 13755. [2018-10-25 00:13:00,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13755 states. [2018-10-25 00:13:00,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13755 states to 13755 states and 18669 transitions. [2018-10-25 00:13:00,926 INFO L78 Accepts]: Start accepts. Automaton has 13755 states and 18669 transitions. Word has length 263 [2018-10-25 00:13:00,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:00,926 INFO L481 AbstractCegarLoop]: Abstraction has 13755 states and 18669 transitions. [2018-10-25 00:13:00,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-25 00:13:00,926 INFO L276 IsEmpty]: Start isEmpty. Operand 13755 states and 18669 transitions. [2018-10-25 00:13:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-25 00:13:01,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:01,003 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] [2018-10-25 00:13:01,004 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:01,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:01,004 INFO L82 PathProgramCache]: Analyzing trace with hash -759076715, now seen corresponding path program 1 times [2018-10-25 00:13:01,004 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:01,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:01,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:01,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:01,006 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 141 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-25 00:13:01,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:01,540 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:13:01,541 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 317 with the following transitions: [2018-10-25 00:13:01,541 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] [2018-10-25 00:13:01,546 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:13:01,546 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:13:07,767 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:13:07,767 INFO L272 AbstractInterpreter]: Visited 183 different actions 551 times. Merged at 8 different actions 28 times. Widened at 1 different actions 1 times. Found 4 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:13:07,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:07,776 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:13:18,750 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 90.7% of their original sizes. [2018-10-25 00:13:18,751 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:13:30,184 INFO L413 sIntCurrentIteration]: We have 315 unified AI predicates [2018-10-25 00:13:30,185 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:13:30,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:13:30,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [5] total 17 [2018-10-25 00:13:30,185 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:30,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-25 00:13:30,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-25 00:13:30,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:13:30,186 INFO L87 Difference]: Start difference. First operand 13755 states and 18669 transitions. Second operand 14 states. Received shutdown request... [2018-10-25 00:13:34,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-25 00:13:34,138 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:13:34,143 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:13:34,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:13:34 BoogieIcfgContainer [2018-10-25 00:13:34,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:13:34,144 INFO L168 Benchmark]: Toolchain (without parser) took 238506.19 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 1.4 GB in the end (delta: -23.7 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-25 00:13:34,145 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-25 00:13:34,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1221.11 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. [2018-10-25 00:13:34,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 317.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.9 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:34,147 INFO L168 Benchmark]: Boogie Preprocessor took 126.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:34,148 INFO L168 Benchmark]: RCFGBuilder took 5055.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 244.8 MB). Peak memory consumption was 244.8 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:34,149 INFO L168 Benchmark]: TraceAbstraction took 231775.12 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.4 GB in the end (delta: 499.6 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-25 00:13:34,154 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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. * CACSL2BoogieTranslator took 1221.11 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 317.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.9 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5055.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 244.8 MB). Peak memory consumption was 244.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231775.12 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.4 GB in the end (delta: 499.6 MB). Peak memory consumption was 2.3 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 (13755states) and FLOYD_HOARE automaton (currently 11 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (56 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 231.6s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 163.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2189 SDtfs, 9353 SDslu, 1845 SDs, 0 SdLazy, 16286 SolverSat, 2481 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 117.0s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1894 GetRequests, 1445 SyntacticMatches, 334 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2406 ImplicationChecksByTransitivity, 22.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13755occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 23.6s AbstIntTime, 5 AbstIntIterations, 3 AbstIntStrong, 0.9989400362449385 AbsIntWeakeningRatio, 0.26613965744400525 AbsIntAvgWeakeningVarsNumRemoved, 0.7984189723320159 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 73 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.3s 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