java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:38:07,112 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:38:07,114 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:38:07,130 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:38:07,130 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:38:07,131 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:38:07,132 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:38:07,134 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:38:07,136 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:38:07,137 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:38:07,138 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:38:07,138 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:38:07,139 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:38:07,140 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:38:07,141 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:38:07,142 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:38:07,143 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:38:07,145 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:38:07,147 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:38:07,148 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:38:07,149 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:38:07,151 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:38:07,153 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:38:07,153 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:38:07,154 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:38:07,155 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:38:07,156 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:38:07,156 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:38:07,157 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:38:07,158 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:38:07,159 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:38:07,159 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:38:07,160 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:38:07,160 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:38:07,161 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:38:07,162 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:38:07,162 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:38:07,177 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:38:07,178 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:38:07,179 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:38:07,179 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:38:07,179 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:38:07,179 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:38:07,180 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:38:07,180 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:38:07,180 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:38:07,180 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:38:07,180 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:38:07,181 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:38:07,181 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:38:07,181 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:38:07,182 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:38:07,182 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:38:07,182 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:38:07,182 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:38:07,183 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:38:07,183 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:38:07,183 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:38:07,183 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:38:07,183 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:38:07,184 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:38:07,184 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:38:07,184 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:38:07,184 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:38:07,184 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:38:07,185 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:38:07,185 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:38:07,185 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:38:07,185 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:38:07,185 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:38:07,186 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:38:07,186 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:38:07,186 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:38:07,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:38:07,244 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:38:07,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:38:07,251 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:38:07,251 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:38:07,252 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label30_true-unreach-call.c [2018-11-07 09:38:07,316 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38beff227/29f62b3bcb4d4270a0ba3a6a31ff324f/FLAGc17f2c548 [2018-11-07 09:38:08,122 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:38:08,123 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label30_true-unreach-call.c [2018-11-07 09:38:08,163 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38beff227/29f62b3bcb4d4270a0ba3a6a31ff324f/FLAGc17f2c548 [2018-11-07 09:38:08,183 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38beff227/29f62b3bcb4d4270a0ba3a6a31ff324f [2018-11-07 09:38:08,195 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:38:08,200 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:38:08,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:38:08,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:38:08,206 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:38:08,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:38:08" (1/1) ... [2018-11-07 09:38:08,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d99460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:08, skipping insertion in model container [2018-11-07 09:38:08,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:38:08" (1/1) ... [2018-11-07 09:38:08,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:38:08,365 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:38:09,439 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:38:09,445 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:38:09,957 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:38:09,987 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:38:09,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:09 WrapperNode [2018-11-07 09:38:09,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:38:09,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:38:09,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:38:09,989 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:38:10,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:09" (1/1) ... [2018-11-07 09:38:10,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:09" (1/1) ... [2018-11-07 09:38:10,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:38:10,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:38:10,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:38:10,284 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:38:10,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:09" (1/1) ... [2018-11-07 09:38:10,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:09" (1/1) ... [2018-11-07 09:38:10,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:09" (1/1) ... [2018-11-07 09:38:10,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:09" (1/1) ... [2018-11-07 09:38:10,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:09" (1/1) ... [2018-11-07 09:38:10,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:09" (1/1) ... [2018-11-07 09:38:10,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:09" (1/1) ... [2018-11-07 09:38:10,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:38:10,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:38:10,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:38:10,489 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:38:10,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:38:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:38:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:38:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:38:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:38:10,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:38:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:38:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:38:10,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:38:10,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:38:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:38:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:38:10,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:38:10,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:38:18,468 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:38:18,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:38:18 BoogieIcfgContainer [2018-11-07 09:38:18,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:38:18,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:38:18,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:38:18,474 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:38:18,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:38:08" (1/3) ... [2018-11-07 09:38:18,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d102a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:38:18, skipping insertion in model container [2018-11-07 09:38:18,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:09" (2/3) ... [2018-11-07 09:38:18,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d102a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:38:18, skipping insertion in model container [2018-11-07 09:38:18,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:38:18" (3/3) ... [2018-11-07 09:38:18,478 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label30_true-unreach-call.c [2018-11-07 09:38:18,488 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:38:18,499 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:38:18,518 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:38:18,565 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:38:18,565 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:38:18,566 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:38:18,566 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:38:18,566 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:38:18,566 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:38:18,566 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:38:18,567 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:38:18,608 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 09:38:18,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-07 09:38:18,623 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:18,625 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] [2018-11-07 09:38:18,627 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:18,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:18,634 INFO L82 PathProgramCache]: Analyzing trace with hash 2116267860, now seen corresponding path program 1 times [2018-11-07 09:38:18,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:18,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:18,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:18,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:18,692 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:19,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:19,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:38:19,166 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:19,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:38:19,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:38:19,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:38:19,193 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-07 09:38:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:29,849 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-07 09:38:29,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:38:29,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-11-07 09:38:29,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:29,894 INFO L225 Difference]: With dead ends: 2974 [2018-11-07 09:38:29,894 INFO L226 Difference]: Without dead ends: 2193 [2018-11-07 09:38:29,906 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:38:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-07 09:38:30,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-11-07 09:38:30,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-11-07 09:38:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3506 transitions. [2018-11-07 09:38:30,109 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3506 transitions. Word has length 50 [2018-11-07 09:38:30,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:30,110 INFO L480 AbstractCegarLoop]: Abstraction has 2193 states and 3506 transitions. [2018-11-07 09:38:30,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:38:30,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3506 transitions. [2018-11-07 09:38:30,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 09:38:30,117 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:30,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:38:30,118 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:30,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:30,119 INFO L82 PathProgramCache]: Analyzing trace with hash -940653118, now seen corresponding path program 1 times [2018-11-07 09:38:30,119 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:30,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:30,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:30,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:30,121 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:30,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:30,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:38:30,421 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:30,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:38:30,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:38:30,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:38:30,426 INFO L87 Difference]: Start difference. First operand 2193 states and 3506 transitions. Second operand 5 states. [2018-11-07 09:38:39,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:39,268 INFO L93 Difference]: Finished difference Result 6600 states and 10738 transitions. [2018-11-07 09:38:39,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:38:39,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-11-07 09:38:39,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:39,308 INFO L225 Difference]: With dead ends: 6600 [2018-11-07 09:38:39,308 INFO L226 Difference]: Without dead ends: 4413 [2018-11-07 09:38:39,318 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:38:39,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-11-07 09:38:39,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-11-07 09:38:39,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-11-07 09:38:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6712 transitions. [2018-11-07 09:38:39,474 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6712 transitions. Word has length 120 [2018-11-07 09:38:39,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:39,475 INFO L480 AbstractCegarLoop]: Abstraction has 4378 states and 6712 transitions. [2018-11-07 09:38:39,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:38:39,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6712 transitions. [2018-11-07 09:38:39,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 09:38:39,488 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:39,489 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:38:39,489 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:39,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:39,490 INFO L82 PathProgramCache]: Analyzing trace with hash 599162315, now seen corresponding path program 1 times [2018-11-07 09:38:39,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:39,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:39,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:39,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:39,493 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:39,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:39,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:38:39,771 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:39,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:38:39,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:38:39,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:38:39,773 INFO L87 Difference]: Start difference. First operand 4378 states and 6712 transitions. Second operand 6 states. [2018-11-07 09:38:44,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:44,980 INFO L93 Difference]: Finished difference Result 11002 states and 16943 transitions. [2018-11-07 09:38:44,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:38:44,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-11-07 09:38:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:45,031 INFO L225 Difference]: With dead ends: 11002 [2018-11-07 09:38:45,031 INFO L226 Difference]: Without dead ends: 6630 [2018-11-07 09:38:45,047 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:38:45,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-11-07 09:38:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-11-07 09:38:45,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-07 09:38:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8773 transitions. [2018-11-07 09:38:45,227 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8773 transitions. Word has length 147 [2018-11-07 09:38:45,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:45,228 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 8773 transitions. [2018-11-07 09:38:45,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:38:45,228 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8773 transitions. [2018-11-07 09:38:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-07 09:38:45,232 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:45,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:38:45,233 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:45,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:45,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1887894889, now seen corresponding path program 1 times [2018-11-07 09:38:45,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:45,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:45,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:45,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:45,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:45,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:45,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:38:45,517 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:45,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:38:45,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:38:45,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:38:45,520 INFO L87 Difference]: Start difference. First operand 6590 states and 8773 transitions. Second operand 4 states. [2018-11-07 09:38:51,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:51,448 INFO L93 Difference]: Finished difference Result 13174 states and 17554 transitions. [2018-11-07 09:38:51,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:38:51,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-11-07 09:38:51,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:51,486 INFO L225 Difference]: With dead ends: 13174 [2018-11-07 09:38:51,486 INFO L226 Difference]: Without dead ends: 6590 [2018-11-07 09:38:51,508 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:38:51,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2018-11-07 09:38:51,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6590. [2018-11-07 09:38:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-07 09:38:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8069 transitions. [2018-11-07 09:38:51,659 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8069 transitions. Word has length 157 [2018-11-07 09:38:51,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:51,660 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 8069 transitions. [2018-11-07 09:38:51,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:38:51,660 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8069 transitions. [2018-11-07 09:38:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-07 09:38:51,667 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:51,667 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-11-07 09:38:51,667 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:51,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:51,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1024574149, now seen corresponding path program 1 times [2018-11-07 09:38:51,668 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:51,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:51,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:51,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:51,669 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:38:51,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:51,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:38:51,942 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:51,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:38:51,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:38:51,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:38:51,945 INFO L87 Difference]: Start difference. First operand 6590 states and 8069 transitions. Second operand 4 states. [2018-11-07 09:38:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:58,674 INFO L93 Difference]: Finished difference Result 26016 states and 32711 transitions. [2018-11-07 09:38:58,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:38:58,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 227 [2018-11-07 09:38:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:58,757 INFO L225 Difference]: With dead ends: 26016 [2018-11-07 09:38:58,757 INFO L226 Difference]: Without dead ends: 19432 [2018-11-07 09:38:58,780 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:38:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19432 states. [2018-11-07 09:38:59,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19432 to 19432. [2018-11-07 09:38:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19432 states. [2018-11-07 09:38:59,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19432 states to 19432 states and 23497 transitions. [2018-11-07 09:38:59,201 INFO L78 Accepts]: Start accepts. Automaton has 19432 states and 23497 transitions. Word has length 227 [2018-11-07 09:38:59,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:59,202 INFO L480 AbstractCegarLoop]: Abstraction has 19432 states and 23497 transitions. [2018-11-07 09:38:59,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:38:59,202 INFO L276 IsEmpty]: Start isEmpty. Operand 19432 states and 23497 transitions. [2018-11-07 09:38:59,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2018-11-07 09:38:59,251 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:59,252 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:38:59,252 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:59,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:59,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1794025893, now seen corresponding path program 1 times [2018-11-07 09:38:59,253 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:59,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:59,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:59,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:59,254 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:59,792 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:39:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 87 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:39:00,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:39:00,601 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:39:00,602 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 579 with the following transitions: [2018-11-07 09:39:00,606 INFO L202 CegarAbsIntRunner]: [0], [1], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1183], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1923], [1925], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:39:00,691 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:39:00,691 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:39:01,695 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:39:01,697 INFO L272 AbstractInterpreter]: Visited 407 different actions 407 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:39:01,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:01,742 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:39:02,736 INFO L227 lantSequenceWeakener]: Weakened 566 states. On average, predicates are now at 77.54% of their original sizes. [2018-11-07 09:39:02,737 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:39:03,220 INFO L415 sIntCurrentIteration]: We unified 577 AI predicates to 577 [2018-11-07 09:39:03,220 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:39:03,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:39:03,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2018-11-07 09:39:03,222 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:39:03,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 09:39:03,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 09:39:03,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:39:03,224 INFO L87 Difference]: Start difference. First operand 19432 states and 23497 transitions. Second operand 8 states. [2018-11-07 09:41:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:41:01,931 INFO L93 Difference]: Finished difference Result 39563 states and 47772 transitions. [2018-11-07 09:41:01,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 09:41:01,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 578 [2018-11-07 09:41:01,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:41:01,988 INFO L225 Difference]: With dead ends: 39563 [2018-11-07 09:41:01,989 INFO L226 Difference]: Without dead ends: 20137 [2018-11-07 09:41:02,028 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 579 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:41:02,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20137 states. [2018-11-07 09:41:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20137 to 20135. [2018-11-07 09:41:02,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20135 states. [2018-11-07 09:41:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20135 states to 20135 states and 24212 transitions. [2018-11-07 09:41:02,377 INFO L78 Accepts]: Start accepts. Automaton has 20135 states and 24212 transitions. Word has length 578 [2018-11-07 09:41:02,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:41:02,378 INFO L480 AbstractCegarLoop]: Abstraction has 20135 states and 24212 transitions. [2018-11-07 09:41:02,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 09:41:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 20135 states and 24212 transitions. [2018-11-07 09:41:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2018-11-07 09:41:02,424 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:41:02,425 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:41:02,426 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:41:02,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:41:02,426 INFO L82 PathProgramCache]: Analyzing trace with hash -324122114, now seen corresponding path program 1 times [2018-11-07 09:41:02,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:41:02,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:41:02,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:41:02,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:41:02,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:41:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:41:03,099 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:41:03,301 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:41:03,539 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:41:03,979 WARN L179 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 09:41:04,584 WARN L179 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-11-07 09:41:04,946 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-07 09:41:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 188 proven. 369 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:41:05,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:41:05,714 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:41:05,715 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 766 with the following transitions: [2018-11-07 09:41:05,716 INFO L202 CegarAbsIntRunner]: [0], [1], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1183], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1923], [1925], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:41:05,727 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:41:05,728 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:41:06,223 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:41:06,224 INFO L272 AbstractInterpreter]: Visited 411 different actions 815 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:41:06,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:41:06,249 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:41:06,955 INFO L227 lantSequenceWeakener]: Weakened 759 states. On average, predicates are now at 77.51% of their original sizes. [2018-11-07 09:41:06,956 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:41:07,105 INFO L415 sIntCurrentIteration]: We unified 764 AI predicates to 764 [2018-11-07 09:41:07,105 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:41:07,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:41:07,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2018-11-07 09:41:07,106 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:41:07,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 09:41:07,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 09:41:07,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-11-07 09:41:07,108 INFO L87 Difference]: Start difference. First operand 20135 states and 24212 transitions. Second operand 12 states. Received shutdown request... [2018-11-07 09:42:05,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 09:42:05,473 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:42:05,478 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:42:05,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:42:05 BoogieIcfgContainer [2018-11-07 09:42:05,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:42:05,479 INFO L168 Benchmark]: Toolchain (without parser) took 237283.01 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 366.8 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-07 09:42:05,480 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-07 09:42:05,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1787.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. [2018-11-07 09:42:05,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 294.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -946.2 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:42:05,482 INFO L168 Benchmark]: Boogie Preprocessor took 203.43 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 09:42:05,483 INFO L168 Benchmark]: RCFGBuilder took 7981.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 509.0 MB). Peak memory consumption was 509.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:42:05,484 INFO L168 Benchmark]: TraceAbstraction took 227008.04 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.0 GB in the end (delta: 639.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 09:42:05,489 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1787.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 294.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -946.2 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 203.43 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7981.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 509.0 MB). Peak memory consumption was 509.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227008.04 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.0 GB in the end (delta: 639.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 138). Cancelled while BasicCegarLoop was constructing difference of abstraction (20135states) and FLOYD_HOARE automaton (currently 22 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (25309 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 226.9s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 214.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3697 SDtfs, 14583 SDslu, 1788 SDs, 0 SdLazy, 28747 SolverSat, 5852 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 166.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1392 GetRequests, 1339 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20135occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9986946458204125 AbsIntWeakeningRatio, 0.049217002237136466 AbsIntAvgWeakeningVarsNumRemoved, 16.651006711409394 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 77 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 2044 NumberOfCodeBlocks, 2044 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2037 ConstructedInterpolants, 0 QuantifiedInterpolants, 4949414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 565/1056 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown