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/Problem15_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:10:09,193 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:10:09,196 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:10:09,210 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:10:09,211 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:10:09,212 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:10:09,213 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:10:09,215 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:10:09,216 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:10:09,217 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:10:09,218 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:10:09,219 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:10:09,220 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:10:09,221 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:10:09,222 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:10:09,223 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:10:09,223 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:10:09,225 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:10:09,227 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:10:09,229 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:10:09,230 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:10:09,231 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:10:09,237 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:10:09,237 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:10:09,237 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:10:09,242 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:10:09,245 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:10:09,247 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:10:09,248 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:10:09,249 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:10:09,249 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:10:09,250 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:10:09,250 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:10:09,250 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:10:09,251 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:10:09,254 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:10:09,254 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 19:10:09,278 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:10:09,278 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:10:09,279 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:10:09,279 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:10:09,279 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:10:09,280 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:10:09,280 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:10:09,280 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:10:09,280 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:10:09,280 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:10:09,281 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:10:09,281 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:10:09,281 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:10:09,282 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:10:09,282 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:10:09,283 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:10:09,283 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:10:09,283 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:10:09,283 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:10:09,283 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:10:09,284 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:10:09,284 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:10:09,284 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:10:09,284 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:10:09,284 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:10:09,285 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:10:09,285 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:10:09,285 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:10:09,285 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:10:09,285 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:10:09,287 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:10:09,287 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:10:09,287 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:10:09,288 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:10:09,288 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:10:09,338 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:10:09,350 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:10:09,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:10:09,356 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:10:09,356 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:10:09,357 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label08_true-unreach-call.c [2018-11-12 19:10:09,421 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a506d8c3/06c0d9383f934ff791f5ad7c9f631c0c/FLAG18b896932 [2018-11-12 19:10:10,090 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:10:10,091 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label08_true-unreach-call.c [2018-11-12 19:10:10,115 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a506d8c3/06c0d9383f934ff791f5ad7c9f631c0c/FLAG18b896932 [2018-11-12 19:10:10,136 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a506d8c3/06c0d9383f934ff791f5ad7c9f631c0c [2018-11-12 19:10:10,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:10:10,149 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:10:10,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:10:10,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:10:10,154 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:10:10,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:10:10" (1/1) ... [2018-11-12 19:10:10,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445fe728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:10:10, skipping insertion in model container [2018-11-12 19:10:10,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:10:10" (1/1) ... [2018-11-12 19:10:10,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:10:10,292 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:10:11,137 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:10:11,142 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:10:11,469 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:10:11,489 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:10:11,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:10:11 WrapperNode [2018-11-12 19:10:11,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:10:11,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:10:11,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:10:11,491 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:10:11,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:10:11" (1/1) ... [2018-11-12 19:10:11,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:10:11" (1/1) ... [2018-11-12 19:10:11,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:10:11,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:10:11,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:10:11,701 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:10:11,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:10:11" (1/1) ... [2018-11-12 19:10:11,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:10:11" (1/1) ... [2018-11-12 19:10:11,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:10:11" (1/1) ... [2018-11-12 19:10:11,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:10:11" (1/1) ... [2018-11-12 19:10:11,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:10:11" (1/1) ... [2018-11-12 19:10:11,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:10:11" (1/1) ... [2018-11-12 19:10:11,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:10:11" (1/1) ... [2018-11-12 19:10:11,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:10:11,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:10:11,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:10:11,879 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:10:11,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:10:11" (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 19:10:11,956 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:10:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:10:11,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:10:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:10:11,957 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:10:11,957 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:10:11,958 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:10:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:10:11,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:10:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:10:11,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:10:19,020 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:10:19,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:10:19 BoogieIcfgContainer [2018-11-12 19:10:19,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:10:19,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:10:19,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:10:19,026 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:10:19,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:10:10" (1/3) ... [2018-11-12 19:10:19,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f00ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:10:19, skipping insertion in model container [2018-11-12 19:10:19,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:10:11" (2/3) ... [2018-11-12 19:10:19,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f00ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:10:19, skipping insertion in model container [2018-11-12 19:10:19,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:10:19" (3/3) ... [2018-11-12 19:10:19,030 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label08_true-unreach-call.c [2018-11-12 19:10:19,038 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:10:19,048 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:10:19,066 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:10:19,109 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:10:19,109 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:10:19,109 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:10:19,109 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:10:19,109 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:10:19,110 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:10:19,110 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:10:19,110 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:10:19,144 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 19:10:19,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-12 19:10:19,154 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:10:19,155 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:10:19,158 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:10:19,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:19,164 INFO L82 PathProgramCache]: Analyzing trace with hash -561435596, now seen corresponding path program 1 times [2018-11-12 19:10:19,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:10:19,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:19,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:19,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:19,222 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:10:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:10:19,654 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:10:19,758 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 19:10:19,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:10:19,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:10:19,761 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:10:19,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:10:19,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:10:19,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:10:19,791 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-12 19:10:23,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:10:23,301 INFO L93 Difference]: Finished difference Result 1194 states and 2152 transitions. [2018-11-12 19:10:23,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:10:23,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2018-11-12 19:10:23,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:10:23,330 INFO L225 Difference]: With dead ends: 1194 [2018-11-12 19:10:23,330 INFO L226 Difference]: Without dead ends: 754 [2018-11-12 19:10:23,350 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:10:23,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-11-12 19:10:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 752. [2018-11-12 19:10:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-11-12 19:10:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1325 transitions. [2018-11-12 19:10:23,477 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1325 transitions. Word has length 58 [2018-11-12 19:10:23,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:10:23,479 INFO L480 AbstractCegarLoop]: Abstraction has 752 states and 1325 transitions. [2018-11-12 19:10:23,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:10:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1325 transitions. [2018-11-12 19:10:23,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-12 19:10:23,488 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:10:23,488 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:23,489 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:10:23,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:23,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1198310345, now seen corresponding path program 1 times [2018-11-12 19:10:23,489 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:10:23,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:23,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:23,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:23,492 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:10:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:10:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:10:23,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:10:23,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:10:23,884 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:10:23,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:10:23,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:10:23,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:10:23,887 INFO L87 Difference]: Start difference. First operand 752 states and 1325 transitions. Second operand 6 states. [2018-11-12 19:10:32,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:10:32,571 INFO L93 Difference]: Finished difference Result 2839 states and 5159 transitions. [2018-11-12 19:10:32,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:10:32,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-11-12 19:10:32,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:10:32,601 INFO L225 Difference]: With dead ends: 2839 [2018-11-12 19:10:32,601 INFO L226 Difference]: Without dead ends: 2093 [2018-11-12 19:10:32,609 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:10:32,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2018-11-12 19:10:32,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2052. [2018-11-12 19:10:32,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2052 states. [2018-11-12 19:10:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3398 transitions. [2018-11-12 19:10:32,725 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3398 transitions. Word has length 132 [2018-11-12 19:10:32,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:10:32,725 INFO L480 AbstractCegarLoop]: Abstraction has 2052 states and 3398 transitions. [2018-11-12 19:10:32,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:10:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3398 transitions. [2018-11-12 19:10:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-12 19:10:32,746 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:10:32,747 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:32,747 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:10:32,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:32,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1211406466, now seen corresponding path program 1 times [2018-11-12 19:10:32,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:10:32,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:32,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:32,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:32,749 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:10:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:10:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:10:32,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:10:32,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:10:32,999 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:10:32,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:10:32,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:10:33,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:10:33,000 INFO L87 Difference]: Start difference. First operand 2052 states and 3398 transitions. Second operand 5 states. [2018-11-12 19:10:37,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:10:37,511 INFO L93 Difference]: Finished difference Result 6119 states and 10293 transitions. [2018-11-12 19:10:37,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:10:37,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-11-12 19:10:37,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:10:37,540 INFO L225 Difference]: With dead ends: 6119 [2018-11-12 19:10:37,541 INFO L226 Difference]: Without dead ends: 4073 [2018-11-12 19:10:37,552 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:10:37,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4073 states. [2018-11-12 19:10:37,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4073 to 3987. [2018-11-12 19:10:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3987 states. [2018-11-12 19:10:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3987 states to 3987 states and 5861 transitions. [2018-11-12 19:10:37,691 INFO L78 Accepts]: Start accepts. Automaton has 3987 states and 5861 transitions. Word has length 135 [2018-11-12 19:10:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:10:37,692 INFO L480 AbstractCegarLoop]: Abstraction has 3987 states and 5861 transitions. [2018-11-12 19:10:37,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:10:37,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3987 states and 5861 transitions. [2018-11-12 19:10:37,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-12 19:10:37,699 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:10:37,700 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:37,700 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:10:37,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:37,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1183440816, now seen corresponding path program 1 times [2018-11-12 19:10:37,701 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:10:37,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:37,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:37,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:37,702 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:10:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:10:38,016 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:10:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:10:38,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:10:38,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:10:38,403 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:10:38,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:10:38,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:10:38,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:10:38,406 INFO L87 Difference]: Start difference. First operand 3987 states and 5861 transitions. Second operand 6 states. [2018-11-12 19:10:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:10:43,739 INFO L93 Difference]: Finished difference Result 11053 states and 16900 transitions. [2018-11-12 19:10:43,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:10:43,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-12 19:10:43,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:10:43,791 INFO L225 Difference]: With dead ends: 11053 [2018-11-12 19:10:43,792 INFO L226 Difference]: Without dead ends: 7072 [2018-11-12 19:10:43,832 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 19:10:43,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2018-11-12 19:10:44,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 6971. [2018-11-12 19:10:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6971 states. [2018-11-12 19:10:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6971 states to 6971 states and 9516 transitions. [2018-11-12 19:10:44,060 INFO L78 Accepts]: Start accepts. Automaton has 6971 states and 9516 transitions. Word has length 145 [2018-11-12 19:10:44,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:10:44,061 INFO L480 AbstractCegarLoop]: Abstraction has 6971 states and 9516 transitions. [2018-11-12 19:10:44,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:10:44,061 INFO L276 IsEmpty]: Start isEmpty. Operand 6971 states and 9516 transitions. [2018-11-12 19:10:44,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-12 19:10:44,067 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:10:44,067 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:44,068 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:10:44,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:44,068 INFO L82 PathProgramCache]: Analyzing trace with hash 984930483, now seen corresponding path program 1 times [2018-11-12 19:10:44,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:10:44,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:44,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:44,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:44,070 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:10:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:10:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:10:44,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:10:44,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:10:44,431 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:10:44,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:10:44,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:10:44,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:10:44,432 INFO L87 Difference]: Start difference. First operand 6971 states and 9516 transitions. Second operand 5 states. [2018-11-12 19:10:51,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:10:51,389 INFO L93 Difference]: Finished difference Result 18638 states and 26308 transitions. [2018-11-12 19:10:51,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:10:51,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2018-11-12 19:10:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:10:51,463 INFO L225 Difference]: With dead ends: 18638 [2018-11-12 19:10:51,464 INFO L226 Difference]: Without dead ends: 11673 [2018-11-12 19:10:51,503 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:10:51,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11673 states. [2018-11-12 19:10:51,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11673 to 11525. [2018-11-12 19:10:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11525 states. [2018-11-12 19:10:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11525 states to 11525 states and 15517 transitions. [2018-11-12 19:10:51,771 INFO L78 Accepts]: Start accepts. Automaton has 11525 states and 15517 transitions. Word has length 155 [2018-11-12 19:10:51,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:10:51,772 INFO L480 AbstractCegarLoop]: Abstraction has 11525 states and 15517 transitions. [2018-11-12 19:10:51,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:10:51,772 INFO L276 IsEmpty]: Start isEmpty. Operand 11525 states and 15517 transitions. [2018-11-12 19:10:51,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-12 19:10:51,777 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:10:51,778 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:51,778 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:10:51,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:51,778 INFO L82 PathProgramCache]: Analyzing trace with hash 528602966, now seen corresponding path program 1 times [2018-11-12 19:10:51,778 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:10:51,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:51,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:51,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:51,780 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:10:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:10:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:10:52,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:10:52,156 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:10:52,157 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 171 with the following transitions: [2018-11-12 19:10:52,160 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [437], [439], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:10:52,215 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:10:52,215 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:10:52,963 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:10:52,968 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Performed 1144 root evaluator evaluations with a maximum evaluation depth of 4. Performed 1144 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:10:53,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:53,013 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:10:53,525 INFO L227 lantSequenceWeakener]: Weakened 164 states. On average, predicates are now at 78.32% of their original sizes. [2018-11-12 19:10:53,526 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:10:53,774 INFO L415 sIntCurrentIteration]: We unified 169 AI predicates to 169 [2018-11-12 19:10:53,775 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:10:53,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:10:53,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-12 19:10:53,776 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:10:53,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 19:10:53,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 19:10:53,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:10:53,777 INFO L87 Difference]: Start difference. First operand 11525 states and 15517 transitions. Second operand 8 states. [2018-11-12 19:10:57,138 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:11:12,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:11:12,836 INFO L93 Difference]: Finished difference Result 23037 states and 31024 transitions. [2018-11-12 19:11:12,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:11:12,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 170 [2018-11-12 19:11:12,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:11:12,879 INFO L225 Difference]: With dead ends: 23037 [2018-11-12 19:11:12,880 INFO L226 Difference]: Without dead ends: 11518 [2018-11-12 19:11:12,914 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:11:12,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11518 states. [2018-11-12 19:11:13,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11518 to 11516. [2018-11-12 19:11:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11516 states. [2018-11-12 19:11:13,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11516 states to 11516 states and 15475 transitions. [2018-11-12 19:11:13,175 INFO L78 Accepts]: Start accepts. Automaton has 11516 states and 15475 transitions. Word has length 170 [2018-11-12 19:11:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:11:13,175 INFO L480 AbstractCegarLoop]: Abstraction has 11516 states and 15475 transitions. [2018-11-12 19:11:13,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 19:11:13,176 INFO L276 IsEmpty]: Start isEmpty. Operand 11516 states and 15475 transitions. [2018-11-12 19:11:13,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-12 19:11:13,184 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:11:13,184 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:11:13,185 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:11:13,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:11:13,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1907556257, now seen corresponding path program 1 times [2018-11-12 19:11:13,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:11:13,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:11:13,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:11:13,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:11:13,187 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:11:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:11:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:11:14,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:11:14,398 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:11:14,399 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-11-12 19:11:14,399 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [437], [439], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:11:14,405 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:11:14,405 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:11:14,516 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:11:15,999 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:11:15,999 INFO L272 AbstractInterpreter]: Visited 120 different actions 804 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 12905 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12905 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 19:11:16,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:11:16,027 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:11:16,686 INFO L227 lantSequenceWeakener]: Weakened 71 states. On average, predicates are now at 78.3% of their original sizes. [2018-11-12 19:11:16,687 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:11:19,881 INFO L415 sIntCurrentIteration]: We unified 265 AI predicates to 265 [2018-11-12 19:11:19,881 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:11:19,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:11:19,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [11] total 29 [2018-11-12 19:11:19,882 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:11:19,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:11:19,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:11:19,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:11:19,883 INFO L87 Difference]: Start difference. First operand 11516 states and 15475 transitions. Second operand 20 states. [2018-11-12 19:12:08,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:12:08,539 INFO L93 Difference]: Finished difference Result 25893 states and 34256 transitions. [2018-11-12 19:12:08,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-12 19:12:08,539 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 266 [2018-11-12 19:12:08,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:12:08,612 INFO L225 Difference]: With dead ends: 25893 [2018-11-12 19:12:08,612 INFO L226 Difference]: Without dead ends: 14691 [2018-11-12 19:12:08,665 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 285 GetRequests, 199 SyntacticMatches, 48 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=340, Invalid=1220, Unknown=0, NotChecked=0, Total=1560 [2018-11-12 19:12:08,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14691 states. [2018-11-12 19:12:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14691 to 13588. [2018-11-12 19:12:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13588 states. [2018-11-12 19:12:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13588 states to 13588 states and 17608 transitions. [2018-11-12 19:12:09,032 INFO L78 Accepts]: Start accepts. Automaton has 13588 states and 17608 transitions. Word has length 266 [2018-11-12 19:12:09,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:12:09,033 INFO L480 AbstractCegarLoop]: Abstraction has 13588 states and 17608 transitions. [2018-11-12 19:12:09,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 19:12:09,033 INFO L276 IsEmpty]: Start isEmpty. Operand 13588 states and 17608 transitions. [2018-11-12 19:12:09,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-11-12 19:12:09,052 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:12:09,053 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:12:09,053 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:12:09,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:12:09,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1004316157, now seen corresponding path program 1 times [2018-11-12 19:12:09,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:12:09,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:09,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:12:09,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:12:09,055 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:12:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:12:09,893 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:12:09,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:12:09,894 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:12:09,894 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 443 with the following transitions: [2018-11-12 19:12:09,896 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [437], [439], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [695], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [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], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [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], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:12:09,914 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:12:09,914 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:12:10,504 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:12:10,505 INFO L272 AbstractInterpreter]: Visited 295 different actions 584 times. Merged at 5 different actions 5 times. Never widened. Performed 7974 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7974 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 19:12:10,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:12:10,543 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:12:11,250 INFO L227 lantSequenceWeakener]: Weakened 94 states. On average, predicates are now at 81.97% of their original sizes. [2018-11-12 19:12:11,251 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:12:13,304 INFO L415 sIntCurrentIteration]: We unified 441 AI predicates to 441 [2018-11-12 19:12:13,304 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:12:13,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:12:13,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-12 19:12:13,305 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:12:13,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 19:12:13,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 19:12:13,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:12:13,307 INFO L87 Difference]: Start difference. First operand 13588 states and 17608 transitions. Second operand 21 states. [2018-11-12 19:12:16,872 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:13:13,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:13,751 INFO L93 Difference]: Finished difference Result 25715 states and 33972 transitions. [2018-11-12 19:13:13,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-12 19:13:13,752 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 442 [2018-11-12 19:13:13,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:13,810 INFO L225 Difference]: With dead ends: 25715 [2018-11-12 19:13:13,811 INFO L226 Difference]: Without dead ends: 14513 [2018-11-12 19:13:13,832 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 457 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2018-11-12 19:13:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14513 states. [2018-11-12 19:13:14,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14513 to 14501. [2018-11-12 19:13:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14501 states. [2018-11-12 19:13:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14501 states to 14501 states and 18597 transitions. [2018-11-12 19:13:14,078 INFO L78 Accepts]: Start accepts. Automaton has 14501 states and 18597 transitions. Word has length 442 [2018-11-12 19:13:14,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:14,079 INFO L480 AbstractCegarLoop]: Abstraction has 14501 states and 18597 transitions. [2018-11-12 19:13:14,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 19:13:14,079 INFO L276 IsEmpty]: Start isEmpty. Operand 14501 states and 18597 transitions. [2018-11-12 19:13:14,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-11-12 19:13:14,094 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:14,095 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:13:14,095 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:14,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:14,096 INFO L82 PathProgramCache]: Analyzing trace with hash -338117244, now seen corresponding path program 1 times [2018-11-12 19:13:14,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:14,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:14,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:14,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:14,097 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 54 proven. 154 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 19:13:15,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:13:15,479 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:13:15,480 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 446 with the following transitions: [2018-11-12 19:13:15,480 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [437], [439], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [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], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [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], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:13:15,485 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:13:15,486 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:13:15,711 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:13:16,996 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:13:16,996 INFO L272 AbstractInterpreter]: Visited 283 different actions 1120 times. Merged at 7 different actions 21 times. Never widened. Performed 18245 root evaluator evaluations with a maximum evaluation depth of 6. Performed 18245 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:13:17,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:17,031 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:13:18,164 INFO L227 lantSequenceWeakener]: Weakened 442 states. On average, predicates are now at 80.44% of their original sizes. [2018-11-12 19:13:18,164 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:13:18,252 INFO L415 sIntCurrentIteration]: We unified 444 AI predicates to 444 [2018-11-12 19:13:18,252 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:13:18,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:13:18,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2018-11-12 19:13:18,253 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:18,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 19:13:18,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 19:13:18,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:13:18,254 INFO L87 Difference]: Start difference. First operand 14501 states and 18597 transitions. Second operand 10 states. [2018-11-12 19:13:31,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:31,753 INFO L93 Difference]: Finished difference Result 30995 states and 41892 transitions. [2018-11-12 19:13:31,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 19:13:31,753 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 445 [2018-11-12 19:13:31,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:31,821 INFO L225 Difference]: With dead ends: 30995 [2018-11-12 19:13:31,821 INFO L226 Difference]: Without dead ends: 19793 [2018-11-12 19:13:31,851 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 452 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:13:31,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19793 states. [2018-11-12 19:13:32,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19793 to 19718. [2018-11-12 19:13:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19718 states. [2018-11-12 19:13:32,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19718 states to 19718 states and 25247 transitions. [2018-11-12 19:13:32,185 INFO L78 Accepts]: Start accepts. Automaton has 19718 states and 25247 transitions. Word has length 445 [2018-11-12 19:13:32,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:32,186 INFO L480 AbstractCegarLoop]: Abstraction has 19718 states and 25247 transitions. [2018-11-12 19:13:32,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 19:13:32,186 INFO L276 IsEmpty]: Start isEmpty. Operand 19718 states and 25247 transitions. [2018-11-12 19:13:32,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-11-12 19:13:32,210 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:32,211 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, 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, 2, 2, 2, 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] [2018-11-12 19:13:32,211 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:32,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:32,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1073158874, now seen corresponding path program 1 times [2018-11-12 19:13:32,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:32,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:32,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:32,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:32,213 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:32,716 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:13:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 225 proven. 159 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 19:13:33,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:13:33,748 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:13:33,748 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 501 with the following transitions: [2018-11-12 19:13:33,749 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [437], [439], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [695], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [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], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [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], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:13:33,754 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:13:33,754 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:13:34,073 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:13:34,782 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:13:34,782 INFO L272 AbstractInterpreter]: Visited 284 different actions 845 times. Merged at 7 different actions 15 times. Never widened. Performed 15636 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15636 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:13:34,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:34,787 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... [2018-11-12 19:13:38,999 INFO L227 lantSequenceWeakener]: Weakened 497 states. On average, predicates are now at 80.33% of their original sizes. [2018-11-12 19:13:38,999 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:13:39,015 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:13:39,020 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:13:39,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:13:39 BoogieIcfgContainer [2018-11-12 19:13:39,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:13:39,021 INFO L168 Benchmark]: Toolchain (without parser) took 208873.47 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 4.3 GB in the end (delta: -2.9 GB). Peak memory consumption was 681.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:13:39,023 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:13:39,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1339.92 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-12 19:13:39,024 INFO L168 Benchmark]: Boogie Procedure Inliner took 210.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -893.9 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-12 19:13:39,025 INFO L168 Benchmark]: Boogie Preprocessor took 177.53 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-12 19:13:39,026 INFO L168 Benchmark]: RCFGBuilder took 7142.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 302.1 MB). Peak memory consumption was 302.1 MB. Max. memory is 7.1 GB. [2018-11-12 19:13:39,026 INFO L168 Benchmark]: TraceAbstraction took 199998.27 ms. Allocated memory was 2.3 GB in the beginning and 5.1 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 4.3 GB in the end (delta: -2.4 GB). Peak memory consumption was 405.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:13:39,032 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1339.92 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 210.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -893.9 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 177.53 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7142.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 302.1 MB). Peak memory consumption was 302.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199998.27 ms. Allocated memory was 2.3 GB in the beginning and 5.1 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 4.3 GB in the end (delta: -2.4 GB). Peak memory consumption was 405.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 160). Cancelled while BasicCegarLoop was analyzing trace of length 501 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 199.9s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 171.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2598 SDtfs, 23900 SDslu, 3023 SDs, 0 SdLazy, 28604 SolverSat, 3438 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.6s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 1408 GetRequests, 1234 SyntacticMatches, 51 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19718occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.7s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9979542399592483 AbsIntWeakeningRatio, 0.07150715071507151 AbsIntAvgWeakeningVarsNumRemoved, 18.639163916391638 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 1570 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1948 NumberOfCodeBlocks, 1948 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1939 ConstructedInterpolants, 0 QuantifiedInterpolants, 2534286 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 657/866 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown