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/Problem12_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:17:09,198 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:17:09,200 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:17:09,212 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:17:09,212 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:17:09,213 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:17:09,214 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:17:09,216 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:17:09,218 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:17:09,219 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:17:09,220 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:17:09,220 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:17:09,221 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:17:09,222 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:17:09,223 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:17:09,224 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:17:09,225 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:17:09,227 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:17:09,229 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:17:09,230 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:17:09,231 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:17:09,233 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:17:09,235 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:17:09,235 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:17:09,236 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:17:09,237 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:17:09,238 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:17:09,239 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:17:09,239 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:17:09,241 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:17:09,241 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:17:09,241 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:17:09,242 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:17:09,242 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:17:09,243 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:17:09,244 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:17:09,244 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 [2018-11-07 20:17:09,259 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:17:09,260 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:17:09,260 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:17:09,261 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:17:09,261 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:17:09,261 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:17:09,261 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:17:09,261 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:17:09,262 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:17:09,262 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:17:09,262 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:17:09,262 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:17:09,262 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:17:09,263 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:17:09,263 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:17:09,264 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:17:09,264 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:17:09,264 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:17:09,264 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:17:09,264 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:17:09,265 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:17:09,265 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:17:09,265 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:17:09,265 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:17:09,266 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:17:09,266 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:17:09,266 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:17:09,266 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:17:09,266 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:17:09,267 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:17:09,267 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:17:09,267 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:17:09,267 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:17:09,267 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:17:09,268 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:17:09,323 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:17:09,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:17:09,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:17:09,343 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:17:09,344 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:17:09,344 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c [2018-11-07 20:17:09,403 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455034760/ad03d236747b4f7aad575a32337506af/FLAGff294e0c3 [2018-11-07 20:17:10,229 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:17:10,230 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c [2018-11-07 20:17:10,267 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455034760/ad03d236747b4f7aad575a32337506af/FLAGff294e0c3 [2018-11-07 20:17:10,289 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/455034760/ad03d236747b4f7aad575a32337506af [2018-11-07 20:17:10,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:17:10,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:17:10,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:17:10,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:17:10,313 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:17:10,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:17:10" (1/1) ... [2018-11-07 20:17:10,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1109e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:17:10, skipping insertion in model container [2018-11-07 20:17:10,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:17:10" (1/1) ... [2018-11-07 20:17:10,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:17:10,517 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:17:11,739 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:17:11,744 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:17:12,384 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:17:12,415 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:17:12,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:17:12 WrapperNode [2018-11-07 20:17:12,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:17:12,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:17:12,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:17:12,417 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:17:12,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:17:12" (1/1) ... [2018-11-07 20:17:12,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:17:12" (1/1) ... [2018-11-07 20:17:12,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:17:12,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:17:12,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:17:12,749 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:17:12,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:17:12" (1/1) ... [2018-11-07 20:17:12,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:17:12" (1/1) ... [2018-11-07 20:17:12,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:17:12" (1/1) ... [2018-11-07 20:17:12,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:17:12" (1/1) ... [2018-11-07 20:17:12,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:17:12" (1/1) ... [2018-11-07 20:17:12,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:17:12" (1/1) ... [2018-11-07 20:17:12,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:17:12" (1/1) ... [2018-11-07 20:17:13,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:17:13,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:17:13,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:17:13,012 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:17:13,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:17:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:17:13,081 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:17:13,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:17:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:17:13,082 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 20:17:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 20:17:13,082 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 20:17:13,082 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 20:17:13,082 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:17:13,083 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:17:13,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:17:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:17:13,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:17:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:17:13,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:17:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:17:22,318 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:17:22,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:17:22 BoogieIcfgContainer [2018-11-07 20:17:22,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:17:22,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:17:22,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:17:22,324 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:17:22,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:17:10" (1/3) ... [2018-11-07 20:17:22,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d08ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:17:22, skipping insertion in model container [2018-11-07 20:17:22,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:17:12" (2/3) ... [2018-11-07 20:17:22,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d08ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:17:22, skipping insertion in model container [2018-11-07 20:17:22,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:17:22" (3/3) ... [2018-11-07 20:17:22,330 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label15_true-unreach-call.c [2018-11-07 20:17:22,342 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:17:22,353 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:17:22,372 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:17:22,422 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:17:22,422 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:17:22,423 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:17:22,423 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:17:22,423 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:17:22,423 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:17:22,423 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:17:22,423 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:17:22,473 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 20:17:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-07 20:17:22,484 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:17:22,486 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:17:22,488 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:17:22,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:17:22,496 INFO L82 PathProgramCache]: Analyzing trace with hash 394736435, now seen corresponding path program 1 times [2018-11-07 20:17:22,499 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:17:22,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:22,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:17:22,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:22,561 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:17:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:17:23,144 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:17:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:17:23,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:17:23,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:17:23,261 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:17:23,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:17:23,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:17:23,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:17:23,286 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 20:17:31,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:17:31,560 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 20:17:31,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:17:31,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-11-07 20:17:31,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:17:31,615 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 20:17:31,615 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 20:17:31,637 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:17:31,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 20:17:31,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 20:17:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 20:17:31,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-11-07 20:17:31,813 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 61 [2018-11-07 20:17:31,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:17:31,814 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-11-07 20:17:31,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:17:31,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-11-07 20:17:31,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 20:17:31,828 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:17:31,828 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:17:31,828 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:17:31,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:17:31,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2085230804, now seen corresponding path program 1 times [2018-11-07 20:17:31,830 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:17:31,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:31,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:17:31,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:31,832 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:17:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:17:32,254 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:17:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:17:32,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:17:32,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:17:32,383 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:17:32,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:17:32,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:17:32,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:17:32,386 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-11-07 20:17:41,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:17:41,927 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-11-07 20:17:41,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:17:41,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-11-07 20:17:41,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:17:41,951 INFO L225 Difference]: With dead ends: 4818 [2018-11-07 20:17:41,951 INFO L226 Difference]: Without dead ends: 3220 [2018-11-07 20:17:41,958 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:17:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-11-07 20:17:42,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-11-07 20:17:42,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-11-07 20:17:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-11-07 20:17:42,076 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 135 [2018-11-07 20:17:42,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:17:42,076 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-11-07 20:17:42,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:17:42,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-11-07 20:17:42,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 20:17:42,084 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:17:42,084 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:17:42,084 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:17:42,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:17:42,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1091528155, now seen corresponding path program 1 times [2018-11-07 20:17:42,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:17:42,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:42,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:17:42,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:42,087 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:17:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:17:42,357 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:17:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:17:42,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:17:42,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:17:42,481 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:17:42,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:17:42,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:17:42,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:17:42,483 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-11-07 20:17:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:17:53,590 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-11-07 20:17:53,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:17:53,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-07 20:17:53,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:17:53,647 INFO L225 Difference]: With dead ends: 11148 [2018-11-07 20:17:53,648 INFO L226 Difference]: Without dead ends: 7968 [2018-11-07 20:17:53,664 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:17:53,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-11-07 20:17:53,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-11-07 20:17:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-11-07 20:17:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-11-07 20:17:53,926 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 140 [2018-11-07 20:17:53,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:17:53,927 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-11-07 20:17:53,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:17:53,928 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-11-07 20:17:53,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-11-07 20:17:53,931 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:17:53,932 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:17:53,932 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:17:53,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:17:53,932 INFO L82 PathProgramCache]: Analyzing trace with hash 266956725, now seen corresponding path program 1 times [2018-11-07 20:17:53,933 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:17:53,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:53,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:17:53,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:17:53,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:17:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:17:54,250 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:17:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:17:54,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:17:54,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:17:54,442 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:17:54,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:17:54,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:17:54,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:17:54,444 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-11-07 20:18:03,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:18:03,046 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-11-07 20:18:03,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:18:03,047 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-11-07 20:18:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:18:03,121 INFO L225 Difference]: With dead ends: 22224 [2018-11-07 20:18:03,122 INFO L226 Difference]: Without dead ends: 14306 [2018-11-07 20:18:03,162 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 [2018-11-07 20:18:03,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-11-07 20:18:03,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-11-07 20:18:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-11-07 20:18:03,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-11-07 20:18:03,498 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 148 [2018-11-07 20:18:03,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:18:03,499 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-11-07 20:18:03,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:18:03,499 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-11-07 20:18:03,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 20:18:03,507 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:18:03,507 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:18:03,507 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:18:03,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:18:03,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1611009688, now seen corresponding path program 1 times [2018-11-07 20:18:03,508 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:18:03,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:03,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:18:03,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:03,509 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:18:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:18:03,784 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:18:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:18:03,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:18:03,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:18:03,929 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:18:03,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:18:03,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:18:03,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:18:03,930 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-11-07 20:18:13,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:18:13,486 INFO L93 Difference]: Finished difference Result 35956 states and 55845 transitions. [2018-11-07 20:18:13,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:18:13,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-11-07 20:18:13,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:18:13,584 INFO L225 Difference]: With dead ends: 35956 [2018-11-07 20:18:13,584 INFO L226 Difference]: Without dead ends: 21743 [2018-11-07 20:18:13,633 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 [2018-11-07 20:18:13,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21743 states. [2018-11-07 20:18:14,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21743 to 21651. [2018-11-07 20:18:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21651 states. [2018-11-07 20:18:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21651 states to 21651 states and 30247 transitions. [2018-11-07 20:18:14,107 INFO L78 Accepts]: Start accepts. Automaton has 21651 states and 30247 transitions. Word has length 181 [2018-11-07 20:18:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:18:14,108 INFO L480 AbstractCegarLoop]: Abstraction has 21651 states and 30247 transitions. [2018-11-07 20:18:14,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:18:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand 21651 states and 30247 transitions. [2018-11-07 20:18:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 20:18:14,124 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:18:14,124 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:18:14,124 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:18:14,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:18:14,125 INFO L82 PathProgramCache]: Analyzing trace with hash -849945464, now seen corresponding path program 1 times [2018-11-07 20:18:14,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:18:14,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:14,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:18:14,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:18:14,128 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:18:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:18:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 111 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 20:18:14,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:18:14,736 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:18:14,737 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-11-07 20:18:14,740 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2255], [2257], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2460], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:18:14,798 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:18:14,798 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:18:15,665 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:18:15,667 INFO L272 AbstractInterpreter]: Visited 103 different actions 199 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:18:15,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:18:15,714 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:18:16,301 INFO L227 lantSequenceWeakener]: Weakened 229 states. On average, predicates are now at 75.75% of their original sizes. [2018-11-07 20:18:16,301 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:18:17,066 INFO L415 sIntCurrentIteration]: We unified 231 AI predicates to 231 [2018-11-07 20:18:17,066 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:18:17,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:18:17,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 20:18:17,067 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:18:17,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:18:17,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:18:17,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:18:17,068 INFO L87 Difference]: Start difference. First operand 21651 states and 30247 transitions. Second operand 11 states. [2018-11-07 20:18:25,732 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:19:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:19:11,756 INFO L93 Difference]: Finished difference Result 45606 states and 63680 transitions. [2018-11-07 20:19:11,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 20:19:11,757 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 232 [2018-11-07 20:19:11,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:19:11,829 INFO L225 Difference]: With dead ends: 45606 [2018-11-07 20:19:11,829 INFO L226 Difference]: Without dead ends: 23961 [2018-11-07 20:19:11,876 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 240 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:19:11,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23961 states. [2018-11-07 20:19:12,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23961 to 23958. [2018-11-07 20:19:12,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23958 states. [2018-11-07 20:19:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23958 states to 23958 states and 32580 transitions. [2018-11-07 20:19:12,303 INFO L78 Accepts]: Start accepts. Automaton has 23958 states and 32580 transitions. Word has length 232 [2018-11-07 20:19:12,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:19:12,304 INFO L480 AbstractCegarLoop]: Abstraction has 23958 states and 32580 transitions. [2018-11-07 20:19:12,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:19:12,304 INFO L276 IsEmpty]: Start isEmpty. Operand 23958 states and 32580 transitions. [2018-11-07 20:19:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-11-07 20:19:12,325 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:19:12,325 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, 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, 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] [2018-11-07 20:19:12,326 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:19:12,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:19:12,326 INFO L82 PathProgramCache]: Analyzing trace with hash -81030177, now seen corresponding path program 1 times [2018-11-07 20:19:12,326 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:19:12,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:12,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:19:12,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:12,328 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:19:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:19:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2018-11-07 20:19:13,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:19:13,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:19:13,030 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:19:13,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:19:13,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:19:13,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:19:13,032 INFO L87 Difference]: Start difference. First operand 23958 states and 32580 transitions. Second operand 5 states. [2018-11-07 20:19:21,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:19:21,882 INFO L93 Difference]: Finished difference Result 67669 states and 97498 transitions. [2018-11-07 20:19:21,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 20:19:21,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 378 [2018-11-07 20:19:21,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:19:22,019 INFO L225 Difference]: With dead ends: 67669 [2018-11-07 20:19:22,019 INFO L226 Difference]: Without dead ends: 46024 [2018-11-07 20:19:22,069 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:19:22,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46024 states. [2018-11-07 20:19:22,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46024 to 45588. [2018-11-07 20:19:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45588 states. [2018-11-07 20:19:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45588 states to 45588 states and 61068 transitions. [2018-11-07 20:19:22,950 INFO L78 Accepts]: Start accepts. Automaton has 45588 states and 61068 transitions. Word has length 378 [2018-11-07 20:19:22,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:19:22,950 INFO L480 AbstractCegarLoop]: Abstraction has 45588 states and 61068 transitions. [2018-11-07 20:19:22,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:19:22,951 INFO L276 IsEmpty]: Start isEmpty. Operand 45588 states and 61068 transitions. [2018-11-07 20:19:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-11-07 20:19:22,978 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:19:22,979 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, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:19:22,979 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:19:22,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:19:22,980 INFO L82 PathProgramCache]: Analyzing trace with hash -653845554, now seen corresponding path program 1 times [2018-11-07 20:19:22,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:19:22,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:22,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:19:22,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:19:22,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:19:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:19:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 232 proven. 133 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 20:19:23,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:19:23,948 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:19:23,948 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 404 with the following transitions: [2018-11-07 20:19:23,949 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2255], [2257], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2376], [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], [2568], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:19:23,956 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:19:23,956 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:19:24,140 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:19:24,390 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:19:24,391 INFO L272 AbstractInterpreter]: Visited 155 different actions 306 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:19:24,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:19:24,399 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:19:25,216 INFO L227 lantSequenceWeakener]: Weakened 149 states. On average, predicates are now at 76.51% of their original sizes. [2018-11-07 20:19:25,217 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:19:27,836 INFO L415 sIntCurrentIteration]: We unified 402 AI predicates to 402 [2018-11-07 20:19:27,837 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:19:27,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:19:27,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [12] total 31 [2018-11-07 20:19:27,837 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:19:27,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 20:19:27,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 20:19:27,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:19:27,839 INFO L87 Difference]: Start difference. First operand 45588 states and 61068 transitions. Second operand 21 states. [2018-11-07 20:20:27,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:20:27,107 INFO L93 Difference]: Finished difference Result 89933 states and 121199 transitions. [2018-11-07 20:20:27,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-07 20:20:27,107 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 403 [2018-11-07 20:20:27,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:20:27,237 INFO L225 Difference]: With dead ends: 89933 [2018-11-07 20:20:27,237 INFO L226 Difference]: Without dead ends: 46658 [2018-11-07 20:20:27,297 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 421 GetRequests, 341 SyntacticMatches, 42 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=296, Invalid=1264, Unknown=0, NotChecked=0, Total=1560 [2018-11-07 20:20:27,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46658 states. [2018-11-07 20:20:28,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46658 to 46653. [2018-11-07 20:20:28,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46653 states. [2018-11-07 20:20:28,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46653 states to 46653 states and 62174 transitions. [2018-11-07 20:20:28,099 INFO L78 Accepts]: Start accepts. Automaton has 46653 states and 62174 transitions. Word has length 403 [2018-11-07 20:20:28,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:20:28,099 INFO L480 AbstractCegarLoop]: Abstraction has 46653 states and 62174 transitions. [2018-11-07 20:20:28,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 20:20:28,099 INFO L276 IsEmpty]: Start isEmpty. Operand 46653 states and 62174 transitions. [2018-11-07 20:20:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-11-07 20:20:28,126 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:20:28,126 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, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:20:28,127 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:20:28,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:20:28,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1814016534, now seen corresponding path program 1 times [2018-11-07 20:20:28,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:20:28,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:20:28,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:20:28,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:20:28,129 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:20:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:20:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 14 proven. 154 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-11-07 20:20:28,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:20:28,656 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:20:28,656 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 408 with the following transitions: [2018-11-07 20:20:28,657 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2255], [2257], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2376], [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], [2568], [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], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:20:28,663 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:20:28,663 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:20:28,841 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:20:30,299 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:20:30,299 INFO L272 AbstractInterpreter]: Visited 160 different actions 792 times. Merged at 8 different actions 39 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 20:20:30,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:20:30,311 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:20:30,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:20:30,312 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:20:30,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:20:30,323 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:20:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:20:30,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:20:31,484 WARN L179 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 24 [2018-11-07 20:20:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 256 proven. 57 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-11-07 20:20:31,981 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:20:32,238 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-07 20:20:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-11-07 20:20:32,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 20:20:32,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 12 [2018-11-07 20:20:32,621 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:20:32,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:20:32,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:20:32,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-11-07 20:20:32,623 INFO L87 Difference]: Start difference. First operand 46653 states and 62174 transitions. Second operand 3 states. [2018-11-07 20:20:41,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:20:41,219 INFO L93 Difference]: Finished difference Result 131540 states and 185871 transitions. [2018-11-07 20:20:41,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:20:41,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 407 [2018-11-07 20:20:41,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:20:41,570 INFO L225 Difference]: With dead ends: 131540 [2018-11-07 20:20:41,570 INFO L226 Difference]: Without dead ends: 88265 Received shutdown request... [2018-11-07 20:20:42,284 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 815 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-11-07 20:20:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88265 states. [2018-11-07 20:20:42,340 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:20:42,345 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:20:42,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:20:42 BoogieIcfgContainer [2018-11-07 20:20:42,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:20:42,347 INFO L168 Benchmark]: Toolchain (without parser) took 212042.90 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-07 20:20:42,348 INFO L168 Benchmark]: CDTParser took 1.30 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. [2018-11-07 20:20:42,348 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2110.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-07 20:20:42,349 INFO L168 Benchmark]: Boogie Procedure Inliner took 331.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 20:20:42,350 INFO L168 Benchmark]: Boogie Preprocessor took 263.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:20:42,351 INFO L168 Benchmark]: RCFGBuilder took 9307.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 656.0 MB). Peak memory consumption was 656.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:20:42,352 INFO L168 Benchmark]: TraceAbstraction took 200025.14 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-07 20:20:42,357 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.30 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 2110.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 331.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 263.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9307.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 656.0 MB). Peak memory consumption was 656.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200025.14 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 174). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 199.9s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 180.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3946 SDtfs, 27874 SDslu, 1473 SDs, 0 SdLazy, 50701 SolverSat, 8710 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1542 GetRequests, 1394 SyntacticMatches, 50 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46653occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.0s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9974930117161724 AbsIntWeakeningRatio, 0.0947867298578199 AbsIntAvgWeakeningVarsNumRemoved, 19.09478672985782 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 701 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 2492 NumberOfCodeBlocks, 2492 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2888 ConstructedInterpolants, 57 QuantifiedInterpolants, 3770092 SizeOfPredicates, 3 NumberOfNonLiveVariables, 666 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 2126/2537 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown