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/Problem19_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:08:33,557 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:08:33,559 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:08:33,575 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:08:33,576 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:08:33,577 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:08:33,578 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:08:33,580 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:08:33,582 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:08:33,582 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:08:33,583 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:08:33,584 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:08:33,585 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:08:33,587 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:08:33,591 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:08:33,592 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:08:33,593 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:08:33,600 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:08:33,602 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:08:33,604 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:08:33,605 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:08:33,606 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:08:33,608 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 02:08:33,609 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 02:08:33,609 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 02:08:33,610 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 02:08:33,611 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 02:08:33,611 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 02:08:33,612 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 02:08:33,613 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 02:08:33,613 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 02:08:33,614 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 02:08:33,616 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 02:08:33,648 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:08:33,648 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:08:33,649 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:08:33,649 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:08:33,649 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:08:33,649 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:08:33,649 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:08:33,653 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:08:33,653 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:08:33,653 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:08:33,653 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:08:33,653 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:08:33,654 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:08:33,654 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:08:33,655 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:08:33,655 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:08:33,656 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:08:33,656 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:08:33,656 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:08:33,656 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:08:33,656 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:08:33,657 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:08:33,657 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:08:33,657 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:08:33,657 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:08:33,657 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:08:33,658 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:08:33,659 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:08:33,659 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:08:33,660 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:08:33,660 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:08:33,660 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:08:33,660 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:08:33,660 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:08:33,660 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:08:33,661 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:08:33,716 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:08:33,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:08:33,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:08:33,737 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:08:33,737 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:08:33,738 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-10-25 02:08:33,803 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8f5347f5/db7b8dbaa6964798bc2d038d9b709b89/FLAGd07e7a6e9 [2018-10-25 02:08:34,677 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:08:34,678 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-10-25 02:08:34,720 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8f5347f5/db7b8dbaa6964798bc2d038d9b709b89/FLAGd07e7a6e9 [2018-10-25 02:08:34,735 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8f5347f5/db7b8dbaa6964798bc2d038d9b709b89 [2018-10-25 02:08:34,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:08:34,748 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:08:34,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:08:34,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:08:34,753 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:08:34,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:08:34" (1/1) ... [2018-10-25 02:08:34,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c21d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:08:34, skipping insertion in model container [2018-10-25 02:08:34,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:08:34" (1/1) ... [2018-10-25 02:08:34,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:08:35,032 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:08:36,987 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:08:36,992 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:08:38,114 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:08:38,162 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:08:38,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:08:38 WrapperNode [2018-10-25 02:08:38,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:08:38,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:08:38,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:08:38,164 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:08:38,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:08:38" (1/1) ... [2018-10-25 02:08:38,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:08:38" (1/1) ... [2018-10-25 02:08:38,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:08:38,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:08:38,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:08:38,912 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:08:38,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:08:38" (1/1) ... [2018-10-25 02:08:38,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:08:38" (1/1) ... [2018-10-25 02:08:38,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:08:38" (1/1) ... [2018-10-25 02:08:38,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:08:38" (1/1) ... [2018-10-25 02:08:39,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:08:38" (1/1) ... [2018-10-25 02:08:39,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:08:38" (1/1) ... [2018-10-25 02:08:39,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:08:38" (1/1) ... [2018-10-25 02:08:39,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:08:39,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:08:39,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:08:39,330 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:08:39,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:08:38" (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 02:08:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:08:39,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:08:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-25 02:08:39,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-25 02:08:39,395 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-25 02:08:39,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-25 02:08:39,395 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-25 02:08:39,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-25 02:08:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-25 02:08:39,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-25 02:08:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 02:08:39,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 02:08:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 02:08:39,397 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 02:08:39,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:08:39,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:08:39,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:08:39,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:08:57,047 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:08:57,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:08:57 BoogieIcfgContainer [2018-10-25 02:08:57,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:08:57,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:08:57,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:08:57,053 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:08:57,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:08:34" (1/3) ... [2018-10-25 02:08:57,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9b3d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:08:57, skipping insertion in model container [2018-10-25 02:08:57,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:08:38" (2/3) ... [2018-10-25 02:08:57,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9b3d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:08:57, skipping insertion in model container [2018-10-25 02:08:57,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:08:57" (3/3) ... [2018-10-25 02:08:57,057 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label02_true-unreach-call.c [2018-10-25 02:08:57,068 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:08:57,079 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:08:57,097 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:08:57,150 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:08:57,150 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:08:57,151 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:08:57,151 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:08:57,151 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:08:57,151 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:08:57,151 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:08:57,151 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:08:57,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-25 02:08:57,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-25 02:08:57,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:08:57,224 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] [2018-10-25 02:08:57,226 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:08:57,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:08:57,232 INFO L82 PathProgramCache]: Analyzing trace with hash -204669534, now seen corresponding path program 1 times [2018-10-25 02:08:57,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:08:57,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:08:57,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:08:57,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:08:57,288 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:08:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:08:57,834 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 02:08:57,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:08:57,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:08:57,837 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:08:57,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:08:57,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:08:57,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:08:57,866 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-25 02:09:14,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:09:14,752 INFO L93 Difference]: Finished difference Result 5034 states and 9499 transitions. [2018-10-25 02:09:14,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:09:14,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-10-25 02:09:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:09:14,809 INFO L225 Difference]: With dead ends: 5034 [2018-10-25 02:09:14,809 INFO L226 Difference]: Without dead ends: 3254 [2018-10-25 02:09:14,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:09:14,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2018-10-25 02:09:15,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3207. [2018-10-25 02:09:15,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3207 states. [2018-10-25 02:09:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 5994 transitions. [2018-10-25 02:09:15,042 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 5994 transitions. Word has length 73 [2018-10-25 02:09:15,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:09:15,043 INFO L481 AbstractCegarLoop]: Abstraction has 3207 states and 5994 transitions. [2018-10-25 02:09:15,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:09:15,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 5994 transitions. [2018-10-25 02:09:15,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-25 02:09:15,059 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:09:15,059 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 02:09:15,059 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:09:15,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:09:15,061 INFO L82 PathProgramCache]: Analyzing trace with hash -238257218, now seen corresponding path program 1 times [2018-10-25 02:09:15,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:09:15,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:09:15,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:09:15,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:09:15,063 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:09:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:09:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:09:15,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:09:15,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:09:15,677 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:09:15,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:09:15,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:09:15,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:09:15,681 INFO L87 Difference]: Start difference. First operand 3207 states and 5994 transitions. Second operand 6 states. [2018-10-25 02:09:42,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:09:42,513 INFO L93 Difference]: Finished difference Result 9590 states and 17980 transitions. [2018-10-25 02:09:42,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 02:09:42,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-25 02:09:42,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:09:42,556 INFO L225 Difference]: With dead ends: 9590 [2018-10-25 02:09:42,557 INFO L226 Difference]: Without dead ends: 6389 [2018-10-25 02:09:42,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:09:42,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2018-10-25 02:09:42,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6281. [2018-10-25 02:09:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2018-10-25 02:09:42,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11310 transitions. [2018-10-25 02:09:42,770 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11310 transitions. Word has length 146 [2018-10-25 02:09:42,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:09:42,770 INFO L481 AbstractCegarLoop]: Abstraction has 6281 states and 11310 transitions. [2018-10-25 02:09:42,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:09:42,771 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11310 transitions. [2018-10-25 02:09:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-25 02:09:42,774 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:09:42,774 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 02:09:42,774 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:09:42,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:09:42,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1315033247, now seen corresponding path program 1 times [2018-10-25 02:09:42,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:09:42,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:09:42,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:09:42,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:09:42,777 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:09:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:09:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:09:43,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:09:43,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 02:09:43,122 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:09:43,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 02:09:43,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 02:09:43,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 02:09:43,124 INFO L87 Difference]: Start difference. First operand 6281 states and 11310 transitions. Second operand 5 states. [2018-10-25 02:10:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:10:18,683 INFO L93 Difference]: Finished difference Result 18963 states and 34370 transitions. [2018-10-25 02:10:18,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 02:10:18,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2018-10-25 02:10:18,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:10:18,750 INFO L225 Difference]: With dead ends: 18963 [2018-10-25 02:10:18,751 INFO L226 Difference]: Without dead ends: 12688 [2018-10-25 02:10:18,775 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:10:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12688 states. [2018-10-25 02:10:19,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12688 to 12416. [2018-10-25 02:10:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12416 states. [2018-10-25 02:10:19,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12416 states to 12416 states and 18931 transitions. [2018-10-25 02:10:19,106 INFO L78 Accepts]: Start accepts. Automaton has 12416 states and 18931 transitions. Word has length 160 [2018-10-25 02:10:19,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:10:19,107 INFO L481 AbstractCegarLoop]: Abstraction has 12416 states and 18931 transitions. [2018-10-25 02:10:19,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 02:10:19,107 INFO L276 IsEmpty]: Start isEmpty. Operand 12416 states and 18931 transitions. [2018-10-25 02:10:19,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-25 02:10:19,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:10:19,116 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:10:19,116 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:10:19,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:10:19,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1267702423, now seen corresponding path program 1 times [2018-10-25 02:10:19,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:10:19,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:10:19,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:10:19,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:10:19,118 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:10:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:10:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 132 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 02:10:19,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:10:19,684 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:10:19,685 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-10-25 02:10:19,687 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5650], [5658], [5666], [5674], [5682], [5690], [5698], [5706], [5710], [5712], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5822], [5823], [5827], [5838], [5841], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-25 02:10:19,734 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:10:19,735 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:10:20,223 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 02:10:20,225 INFO L272 AbstractInterpreter]: Visited 95 different actions 95 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-25 02:10:20,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:10:20,263 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 02:10:20,825 INFO L232 lantSequenceWeakener]: Weakened 241 states. On average, predicates are now at 75.92% of their original sizes. [2018-10-25 02:10:20,825 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 02:10:20,976 INFO L413 sIntCurrentIteration]: We have 249 unified AI predicates [2018-10-25 02:10:20,976 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 02:10:20,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:10:20,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 02:10:20,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:10:20,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:10:20,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:10:20,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:10:20,979 INFO L87 Difference]: Start difference. First operand 12416 states and 18931 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown