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/Problem04_label58_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:49:40,990 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:49:40,992 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:49:41,006 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:49:41,006 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:49:41,009 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:49:41,010 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:49:41,014 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:49:41,016 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:49:41,017 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:49:41,017 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:49:41,018 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:49:41,019 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:49:41,020 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:49:41,021 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:49:41,022 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:49:41,023 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:49:41,025 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:49:41,030 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:49:41,032 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:49:41,034 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:49:41,037 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:49:41,041 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 22:49:41,041 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 22:49:41,041 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 22:49:41,042 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 22:49:41,046 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 22:49:41,047 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 22:49:41,050 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 22:49:41,051 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 22:49:41,052 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 22:49:41,052 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 22:49:41,053 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:49:41,053 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:49:41,056 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:49:41,057 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:49:41,058 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 [2018-10-24 22:49:41,092 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:49:41,092 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:49:41,093 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:49:41,093 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:49:41,094 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:49:41,094 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:49:41,094 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 22:49:41,094 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:49:41,095 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 22:49:41,095 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:49:41,095 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:49:41,095 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:49:41,095 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:49:41,096 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:49:41,096 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:49:41,097 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:49:41,097 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:49:41,097 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:49:41,097 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:49:41,097 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:49:41,098 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:49:41,098 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:49:41,098 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:49:41,098 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:49:41,098 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:49:41,099 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:49:41,099 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:49:41,099 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:49:41,099 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:49:41,100 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:49:41,100 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:49:41,100 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:49:41,100 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:49:41,100 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:49:41,101 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:49:41,101 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:49:41,145 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:49:41,162 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:49:41,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:49:41,168 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:49:41,169 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:49:41,170 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label58_false-unreach-call_false-termination.c [2018-10-24 22:49:41,241 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7522e5b4a/b30f6cf46752436594647f5a0423b984/FLAG3d9391717 [2018-10-24 22:49:42,092 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:49:42,093 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label58_false-unreach-call_false-termination.c [2018-10-24 22:49:42,140 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7522e5b4a/b30f6cf46752436594647f5a0423b984/FLAG3d9391717 [2018-10-24 22:49:42,161 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7522e5b4a/b30f6cf46752436594647f5a0423b984 [2018-10-24 22:49:42,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:49:42,176 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:49:42,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:49:42,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:49:42,184 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:49:42,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:49:42" (1/1) ... [2018-10-24 22:49:42,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa98528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:42, skipping insertion in model container [2018-10-24 22:49:42,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:49:42" (1/1) ... [2018-10-24 22:49:42,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:49:42,394 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:49:43,713 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:49:43,719 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:49:44,356 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:49:44,394 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:49:44,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:44 WrapperNode [2018-10-24 22:49:44,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:49:44,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:49:44,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:49:44,396 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:49:44,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:44" (1/1) ... [2018-10-24 22:49:44,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:44" (1/1) ... [2018-10-24 22:49:44,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:49:44,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:49:44,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:49:44,838 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:49:44,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:44" (1/1) ... [2018-10-24 22:49:44,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:44" (1/1) ... [2018-10-24 22:49:44,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:44" (1/1) ... [2018-10-24 22:49:44,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:44" (1/1) ... [2018-10-24 22:49:44,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:44" (1/1) ... [2018-10-24 22:49:45,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:44" (1/1) ... [2018-10-24 22:49:45,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:44" (1/1) ... [2018-10-24 22:49:45,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:49:45,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:49:45,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:49:45,060 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:49:45,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:44" (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 [2018-10-24 22:49:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:49:45,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:49:45,138 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 22:49:45,139 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 22:49:45,139 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:49:45,139 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:49:45,139 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:49:45,139 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:49:45,140 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:49:45,140 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:49:45,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:49:45,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:49:45,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:49:45,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:49:56,727 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:49:56,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:49:56 BoogieIcfgContainer [2018-10-24 22:49:56,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:49:56,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:49:56,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:49:56,736 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:49:56,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:49:42" (1/3) ... [2018-10-24 22:49:56,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f62bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:49:56, skipping insertion in model container [2018-10-24 22:49:56,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:49:44" (2/3) ... [2018-10-24 22:49:56,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f62bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:49:56, skipping insertion in model container [2018-10-24 22:49:56,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:49:56" (3/3) ... [2018-10-24 22:49:56,741 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label58_false-unreach-call_false-termination.c [2018-10-24 22:49:56,751 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:49:56,763 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:49:56,783 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:49:56,842 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:49:56,842 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:49:56,842 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:49:56,843 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:49:56,843 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:49:56,843 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:49:56,843 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:49:56,843 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:49:56,885 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-10-24 22:49:56,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2018-10-24 22:49:56,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:49:56,934 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:49:56,937 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:49:56,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:49:56,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1701736201, now seen corresponding path program 1 times [2018-10-24 22:49:56,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:49:57,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:49:57,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:49:57,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:49:57,006 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:49:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:49:58,373 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:49:59,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:49:59,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:49:59,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:49:59,279 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:49:59,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:49:59,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:49:59,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:49:59,303 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-10-24 22:50:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:50:05,458 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-10-24 22:50:05,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:50:05,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 775 [2018-10-24 22:50:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:50:05,512 INFO L225 Difference]: With dead ends: 2647 [2018-10-24 22:50:05,512 INFO L226 Difference]: Without dead ends: 1738 [2018-10-24 22:50:05,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:50:05,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-10-24 22:50:05,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-10-24 22:50:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-10-24 22:50:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3151 transitions. [2018-10-24 22:50:05,709 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3151 transitions. Word has length 775 [2018-10-24 22:50:05,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:50:05,712 INFO L481 AbstractCegarLoop]: Abstraction has 1738 states and 3151 transitions. [2018-10-24 22:50:05,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:50:05,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3151 transitions. [2018-10-24 22:50:05,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2018-10-24 22:50:05,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:50:05,824 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:50:05,824 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:50:05,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:50:05,825 INFO L82 PathProgramCache]: Analyzing trace with hash 963805624, now seen corresponding path program 1 times [2018-10-24 22:50:05,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:50:05,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:50:05,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:50:05,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:50:05,829 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:50:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:50:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:50:07,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:50:07,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:50:07,200 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:50:07,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:50:07,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:50:07,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:50:07,204 INFO L87 Difference]: Start difference. First operand 1738 states and 3151 transitions. Second operand 3 states. [2018-10-24 22:50:14,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:50:14,115 INFO L93 Difference]: Finished difference Result 5140 states and 9440 transitions. [2018-10-24 22:50:14,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:50:14,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 784 [2018-10-24 22:50:14,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:50:14,143 INFO L225 Difference]: With dead ends: 5140 [2018-10-24 22:50:14,144 INFO L226 Difference]: Without dead ends: 3408 [2018-10-24 22:50:14,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:50:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2018-10-24 22:50:14,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3408. [2018-10-24 22:50:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2018-10-24 22:50:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 5773 transitions. [2018-10-24 22:50:14,244 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 5773 transitions. Word has length 784 [2018-10-24 22:50:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:50:14,246 INFO L481 AbstractCegarLoop]: Abstraction has 3408 states and 5773 transitions. [2018-10-24 22:50:14,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:50:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 5773 transitions. [2018-10-24 22:50:14,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2018-10-24 22:50:14,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:50:14,265 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:50:14,265 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:50:14,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:50:14,267 INFO L82 PathProgramCache]: Analyzing trace with hash 542806816, now seen corresponding path program 1 times [2018-10-24 22:50:14,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:50:14,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:50:14,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:50:14,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:50:14,269 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:50:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:50:14,703 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:50:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:50:15,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:50:15,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:50:15,270 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:50:15,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:50:15,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:50:15,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:50:15,272 INFO L87 Difference]: Start difference. First operand 3408 states and 5773 transitions. Second operand 6 states. [2018-10-24 22:50:24,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:50:24,492 INFO L93 Difference]: Finished difference Result 8687 states and 14683 transitions. [2018-10-24 22:50:24,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:50:24,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 849 [2018-10-24 22:50:24,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:50:24,534 INFO L225 Difference]: With dead ends: 8687 [2018-10-24 22:50:24,534 INFO L226 Difference]: Without dead ends: 5285 [2018-10-24 22:50:24,543 INFO L605 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 [2018-10-24 22:50:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5285 states. [2018-10-24 22:50:24,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5285 to 5254. [2018-10-24 22:50:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5254 states. [2018-10-24 22:50:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 8099 transitions. [2018-10-24 22:50:24,719 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 8099 transitions. Word has length 849 [2018-10-24 22:50:24,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:50:24,719 INFO L481 AbstractCegarLoop]: Abstraction has 5254 states and 8099 transitions. [2018-10-24 22:50:24,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:50:24,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 8099 transitions. [2018-10-24 22:50:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2018-10-24 22:50:24,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:50:24,747 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:50:24,747 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:50:24,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:50:24,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1162486755, now seen corresponding path program 1 times [2018-10-24 22:50:24,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:50:24,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:50:24,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:50:24,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:50:24,749 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:50:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:50:25,110 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 22:50:25,452 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 22:50:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 89 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:50:25,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:50:25,928 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:50:25,930 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 870 with the following transitions: [2018-10-24 22:50:25,934 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [413], [415], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2885], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-10-24 22:50:26,042 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:50:26,043 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:50:31,846 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:50:31,848 INFO L272 AbstractInterpreter]: Visited 779 different actions 2329 times. Merged at 7 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 44 variables. [2018-10-24 22:50:31,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:50:31,883 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:50:35,710 INFO L232 lantSequenceWeakener]: Weakened 767 states. On average, predicates are now at 78.6% of their original sizes. [2018-10-24 22:50:35,711 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:50:36,419 INFO L413 sIntCurrentIteration]: We have 868 unified AI predicates [2018-10-24 22:50:36,419 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:50:36,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:50:36,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [11] total 30 [2018-10-24 22:50:36,421 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:50:36,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 22:50:36,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 22:50:36,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2018-10-24 22:50:36,423 INFO L87 Difference]: Start difference. First operand 5254 states and 8099 transitions. Second operand 21 states. [2018-10-24 22:52:15,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:52:15,500 INFO L93 Difference]: Finished difference Result 14483 states and 22954 transitions. [2018-10-24 22:52:15,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-24 22:52:15,500 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 869 [2018-10-24 22:52:15,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:52:15,541 INFO L225 Difference]: With dead ends: 14483 [2018-10-24 22:52:15,542 INFO L226 Difference]: Without dead ends: 9235 [2018-10-24 22:52:15,556 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 884 GetRequests, 842 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=189, Invalid=1143, Unknown=0, NotChecked=0, Total=1332 [2018-10-24 22:52:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9235 states. [2018-10-24 22:52:15,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9235 to 9216. [2018-10-24 22:52:15,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9216 states. [2018-10-24 22:52:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9216 states to 9216 states and 12539 transitions. [2018-10-24 22:52:15,786 INFO L78 Accepts]: Start accepts. Automaton has 9216 states and 12539 transitions. Word has length 869 [2018-10-24 22:52:15,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:52:15,788 INFO L481 AbstractCegarLoop]: Abstraction has 9216 states and 12539 transitions. [2018-10-24 22:52:15,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-24 22:52:15,788 INFO L276 IsEmpty]: Start isEmpty. Operand 9216 states and 12539 transitions. [2018-10-24 22:52:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2018-10-24 22:52:15,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:52:15,820 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:52:15,821 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:52:15,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:52:15,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1713151749, now seen corresponding path program 1 times [2018-10-24 22:52:15,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:52:15,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:52:15,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:52:15,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:52:15,823 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:52:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:52:16,914 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 22:52:17,142 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 22:52:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 124 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:52:18,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:52:18,305 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:52:18,306 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 922 with the following transitions: [2018-10-24 22:52:18,307 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [413], [415], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], 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[2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3093], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-10-24 22:52:18,326 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:52:18,326 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:52:21,741 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:52:21,742 INFO L272 AbstractInterpreter]: Visited 780 different actions 2331 times. Merged at 7 different actions 15 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 44 variables. [2018-10-24 22:52:21,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:52:21,750 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:52:21,750 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:52:21,750 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 [2018-10-24 22:52:21,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:52:21,759 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:52:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:52:22,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:52:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-24 22:52:22,922 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:52:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-24 22:52:24,296 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:52:24,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [9] total 10 [2018-10-24 22:52:24,296 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:52:24,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:52:24,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:52:24,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:52:24,298 INFO L87 Difference]: Start difference. First operand 9216 states and 12539 transitions. Second operand 3 states. [2018-10-24 22:52:29,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:52:29,779 INFO L93 Difference]: Finished difference Result 25249 states and 35692 transitions. [2018-10-24 22:52:29,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:52:29,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 921 [2018-10-24 22:52:29,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:52:29,853 INFO L225 Difference]: With dead ends: 25249 [2018-10-24 22:52:29,853 INFO L226 Difference]: Without dead ends: 16878 [2018-10-24 22:52:29,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1856 GetRequests, 1843 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:52:29,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16878 states. [2018-10-24 22:52:30,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16878 to 16643. [2018-10-24 22:52:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16643 states. [2018-10-24 22:52:30,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16643 states to 16643 states and 22457 transitions. [2018-10-24 22:52:30,279 INFO L78 Accepts]: Start accepts. Automaton has 16643 states and 22457 transitions. Word has length 921 [2018-10-24 22:52:30,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:52:30,280 INFO L481 AbstractCegarLoop]: Abstraction has 16643 states and 22457 transitions. [2018-10-24 22:52:30,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:52:30,280 INFO L276 IsEmpty]: Start isEmpty. Operand 16643 states and 22457 transitions. [2018-10-24 22:52:30,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2018-10-24 22:52:30,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:52:30,336 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:52:30,336 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:52:30,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:52:30,337 INFO L82 PathProgramCache]: Analyzing trace with hash 373321441, now seen corresponding path program 1 times [2018-10-24 22:52:30,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:52:30,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:52:30,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:52:30,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:52:30,338 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:52:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:52:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:52:31,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:52:31,603 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:52:31,604 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 923 with the following transitions: [2018-10-24 22:52:31,605 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [413], [415], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2697], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3069], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541] [2018-10-24 22:52:31,640 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:52:31,641 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:52:34,921 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:52:34,921 INFO L272 AbstractInterpreter]: Visited 779 different actions 1552 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 44 variables. [2018-10-24 22:52:34,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:52:34,958 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:52:38,563 INFO L232 lantSequenceWeakener]: Weakened 879 states. On average, predicates are now at 78.59% of their original sizes. [2018-10-24 22:52:38,564 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:52:47,061 INFO L413 sIntCurrentIteration]: We have 921 unified AI predicates [2018-10-24 22:52:47,061 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:52:47,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:52:47,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-10-24 22:52:47,062 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:52:47,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 22:52:47,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 22:52:47,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2018-10-24 22:52:47,064 INFO L87 Difference]: Start difference. First operand 16643 states and 22457 transitions. Second operand 21 states. Received shutdown request... [2018-10-24 22:53:24,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 22:53:24,392 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:53:24,397 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:53:24,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:53:24 BoogieIcfgContainer [2018-10-24 22:53:24,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:53:24,398 INFO L168 Benchmark]: Toolchain (without parser) took 222223.31 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 22:53:24,400 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:53:24,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2215.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:53:24,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 442.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:53:24,402 INFO L168 Benchmark]: Boogie Preprocessor took 221.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:53:24,403 INFO L168 Benchmark]: RCFGBuilder took 11668.12 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 169.3 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -127.7 MB). Peak memory consumption was 682.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:53:24,404 INFO L168 Benchmark]: TraceAbstraction took 207668.74 ms. Allocated memory was 2.5 GB in the beginning and 4.9 GB in the end (delta: 2.4 GB). Free memory was 2.4 GB in the beginning and 3.6 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 22:53:24,409 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2215.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 442.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 221.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11668.12 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 169.3 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -127.7 MB). Peak memory consumption was 682.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207668.74 ms. Allocated memory was 2.5 GB in the beginning and 4.9 GB in the end (delta: 2.4 GB). Free memory was 2.4 GB in the beginning and 3.6 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4643]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4643). Cancelled while BasicCegarLoop was constructing difference of abstraction (16643states) and FLOYD_HOARE automaton (currently 23 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (7165 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 207.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 164.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4753 SDtfs, 10706 SDslu, 655 SDs, 0 SdLazy, 36977 SolverSat, 4946 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 3696 GetRequests, 3248 SyntacticMatches, 368 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3298 ImplicationChecksByTransitivity, 12.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16643occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.7s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9994097130895335 AbsIntWeakeningRatio, 0.046953605366126326 AbsIntAvgWeakeningVarsNumRemoved, 0.10452766908887647 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 285 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 6041 NumberOfCodeBlocks, 6041 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 6954 ConstructedInterpolants, 0 QuantifiedInterpolants, 16459959 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1299 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 776/833 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown