java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label26_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 17:02:00,104 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 17:02:00,106 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 17:02:00,119 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 17:02:00,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 17:02:00,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 17:02:00,123 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 17:02:00,125 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 17:02:00,126 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 17:02:00,127 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 17:02:00,128 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 17:02:00,129 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 17:02:00,130 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 17:02:00,131 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 17:02:00,132 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 17:02:00,133 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 17:02:00,134 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 17:02:00,136 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 17:02:00,138 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 17:02:00,140 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 17:02:00,141 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 17:02:00,143 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 17:02:00,145 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 17:02:00,146 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 17:02:00,146 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 17:02:00,147 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 17:02:00,149 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 17:02:00,149 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 17:02:00,150 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 17:02:00,152 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 17:02:00,152 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 17:02:00,153 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 17:02:00,153 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 17:02:00,153 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 17:02:00,155 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 17:02:00,155 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 17:02:00,156 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 17:02:00,188 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 17:02:00,189 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 17:02:00,190 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 17:02:00,190 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 17:02:00,191 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 17:02:00,191 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 17:02:00,191 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 17:02:00,192 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 17:02:00,192 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 17:02:00,192 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 17:02:00,192 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 17:02:00,192 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 17:02:00,193 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 17:02:00,194 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 17:02:00,195 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 17:02:00,195 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 17:02:00,195 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 17:02:00,195 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 17:02:00,196 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 17:02:00,196 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 17:02:00,196 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 17:02:00,196 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 17:02:00,196 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 17:02:00,198 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 17:02:00,198 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 17:02:00,198 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:02:00,199 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 17:02:00,199 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 17:02:00,199 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 17:02:00,199 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 17:02:00,200 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 17:02:00,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 17:02:00,200 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 17:02:00,200 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 17:02:00,200 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 17:02:00,276 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 17:02:00,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 17:02:00,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 17:02:00,297 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 17:02:00,297 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 17:02:00,298 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label26_false-unreach-call.c [2018-11-12 17:02:00,369 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa8cefb2/bbe9b843e2d947f2a6eecce63ee0cfa0/FLAG04e143fdd [2018-11-12 17:02:01,271 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 17:02:01,274 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label26_false-unreach-call.c [2018-11-12 17:02:01,326 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa8cefb2/bbe9b843e2d947f2a6eecce63ee0cfa0/FLAG04e143fdd [2018-11-12 17:02:01,343 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fa8cefb2/bbe9b843e2d947f2a6eecce63ee0cfa0 [2018-11-12 17:02:01,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 17:02:01,358 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 17:02:01,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 17:02:01,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 17:02:01,366 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 17:02:01,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:02:01" (1/1) ... [2018-11-12 17:02:01,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175e3307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:02:01, skipping insertion in model container [2018-11-12 17:02:01,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:02:01" (1/1) ... [2018-11-12 17:02:01,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 17:02:01,671 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 17:02:03,733 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:02:03,738 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 17:02:05,309 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:02:05,385 INFO L193 MainTranslator]: Completed translation [2018-11-12 17:02:05,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:02:05 WrapperNode [2018-11-12 17:02:05,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 17:02:05,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 17:02:05,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 17:02:05,388 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 17:02:05,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:02:05" (1/1) ... [2018-11-12 17:02:05,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:02:05" (1/1) ... [2018-11-12 17:02:05,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 17:02:05,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 17:02:05,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 17:02:05,942 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 17:02:05,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:02:05" (1/1) ... [2018-11-12 17:02:05,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:02:05" (1/1) ... [2018-11-12 17:02:06,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:02:05" (1/1) ... [2018-11-12 17:02:06,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:02:05" (1/1) ... [2018-11-12 17:02:06,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:02:05" (1/1) ... [2018-11-12 17:02:06,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:02:05" (1/1) ... [2018-11-12 17:02:06,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:02:05" (1/1) ... [2018-11-12 17:02:06,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 17:02:06,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 17:02:06,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 17:02:06,434 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 17:02:06,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:02:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:02:06,518 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 17:02:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 17:02:06,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 17:02:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-12 17:02:06,519 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-12 17:02:06,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-12 17:02:06,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-12 17:02:06,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 17:02:06,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 17:02:06,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 17:02:06,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 17:02:06,521 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 17:02:06,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 17:02:06,522 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 17:02:06,522 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 17:02:06,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 17:02:06,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 17:02:06,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 17:02:06,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 17:02:21,727 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 17:02:21,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:02:21 BoogieIcfgContainer [2018-11-12 17:02:21,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 17:02:21,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 17:02:21,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 17:02:21,733 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 17:02:21,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:02:01" (1/3) ... [2018-11-12 17:02:21,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fb826e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:02:21, skipping insertion in model container [2018-11-12 17:02:21,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:02:05" (2/3) ... [2018-11-12 17:02:21,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fb826e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:02:21, skipping insertion in model container [2018-11-12 17:02:21,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:02:21" (3/3) ... [2018-11-12 17:02:21,736 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label26_false-unreach-call.c [2018-11-12 17:02:21,747 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 17:02:21,758 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 17:02:21,778 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 17:02:21,834 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 17:02:21,834 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 17:02:21,834 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 17:02:21,834 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 17:02:21,834 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 17:02:21,834 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 17:02:21,835 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 17:02:21,835 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 17:02:21,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-12 17:02:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-12 17:02:21,894 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:02:21,895 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] [2018-11-12 17:02:21,898 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:02:21,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:02:21,905 INFO L82 PathProgramCache]: Analyzing trace with hash 709193730, now seen corresponding path program 1 times [2018-11-12 17:02:21,908 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:02:21,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:02:21,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:02:21,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:02:21,970 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:02:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:02:22,364 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:02:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:02:22,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:02:22,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:02:22,479 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:02:22,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:02:22,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:02:22,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:02:22,508 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-12 17:02:35,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:02:35,896 INFO L93 Difference]: Finished difference Result 5042 states and 9509 transitions. [2018-11-12 17:02:35,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:02:35,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-11-12 17:02:35,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:02:35,947 INFO L225 Difference]: With dead ends: 5042 [2018-11-12 17:02:35,947 INFO L226 Difference]: Without dead ends: 3262 [2018-11-12 17:02:35,962 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:02:35,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2018-11-12 17:02:36,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3214. [2018-11-12 17:02:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3214 states. [2018-11-12 17:02:36,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5986 transitions. [2018-11-12 17:02:36,188 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5986 transitions. Word has length 33 [2018-11-12 17:02:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:02:36,189 INFO L480 AbstractCegarLoop]: Abstraction has 3214 states and 5986 transitions. [2018-11-12 17:02:36,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:02:36,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5986 transitions. [2018-11-12 17:02:36,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-12 17:02:36,202 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:02:36,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:02:36,203 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:02:36,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:02:36,203 INFO L82 PathProgramCache]: Analyzing trace with hash 160362912, now seen corresponding path program 1 times [2018-11-12 17:02:36,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:02:36,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:02:36,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:02:36,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:02:36,208 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:02:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:02:36,719 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:02:36,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:02:36,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 17:02:36,720 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:02:36,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 17:02:36,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 17:02:36,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-12 17:02:36,723 INFO L87 Difference]: Start difference. First operand 3214 states and 5986 transitions. Second operand 5 states. [2018-11-12 17:02:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:02:58,353 INFO L93 Difference]: Finished difference Result 9608 states and 17975 transitions. [2018-11-12 17:02:58,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 17:02:58,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-11-12 17:02:58,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:02:58,391 INFO L225 Difference]: With dead ends: 9608 [2018-11-12 17:02:58,391 INFO L226 Difference]: Without dead ends: 6400 [2018-11-12 17:02:58,402 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:02:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2018-11-12 17:02:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 6337. [2018-11-12 17:02:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6337 states. [2018-11-12 17:02:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 10076 transitions. [2018-11-12 17:02:58,567 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 10076 transitions. Word has length 133 [2018-11-12 17:02:58,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:02:58,568 INFO L480 AbstractCegarLoop]: Abstraction has 6337 states and 10076 transitions. [2018-11-12 17:02:58,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 17:02:58,568 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 10076 transitions. [2018-11-12 17:02:58,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-12 17:02:58,573 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:02:58,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:02:58,574 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:02:58,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:02:58,574 INFO L82 PathProgramCache]: Analyzing trace with hash 738882868, now seen corresponding path program 1 times [2018-11-12 17:02:58,574 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:02:58,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:02:58,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:02:58,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:02:58,576 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:02:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:02:59,083 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:02:59,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:02:59,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:02:59,084 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:02:59,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:02:59,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:02:59,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:02:59,089 INFO L87 Difference]: Start difference. First operand 6337 states and 10076 transitions. Second operand 6 states. [2018-11-12 17:03:15,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:03:15,248 INFO L93 Difference]: Finished difference Result 19001 states and 30529 transitions. [2018-11-12 17:03:15,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 17:03:15,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-12 17:03:15,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:03:15,311 INFO L225 Difference]: With dead ends: 19001 [2018-11-12 17:03:15,311 INFO L226 Difference]: Without dead ends: 12670 [2018-11-12 17:03:15,330 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:03:15,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12670 states. [2018-11-12 17:03:15,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12670 to 12414. [2018-11-12 17:03:15,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12414 states. [2018-11-12 17:03:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 18890 transitions. [2018-11-12 17:03:15,647 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 18890 transitions. Word has length 143 [2018-11-12 17:03:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:03:15,648 INFO L480 AbstractCegarLoop]: Abstraction has 12414 states and 18890 transitions. [2018-11-12 17:03:15,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:03:15,648 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 18890 transitions. [2018-11-12 17:03:15,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-12 17:03:15,654 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:03:15,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:03:15,655 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:03:15,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:03:15,655 INFO L82 PathProgramCache]: Analyzing trace with hash -587070887, now seen corresponding path program 1 times [2018-11-12 17:03:15,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:03:15,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:03:15,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:03:15,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:03:15,657 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:03:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:03:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:03:15,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:03:15,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:03:15,978 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:03:15,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:03:15,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:03:15,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:03:15,980 INFO L87 Difference]: Start difference. First operand 12414 states and 18890 transitions. Second operand 6 states. [2018-11-12 17:03:30,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:03:30,497 INFO L93 Difference]: Finished difference Result 36974 states and 57795 transitions. [2018-11-12 17:03:30,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:03:30,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2018-11-12 17:03:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:03:30,596 INFO L225 Difference]: With dead ends: 36974 [2018-11-12 17:03:30,596 INFO L226 Difference]: Without dead ends: 24566 [2018-11-12 17:03:30,628 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:03:30,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24566 states. [2018-11-12 17:03:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24566 to 24168. [2018-11-12 17:03:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24168 states. [2018-11-12 17:03:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24168 states to 24168 states and 36341 transitions. [2018-11-12 17:03:31,139 INFO L78 Accepts]: Start accepts. Automaton has 24168 states and 36341 transitions. Word has length 198 [2018-11-12 17:03:31,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:03:31,140 INFO L480 AbstractCegarLoop]: Abstraction has 24168 states and 36341 transitions. [2018-11-12 17:03:31,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:03:31,140 INFO L276 IsEmpty]: Start isEmpty. Operand 24168 states and 36341 transitions. [2018-11-12 17:03:31,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-11-12 17:03:31,143 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:03:31,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:03:31,144 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:03:31,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:03:31,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1436298043, now seen corresponding path program 1 times [2018-11-12 17:03:31,145 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:03:31,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:03:31,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:03:31,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:03:31,146 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:03:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:03:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:03:32,019 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:03:32,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-12 17:03:32,019 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:03:32,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 17:03:32,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 17:03:32,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:03:32,021 INFO L87 Difference]: Start difference. First operand 24168 states and 36341 transitions. Second operand 7 states. [2018-11-12 17:04:02,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:04:02,337 INFO L93 Difference]: Finished difference Result 88826 states and 148889 transitions. [2018-11-12 17:04:02,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 17:04:02,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2018-11-12 17:04:02,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:04:02,594 INFO L225 Difference]: With dead ends: 88826 [2018-11-12 17:04:02,595 INFO L226 Difference]: Without dead ends: 64664 [2018-11-12 17:04:02,710 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:04:02,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64664 states. [2018-11-12 17:04:03,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64664 to 63946. [2018-11-12 17:04:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63946 states. [2018-11-12 17:04:04,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63946 states to 63946 states and 92988 transitions. [2018-11-12 17:04:04,147 INFO L78 Accepts]: Start accepts. Automaton has 63946 states and 92988 transitions. Word has length 250 [2018-11-12 17:04:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:04:04,148 INFO L480 AbstractCegarLoop]: Abstraction has 63946 states and 92988 transitions. [2018-11-12 17:04:04,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 17:04:04,148 INFO L276 IsEmpty]: Start isEmpty. Operand 63946 states and 92988 transitions. [2018-11-12 17:04:04,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-11-12 17:04:04,162 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:04:04,163 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 17:04:04,163 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:04:04,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:04:04,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1489751987, now seen corresponding path program 1 times [2018-11-12 17:04:04,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:04:04,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:04:04,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:04:04,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:04:04,166 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:04:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:04:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 262 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:04:05,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:04:05,195 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:04:05,196 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 463 with the following transitions: [2018-11-12 17:04:05,199 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5390], [5392], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6432], [6437], [6439], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-12 17:04:05,271 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:04:05,271 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:04:06,263 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 17:04:06,277 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:04:06,279 INFO L272 AbstractInterpreter]: Visited 220 different actions 220 times. Never merged. Never widened. Performed 2598 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2598 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 17:04:06,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:04:06,323 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:04:07,437 INFO L227 lantSequenceWeakener]: Weakened 451 states. On average, predicates are now at 75.1% of their original sizes. [2018-11-12 17:04:07,439 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:04:07,749 INFO L415 sIntCurrentIteration]: We unified 461 AI predicates to 461 [2018-11-12 17:04:07,749 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:04:07,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:04:07,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 17:04:07,751 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:04:07,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 17:04:07,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 17:04:07,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:04:07,753 INFO L87 Difference]: Start difference. First operand 63946 states and 92988 transitions. Second operand 7 states. [2018-11-12 17:05:08,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:05:08,406 INFO L93 Difference]: Finished difference Result 129278 states and 187453 transitions. [2018-11-12 17:05:08,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:05:08,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 462 [2018-11-12 17:05:08,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:05:08,610 INFO L225 Difference]: With dead ends: 129278 [2018-11-12 17:05:08,610 INFO L226 Difference]: Without dead ends: 65338 [2018-11-12 17:05:08,737 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 462 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:05:08,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65338 states. [2018-11-12 17:05:09,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65338 to 65336. [2018-11-12 17:05:09,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65336 states. [2018-11-12 17:05:10,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65336 states to 65336 states and 94392 transitions. [2018-11-12 17:05:10,043 INFO L78 Accepts]: Start accepts. Automaton has 65336 states and 94392 transitions. Word has length 462 [2018-11-12 17:05:10,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:05:10,044 INFO L480 AbstractCegarLoop]: Abstraction has 65336 states and 94392 transitions. [2018-11-12 17:05:10,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 17:05:10,044 INFO L276 IsEmpty]: Start isEmpty. Operand 65336 states and 94392 transitions. [2018-11-12 17:05:10,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2018-11-12 17:05:10,063 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:05:10,064 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:05:10,064 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:05:10,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:05:10,065 INFO L82 PathProgramCache]: Analyzing trace with hash 378291091, now seen corresponding path program 1 times [2018-11-12 17:05:10,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:05:10,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:10,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:05:10,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:10,066 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:05:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:05:11,612 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-12 17:05:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 90 proven. 622 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 17:05:15,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:05:15,770 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:05:15,771 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 703 with the following transitions: [2018-11-12 17:05:15,771 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5390], [5392], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6432], [6437], [6439], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6560], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-12 17:05:15,780 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:05:15,780 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:05:16,166 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 17:05:28,080 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 17:05:28,080 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 17:05:28,082 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 17:05:28,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:05:28,082 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:05:28,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:05:28,103 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:05:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:05:28,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:05:28,449 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 17:05:28,650 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 17:05:28,650 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:05:28,656 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:05:28,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:05:28 BoogieIcfgContainer [2018-11-12 17:05:28,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:05:28,657 INFO L168 Benchmark]: Toolchain (without parser) took 207300.93 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.7 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-12 17:05:28,659 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:05:28,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4028.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 962.9 MB in the end (delta: 413.1 MB). Peak memory consumption was 413.1 MB. Max. memory is 7.1 GB. [2018-11-12 17:05:28,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 554.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 813.2 MB). Free memory was 962.9 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.8 MB. Max. memory is 7.1 GB. [2018-11-12 17:05:28,662 INFO L168 Benchmark]: Boogie Preprocessor took 491.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. [2018-11-12 17:05:28,663 INFO L168 Benchmark]: RCFGBuilder took 15294.28 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 180.9 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 451.9 MB). Peak memory consumption was 680.3 MB. Max. memory is 7.1 GB. [2018-11-12 17:05:28,665 INFO L168 Benchmark]: TraceAbstraction took 186927.75 ms. Allocated memory was 2.5 GB in the beginning and 5.2 GB in the end (delta: 2.7 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 939.5 MB. Max. memory is 7.1 GB. [2018-11-12 17:05:28,677 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 4028.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 962.9 MB in the end (delta: 413.1 MB). Peak memory consumption was 413.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 554.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 813.2 MB). Free memory was 962.9 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 491.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15294.28 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 180.9 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 451.9 MB). Peak memory consumption was 680.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 186927.75 ms. Allocated memory was 2.5 GB in the beginning and 5.2 GB in the end (delta: 2.7 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 939.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 94). Cancelled while BasicCegarLoop was analyzing trace of length 703 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 186.8s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 157.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4464 SDtfs, 31977 SDslu, 4143 SDs, 0 SdLazy, 49320 SolverSat, 10855 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 103.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 507 GetRequests, 470 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65336occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.4s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9989739896370095 AbsIntWeakeningRatio, 0.06290672451193059 AbsIntAvgWeakeningVarsNumRemoved, 19.53362255965293 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 1485 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1219 NumberOfCodeBlocks, 1219 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1213 ConstructedInterpolants, 0 QuantifiedInterpolants, 1716898 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 366/368 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown