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/Problem18_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:56:02,073 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:56:02,078 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:56:02,092 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:56:02,093 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:56:02,094 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:56:02,095 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:56:02,097 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:56:02,098 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:56:02,099 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:56:02,100 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:56:02,100 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:56:02,101 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:56:02,103 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:56:02,104 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:56:02,105 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:56:02,106 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:56:02,110 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:56:02,115 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:56:02,118 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:56:02,119 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:56:02,120 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:56:02,125 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:56:02,126 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:56:02,126 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:56:02,128 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:56:02,129 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:56:02,129 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:56:02,132 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:56:02,133 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:56:02,133 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:56:02,135 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:56:02,135 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:56:02,136 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:56:02,137 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:56:02,137 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:56:02,137 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 16:56:02,162 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:56:02,162 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:56:02,163 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:56:02,163 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:56:02,164 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:56:02,164 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:56:02,164 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:56:02,164 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:56:02,165 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:56:02,165 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:56:02,165 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:56:02,165 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:56:02,165 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:56:02,166 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:56:02,166 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:56:02,166 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:56:02,167 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:56:02,167 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:56:02,167 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:56:02,167 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:56:02,167 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:56:02,168 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:56:02,168 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:56:02,168 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:56:02,168 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:56:02,168 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:56:02,169 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:56:02,169 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:56:02,169 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:56:02,169 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:56:02,169 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:56:02,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:56:02,170 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:56:02,170 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:56:02,170 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:56:02,247 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:56:02,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:56:02,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:56:02,268 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:56:02,268 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:56:02,269 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31_false-unreach-call.c [2018-11-12 16:56:02,342 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c35abea9/26a7f403b4c64f1e8d21a63e0e1d0550/FLAGdc5bca8a8 [2018-11-12 16:56:03,098 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:56:03,099 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label31_false-unreach-call.c [2018-11-12 16:56:03,128 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c35abea9/26a7f403b4c64f1e8d21a63e0e1d0550/FLAGdc5bca8a8 [2018-11-12 16:56:03,148 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c35abea9/26a7f403b4c64f1e8d21a63e0e1d0550 [2018-11-12 16:56:03,160 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:56:03,162 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:56:03,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:56:03,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:56:03,167 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:56:03,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:56:03" (1/1) ... [2018-11-12 16:56:03,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aefa37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:03, skipping insertion in model container [2018-11-12 16:56:03,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:56:03" (1/1) ... [2018-11-12 16:56:03,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:56:03,323 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:56:04,456 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:56:04,461 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:56:04,935 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:56:04,962 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:56:04,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:04 WrapperNode [2018-11-12 16:56:04,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:56:04,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:56:04,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:56:04,964 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:56:05,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:04" (1/1) ... [2018-11-12 16:56:05,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:04" (1/1) ... [2018-11-12 16:56:05,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:56:05,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:56:05,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:56:05,234 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:56:05,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:04" (1/1) ... [2018-11-12 16:56:05,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:04" (1/1) ... [2018-11-12 16:56:05,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:04" (1/1) ... [2018-11-12 16:56:05,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:04" (1/1) ... [2018-11-12 16:56:05,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:04" (1/1) ... [2018-11-12 16:56:05,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:04" (1/1) ... [2018-11-12 16:56:05,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:04" (1/1) ... [2018-11-12 16:56:05,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:56:05,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:56:05,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:56:05,429 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:56:05,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:04" (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 16:56:05,509 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:56:05,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:56:05,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:56:05,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:56:05,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:56:05,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:56:05,510 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:56:05,510 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:56:05,511 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:56:05,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:56:05,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:56:05,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:56:05,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:56:14,456 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:56:14,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:56:14 BoogieIcfgContainer [2018-11-12 16:56:14,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:56:14,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:56:14,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:56:14,461 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:56:14,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:56:03" (1/3) ... [2018-11-12 16:56:14,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e41738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:56:14, skipping insertion in model container [2018-11-12 16:56:14,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:04" (2/3) ... [2018-11-12 16:56:14,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e41738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:56:14, skipping insertion in model container [2018-11-12 16:56:14,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:56:14" (3/3) ... [2018-11-12 16:56:14,465 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label31_false-unreach-call.c [2018-11-12 16:56:14,476 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:56:14,486 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:56:14,504 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:56:14,550 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:56:14,550 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:56:14,550 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:56:14,550 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:56:14,551 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:56:14,551 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:56:14,551 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:56:14,551 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:56:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-12 16:56:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-12 16:56:14,616 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:14,618 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] [2018-11-12 16:56:14,622 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:14,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:14,629 INFO L82 PathProgramCache]: Analyzing trace with hash 609614244, now seen corresponding path program 1 times [2018-11-12 16:56:14,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:14,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:14,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:14,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:14,683 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:15,084 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 16:56:15,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:15,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:56:15,087 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:15,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:56:15,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:56:15,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:56:15,116 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-12 16:56:22,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:22,424 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-12 16:56:22,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:56:22,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-12 16:56:22,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:22,474 INFO L225 Difference]: With dead ends: 2251 [2018-11-12 16:56:22,474 INFO L226 Difference]: Without dead ends: 1474 [2018-11-12 16:56:22,492 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:56:22,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-12 16:56:22,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-12 16:56:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-12 16:56:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-12 16:56:22,670 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 22 [2018-11-12 16:56:22,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:22,671 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-12 16:56:22,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:56:22,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-12 16:56:22,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-12 16:56:22,677 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:22,677 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:56:22,678 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:22,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:22,678 INFO L82 PathProgramCache]: Analyzing trace with hash 2062892298, now seen corresponding path program 1 times [2018-11-12 16:56:22,678 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:22,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:22,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:22,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:22,680 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:23,007 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:56:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:56:23,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:23,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:56:23,407 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:23,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:56:23,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:56:23,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:56:23,410 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-12 16:56:34,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:34,225 INFO L93 Difference]: Finished difference Result 5777 states and 11168 transitions. [2018-11-12 16:56:34,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:56:34,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-11-12 16:56:34,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:34,259 INFO L225 Difference]: With dead ends: 5777 [2018-11-12 16:56:34,259 INFO L226 Difference]: Without dead ends: 4309 [2018-11-12 16:56:34,270 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:56:34,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2018-11-12 16:56:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 4283. [2018-11-12 16:56:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4283 states. [2018-11-12 16:56:34,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4283 states to 4283 states and 7016 transitions. [2018-11-12 16:56:34,427 INFO L78 Accepts]: Start accepts. Automaton has 4283 states and 7016 transitions. Word has length 96 [2018-11-12 16:56:34,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:34,429 INFO L480 AbstractCegarLoop]: Abstraction has 4283 states and 7016 transitions. [2018-11-12 16:56:34,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:56:34,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4283 states and 7016 transitions. [2018-11-12 16:56:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-12 16:56:34,444 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:34,445 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:56:34,445 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:34,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:34,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1199088567, now seen corresponding path program 1 times [2018-11-12 16:56:34,446 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:34,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:34,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:34,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:34,447 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:34,875 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:56:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:56:35,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:35,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:56:35,070 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:35,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:56:35,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:56:35,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:56:35,126 INFO L87 Difference]: Start difference. First operand 4283 states and 7016 transitions. Second operand 6 states. [2018-11-12 16:56:40,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:40,747 INFO L93 Difference]: Finished difference Result 10060 states and 16785 transitions. [2018-11-12 16:56:40,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:56:40,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2018-11-12 16:56:40,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:40,790 INFO L225 Difference]: With dead ends: 10060 [2018-11-12 16:56:40,790 INFO L226 Difference]: Without dead ends: 5783 [2018-11-12 16:56:40,804 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:56:40,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5783 states. [2018-11-12 16:56:40,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5783 to 5754. [2018-11-12 16:56:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5754 states. [2018-11-12 16:56:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5754 states to 5754 states and 9275 transitions. [2018-11-12 16:56:41,027 INFO L78 Accepts]: Start accepts. Automaton has 5754 states and 9275 transitions. Word has length 185 [2018-11-12 16:56:41,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:41,028 INFO L480 AbstractCegarLoop]: Abstraction has 5754 states and 9275 transitions. [2018-11-12 16:56:41,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:56:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5754 states and 9275 transitions. [2018-11-12 16:56:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-11-12 16:56:41,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:41,041 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:56:41,042 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:41,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:41,043 INFO L82 PathProgramCache]: Analyzing trace with hash 2119898916, now seen corresponding path program 1 times [2018-11-12 16:56:41,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:41,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:41,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:41,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:41,044 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:41,402 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:56:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:56:41,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:56:41,470 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:56:41,471 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-11-12 16:56:41,474 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1699], [1701], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [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], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:56:41,521 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:56:41,522 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:56:42,178 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:56:42,179 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Performed 1029 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1029 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:56:42,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:42,227 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:56:42,863 INFO L227 lantSequenceWeakener]: Weakened 219 states. On average, predicates are now at 77.34% of their original sizes. [2018-11-12 16:56:42,863 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:56:43,213 INFO L415 sIntCurrentIteration]: We unified 227 AI predicates to 227 [2018-11-12 16:56:43,213 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:56:43,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:56:43,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 16:56:43,218 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:43,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:56:43,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:56:43,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:56:43,219 INFO L87 Difference]: Start difference. First operand 5754 states and 9275 transitions. Second operand 7 states. [2018-11-12 16:56:51,433 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:57:18,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:57:18,983 INFO L93 Difference]: Finished difference Result 12207 states and 19704 transitions. [2018-11-12 16:57:18,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:57:18,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2018-11-12 16:57:18,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:57:19,014 INFO L225 Difference]: With dead ends: 12207 [2018-11-12 16:57:19,014 INFO L226 Difference]: Without dead ends: 6459 [2018-11-12 16:57:19,028 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 228 GetRequests, 222 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 16:57:19,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6459 states. [2018-11-12 16:57:19,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6459 to 6457. [2018-11-12 16:57:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6457 states. [2018-11-12 16:57:19,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6457 states to 6457 states and 9987 transitions. [2018-11-12 16:57:19,158 INFO L78 Accepts]: Start accepts. Automaton has 6457 states and 9987 transitions. Word has length 228 [2018-11-12 16:57:19,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:57:19,158 INFO L480 AbstractCegarLoop]: Abstraction has 6457 states and 9987 transitions. [2018-11-12 16:57:19,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 16:57:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 6457 states and 9987 transitions. [2018-11-12 16:57:19,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-11-12 16:57:19,168 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:57:19,169 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:57:19,169 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:57:19,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:57:19,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1330999225, now seen corresponding path program 1 times [2018-11-12 16:57:19,170 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:57:19,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:57:19,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:57:19,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:57:19,171 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:57:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:57:19,691 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 16:57:19,901 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 16:57:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 104 proven. 237 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:57:20,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:57:20,557 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:57:20,557 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-11-12 16:57:20,558 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1699], [1701], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [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], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [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], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:57:20,569 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:57:20,569 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:57:21,331 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:57:21,332 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Performed 5935 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5935 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:57:21,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:57:21,346 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:57:22,541 INFO L227 lantSequenceWeakener]: Weakened 112 states. On average, predicates are now at 77.78% of their original sizes. [2018-11-12 16:57:22,541 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:57:23,598 INFO L415 sIntCurrentIteration]: We unified 414 AI predicates to 414 [2018-11-12 16:57:23,598 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:57:23,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:57:23,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [11] total 31 [2018-11-12 16:57:23,599 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:57:23,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 16:57:23,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 16:57:23,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:57:23,601 INFO L87 Difference]: Start difference. First operand 6457 states and 9987 transitions. Second operand 22 states. [2018-11-12 16:57:51,486 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:58:31,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:58:31,163 INFO L93 Difference]: Finished difference Result 14153 states and 22477 transitions. [2018-11-12 16:58:31,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 16:58:31,163 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 415 [2018-11-12 16:58:31,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:58:31,208 INFO L225 Difference]: With dead ends: 14153 [2018-11-12 16:58:31,208 INFO L226 Difference]: Without dead ends: 8405 [2018-11-12 16:58:31,222 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 429 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=253, Invalid=1079, Unknown=0, NotChecked=0, Total=1332 [2018-11-12 16:58:31,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8405 states. [2018-11-12 16:58:31,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8405 to 8399. [2018-11-12 16:58:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8399 states. [2018-11-12 16:58:31,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 11969 transitions. [2018-11-12 16:58:31,433 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 11969 transitions. Word has length 415 [2018-11-12 16:58:31,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:58:31,439 INFO L480 AbstractCegarLoop]: Abstraction has 8399 states and 11969 transitions. [2018-11-12 16:58:31,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 16:58:31,439 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 11969 transitions. [2018-11-12 16:58:31,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2018-11-12 16:58:31,471 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:58:31,472 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:58:31,472 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:58:31,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:58:31,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1586745780, now seen corresponding path program 1 times [2018-11-12 16:58:31,473 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:58:31,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:31,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:58:31,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:31,479 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:58:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:58:32,139 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:58:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 51 proven. 282 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-12 16:58:32,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:58:32,625 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:58:32,626 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 757 with the following transitions: [2018-11-12 16:58:32,627 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [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], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1699], [1701], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [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], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [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], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:58:32,644 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:58:32,645 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:58:34,108 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:58:34,109 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Performed 15037 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15037 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:58:34,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:58:34,119 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:58:35,180 INFO L227 lantSequenceWeakener]: Weakened 447 states. On average, predicates are now at 77.46% of their original sizes. [2018-11-12 16:58:35,180 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:58:35,848 INFO L415 sIntCurrentIteration]: We unified 755 AI predicates to 755 [2018-11-12 16:58:35,849 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:58:35,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:58:35,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [6] total 35 [2018-11-12 16:58:35,850 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:58:35,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-12 16:58:35,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-12 16:58:35,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2018-11-12 16:58:35,852 INFO L87 Difference]: Start difference. First operand 8399 states and 11969 transitions. Second operand 31 states. [2018-11-12 16:59:24,174 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 16:59:40,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-12 16:59:40,478 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:59:40,484 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:59:40,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:59:40 BoogieIcfgContainer [2018-11-12 16:59:40,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:59:40,485 INFO L168 Benchmark]: Toolchain (without parser) took 217324.50 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 3.9 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -959.7 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-12 16:59:40,486 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-11-12 16:59:40,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1799.80 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. [2018-11-12 16:59:40,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 270.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -965.6 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:40,489 INFO L168 Benchmark]: Boogie Preprocessor took 194.49 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:40,490 INFO L168 Benchmark]: RCFGBuilder took 9027.92 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: 505.4 MB). Peak memory consumption was 505.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:40,490 INFO L168 Benchmark]: TraceAbstraction took 206026.52 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -663.8 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-12 16:59:40,495 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 1799.80 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 270.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -965.6 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 194.49 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9027.92 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: 505.4 MB). Peak memory consumption was 505.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206026.52 ms. Allocated memory was 2.3 GB in the beginning and 5.5 GB in the end (delta: 3.2 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -663.8 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: 54]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (8399states) and FLOYD_HOARE automaton (currently 38 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (9138 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 205.9s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 192.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2332 SDtfs, 20570 SDslu, 1908 SDs, 0 SdLazy, 39005 SolverSat, 6082 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.6s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1470 GetRequests, 1348 SyntacticMatches, 4 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8399occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.0s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9979041986002869 AbsIntWeakeningRatio, 0.07020057306590258 AbsIntAvgWeakeningVarsNumRemoved, 12.146848137535816 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 63 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 1702 NumberOfCodeBlocks, 1702 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1696 ConstructedInterpolants, 0 QuantifiedInterpolants, 3648577 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 238/847 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown