java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:54:20,924 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:54:20,927 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:54:20,939 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:54:20,939 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:54:20,940 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:54:20,942 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:54:20,944 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:54:20,945 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:54:20,946 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:54:20,947 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:54:20,947 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:54:20,948 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:54:20,949 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:54:20,950 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:54:20,951 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:54:20,952 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:54:20,954 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:54:20,956 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:54:20,958 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:54:20,959 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:54:20,960 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:54:20,963 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:54:20,963 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:54:20,963 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:54:20,964 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:54:20,965 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:54:20,966 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:54:20,967 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:54:20,968 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:54:20,968 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:54:20,969 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:54:20,969 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:54:20,970 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:54:20,971 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:54:20,971 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:54:20,972 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:54:20,994 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:54:20,995 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:54:20,995 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:54:20,996 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:54:20,996 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:54:20,996 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:54:20,996 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:54:20,996 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:54:20,997 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:54:20,997 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:54:20,997 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:54:20,997 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:54:20,997 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:54:20,998 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:54:20,998 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:54:20,998 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:54:20,999 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:54:20,999 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:54:20,999 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:54:20,999 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:54:20,999 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:54:21,000 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:54:21,000 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:54:21,000 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:54:21,000 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:54:21,000 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:54:21,001 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:54:21,001 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:54:21,001 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:54:21,001 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:54:21,001 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:54:21,002 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:54:21,002 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:54:21,002 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:54:21,002 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:54:21,002 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:54:21,047 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:54:21,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:54:21,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:54:21,065 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:54:21,066 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:54:21,066 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c [2018-11-07 08:54:21,130 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b5e1a31d/0ffc60a0042a4c80bedad6f4b758831e/FLAG11323a62d [2018-11-07 08:54:21,975 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:54:21,976 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c [2018-11-07 08:54:22,020 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b5e1a31d/0ffc60a0042a4c80bedad6f4b758831e/FLAG11323a62d [2018-11-07 08:54:22,042 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b5e1a31d/0ffc60a0042a4c80bedad6f4b758831e [2018-11-07 08:54:22,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:54:22,058 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:54:22,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:54:22,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:54:22,068 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:54:22,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:54:22" (1/1) ... [2018-11-07 08:54:22,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@febd950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:22, skipping insertion in model container [2018-11-07 08:54:22,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:54:22" (1/1) ... [2018-11-07 08:54:22,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:54:22,279 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:54:23,914 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:54:23,920 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:54:24,694 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:54:24,737 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:54:24,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:24 WrapperNode [2018-11-07 08:54:24,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:54:24,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:54:24,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:54:24,740 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:54:24,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:24" (1/1) ... [2018-11-07 08:54:25,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:24" (1/1) ... [2018-11-07 08:54:25,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:54:25,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:54:25,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:54:25,331 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:54:25,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:24" (1/1) ... [2018-11-07 08:54:25,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:24" (1/1) ... [2018-11-07 08:54:25,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:24" (1/1) ... [2018-11-07 08:54:25,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:24" (1/1) ... [2018-11-07 08:54:25,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:24" (1/1) ... [2018-11-07 08:54:25,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:24" (1/1) ... [2018-11-07 08:54:25,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:24" (1/1) ... [2018-11-07 08:54:25,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:54:25,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:54:25,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:54:25,723 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:54:25,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:54:25,794 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:54:25,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:54:25,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:54:25,795 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:54:25,796 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:54:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:54:25,796 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:54:25,796 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:54:25,797 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:54:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:54:25,797 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:54:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:54:25,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:54:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:54:25,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:54:37,245 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:54:37,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:54:37 BoogieIcfgContainer [2018-11-07 08:54:37,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:54:37,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:54:37,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:54:37,251 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:54:37,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:54:22" (1/3) ... [2018-11-07 08:54:37,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ef1bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:54:37, skipping insertion in model container [2018-11-07 08:54:37,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:24" (2/3) ... [2018-11-07 08:54:37,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ef1bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:54:37, skipping insertion in model container [2018-11-07 08:54:37,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:54:37" (3/3) ... [2018-11-07 08:54:37,254 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label49_true-unreach-call.c [2018-11-07 08:54:37,265 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:54:37,274 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:54:37,290 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:54:37,339 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:54:37,339 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:54:37,340 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:54:37,340 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:54:37,340 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:54:37,340 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:54:37,340 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:54:37,340 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:54:37,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 08:54:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-07 08:54:37,398 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:54:37,400 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] [2018-11-07 08:54:37,403 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:54:37,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:54:37,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1815238907, now seen corresponding path program 1 times [2018-11-07 08:54:37,414 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:54:37,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:37,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:54:37,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:37,470 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:54:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:54:38,002 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 08:54:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:54:38,076 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:54:38,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:54:38,076 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:54:38,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:54:38,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:54:38,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:54:38,136 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 08:54:52,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:54:52,061 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-11-07 08:54:52,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:54:52,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-11-07 08:54:52,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:54:52,123 INFO L225 Difference]: With dead ends: 4063 [2018-11-07 08:54:52,123 INFO L226 Difference]: Without dead ends: 2937 [2018-11-07 08:54:52,141 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:54:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-11-07 08:54:52,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-11-07 08:54:52,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-11-07 08:54:52,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-11-07 08:54:52,338 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 65 [2018-11-07 08:54:52,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:54:52,339 INFO L480 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-11-07 08:54:52,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:54:52,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-11-07 08:54:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 08:54:52,349 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:54:52,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:54:52,350 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:54:52,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:54:52,350 INFO L82 PathProgramCache]: Analyzing trace with hash -617731529, now seen corresponding path program 1 times [2018-11-07 08:54:52,350 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:54:52,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:52,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:54:52,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:52,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:54:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:54:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:54:52,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:54:52,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:54:52,819 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:54:52,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:54:52,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:54:52,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:54:52,822 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-11-07 08:55:08,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:08,220 INFO L93 Difference]: Finished difference Result 7277 states and 13063 transitions. [2018-11-07 08:55:08,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:55:08,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 08:55:08,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:08,266 INFO L225 Difference]: With dead ends: 7277 [2018-11-07 08:55:08,267 INFO L226 Difference]: Without dead ends: 5301 [2018-11-07 08:55:08,281 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:55:08,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2018-11-07 08:55:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5252. [2018-11-07 08:55:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2018-11-07 08:55:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8253 transitions. [2018-11-07 08:55:08,440 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8253 transitions. Word has length 136 [2018-11-07 08:55:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:08,440 INFO L480 AbstractCegarLoop]: Abstraction has 5252 states and 8253 transitions. [2018-11-07 08:55:08,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:55:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8253 transitions. [2018-11-07 08:55:08,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 08:55:08,445 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:08,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:55:08,446 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:08,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:08,446 INFO L82 PathProgramCache]: Analyzing trace with hash -824137274, now seen corresponding path program 1 times [2018-11-07 08:55:08,446 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:08,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:08,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:08,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:08,448 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:08,851 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:55:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:08,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:08,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:55:08,915 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:08,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:08,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:08,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:08,917 INFO L87 Difference]: Start difference. First operand 5252 states and 8253 transitions. Second operand 6 states. [2018-11-07 08:55:20,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:20,099 INFO L93 Difference]: Finished difference Result 13914 states and 22498 transitions. [2018-11-07 08:55:20,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:55:20,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-07 08:55:20,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:20,140 INFO L225 Difference]: With dead ends: 13914 [2018-11-07 08:55:20,141 INFO L226 Difference]: Without dead ends: 8668 [2018-11-07 08:55:20,161 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:55:20,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2018-11-07 08:55:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8605. [2018-11-07 08:55:20,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-11-07 08:55:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12803 transitions. [2018-11-07 08:55:20,358 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12803 transitions. Word has length 139 [2018-11-07 08:55:20,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:20,358 INFO L480 AbstractCegarLoop]: Abstraction has 8605 states and 12803 transitions. [2018-11-07 08:55:20,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:55:20,359 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12803 transitions. [2018-11-07 08:55:20,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-07 08:55:20,363 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:20,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:55:20,364 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:20,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:20,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2024947088, now seen corresponding path program 1 times [2018-11-07 08:55:20,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:20,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:20,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:20,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:20,366 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:20,660 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:55:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:20,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:20,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:55:20,854 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:20,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:20,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:20,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:20,856 INFO L87 Difference]: Start difference. First operand 8605 states and 12803 transitions. Second operand 6 states. [2018-11-07 08:55:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:31,586 INFO L93 Difference]: Finished difference Result 27252 states and 42305 transitions. [2018-11-07 08:55:31,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:55:31,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-11-07 08:55:31,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:31,686 INFO L225 Difference]: With dead ends: 27252 [2018-11-07 08:55:31,686 INFO L226 Difference]: Without dead ends: 18653 [2018-11-07 08:55:31,734 INFO L604 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 [2018-11-07 08:55:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18653 states. [2018-11-07 08:55:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18653 to 18564. [2018-11-07 08:55:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18564 states. [2018-11-07 08:55:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18564 states to 18564 states and 25945 transitions. [2018-11-07 08:55:32,183 INFO L78 Accepts]: Start accepts. Automaton has 18564 states and 25945 transitions. Word has length 170 [2018-11-07 08:55:32,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:32,183 INFO L480 AbstractCegarLoop]: Abstraction has 18564 states and 25945 transitions. [2018-11-07 08:55:32,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:55:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 18564 states and 25945 transitions. [2018-11-07 08:55:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-07 08:55:32,195 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:32,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:55:32,195 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:32,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:32,196 INFO L82 PathProgramCache]: Analyzing trace with hash -658364123, now seen corresponding path program 1 times [2018-11-07 08:55:32,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:32,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:32,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:32,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:32,197 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:32,572 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:55:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:32,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:32,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:55:32,866 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:32,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:32,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:32,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:32,867 INFO L87 Difference]: Start difference. First operand 18564 states and 25945 transitions. Second operand 6 states. [2018-11-07 08:55:41,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:41,640 INFO L93 Difference]: Finished difference Result 48015 states and 74441 transitions. [2018-11-07 08:55:41,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:55:41,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 233 [2018-11-07 08:55:41,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:41,795 INFO L225 Difference]: With dead ends: 48015 [2018-11-07 08:55:41,795 INFO L226 Difference]: Without dead ends: 29457 [2018-11-07 08:55:41,855 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:55:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29457 states. [2018-11-07 08:55:42,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29457 to 29303. [2018-11-07 08:55:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29303 states. [2018-11-07 08:55:42,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29303 states to 29303 states and 42010 transitions. [2018-11-07 08:55:42,597 INFO L78 Accepts]: Start accepts. Automaton has 29303 states and 42010 transitions. Word has length 233 [2018-11-07 08:55:42,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:42,599 INFO L480 AbstractCegarLoop]: Abstraction has 29303 states and 42010 transitions. [2018-11-07 08:55:42,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:55:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 29303 states and 42010 transitions. [2018-11-07 08:55:42,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-11-07 08:55:42,615 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:42,615 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, 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] [2018-11-07 08:55:42,615 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:42,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:42,616 INFO L82 PathProgramCache]: Analyzing trace with hash -16938847, now seen corresponding path program 1 times [2018-11-07 08:55:42,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:42,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:42,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:42,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:42,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 116 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:55:42,960 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:55:42,960 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:55:42,961 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-11-07 08:55:42,964 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3047], [3049], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3281], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 08:55:43,038 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:55:43,038 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:55:43,597 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:55:43,601 INFO L272 AbstractInterpreter]: Visited 110 different actions 110 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:55:43,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:43,641 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:55:44,235 INFO L227 lantSequenceWeakener]: Weakened 237 states. On average, predicates are now at 71.55% of their original sizes. [2018-11-07 08:55:44,236 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:55:44,494 INFO L415 sIntCurrentIteration]: We unified 245 AI predicates to 245 [2018-11-07 08:55:44,495 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:55:44,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:55:44,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 08:55:44,496 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:44,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:44,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:44,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:44,504 INFO L87 Difference]: Start difference. First operand 29303 states and 42010 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown