java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label22_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:32:58,220 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:32:58,222 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:32:58,235 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:32:58,235 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:32:58,236 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:32:58,238 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:32:58,239 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:32:58,241 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:32:58,242 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:32:58,243 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:32:58,244 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:32:58,244 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:32:58,245 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:32:58,247 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:32:58,247 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:32:58,248 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:32:58,250 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:32:58,253 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:32:58,254 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:32:58,256 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:32:58,257 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:32:58,259 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:32:58,260 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:32:58,260 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:32:58,261 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:32:58,262 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:32:58,263 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:32:58,264 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:32:58,265 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:32:58,265 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:32:58,266 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 18:32:58,268 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 18:32:58,284 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:32:58,284 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:32:58,285 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:32:58,285 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:32:58,286 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:32:58,286 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:32:58,286 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:32:58,286 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:32:58,286 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:32:58,287 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:32:58,287 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:32:58,287 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:32:58,287 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:32:58,288 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:32:58,288 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:32:58,288 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:32:58,289 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:32:58,289 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:32:58,289 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:32:58,289 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:32:58,289 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:32:58,290 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:32:58,290 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:32:58,290 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:32:58,290 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:32:58,290 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:32:58,291 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:32:58,291 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:32:58,291 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:32:58,291 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:32:58,291 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:32:58,292 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:32:58,292 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:32:58,292 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:32:58,292 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:32:58,336 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:32:58,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:32:58,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:32:58,357 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:32:58,357 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:32:58,358 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label22_false-unreach-call.c [2018-11-07 18:32:58,427 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b8f283ba/bcd48eb2297043e39ffa4c55646a4729/FLAGf2ad1d6c8 [2018-11-07 18:32:59,226 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:32:59,227 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label22_false-unreach-call.c [2018-11-07 18:32:59,272 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b8f283ba/bcd48eb2297043e39ffa4c55646a4729/FLAGf2ad1d6c8 [2018-11-07 18:32:59,295 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b8f283ba/bcd48eb2297043e39ffa4c55646a4729 [2018-11-07 18:32:59,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:32:59,311 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:32:59,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:32:59,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:32:59,319 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:32:59,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:32:59" (1/1) ... [2018-11-07 18:32:59,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672c8373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:32:59, skipping insertion in model container [2018-11-07 18:32:59,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:32:59" (1/1) ... [2018-11-07 18:32:59,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:32:59,605 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:33:01,703 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:33:01,709 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:33:02,906 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:33:02,963 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:33:02,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:33:02 WrapperNode [2018-11-07 18:33:02,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:33:02,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:33:02,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:33:02,965 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:33:02,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:33:02" (1/1) ... [2018-11-07 18:33:03,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:33:02" (1/1) ... [2018-11-07 18:33:03,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:33:03,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:33:03,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:33:03,485 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:33:03,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:33:02" (1/1) ... [2018-11-07 18:33:03,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:33:02" (1/1) ... [2018-11-07 18:33:03,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:33:02" (1/1) ... [2018-11-07 18:33:03,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:33:02" (1/1) ... [2018-11-07 18:33:03,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:33:02" (1/1) ... [2018-11-07 18:33:03,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:33:02" (1/1) ... [2018-11-07 18:33:03,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:33:02" (1/1) ... [2018-11-07 18:33:03,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:33:03,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:33:03,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:33:03,893 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:33:03,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:33:02" (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 18:33:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:33:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:33:03,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:33:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 18:33:03,961 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 18:33:03,961 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 18:33:03,963 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 18:33:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 18:33:03,963 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 18:33:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 18:33:03,963 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 18:33:03,963 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:33:03,965 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:33:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:33:03,965 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:33:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:33:03,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:33:03,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:33:03,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:33:18,578 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:33:18,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:33:18 BoogieIcfgContainer [2018-11-07 18:33:18,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:33:18,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:33:18,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:33:18,584 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:33:18,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:32:59" (1/3) ... [2018-11-07 18:33:18,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205caea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:33:18, skipping insertion in model container [2018-11-07 18:33:18,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:33:02" (2/3) ... [2018-11-07 18:33:18,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205caea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:33:18, skipping insertion in model container [2018-11-07 18:33:18,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:33:18" (3/3) ... [2018-11-07 18:33:18,588 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label22_false-unreach-call.c [2018-11-07 18:33:18,598 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:33:18,610 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:33:18,628 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:33:18,683 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:33:18,683 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:33:18,684 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:33:18,684 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:33:18,684 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:33:18,684 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:33:18,684 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:33:18,684 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:33:18,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 18:33:18,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-07 18:33:18,751 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:33:18,753 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] [2018-11-07 18:33:18,755 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:33:18,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:33:18,760 INFO L82 PathProgramCache]: Analyzing trace with hash 655645660, now seen corresponding path program 1 times [2018-11-07 18:33:18,763 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:33:18,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:33:18,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:33:18,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:33:18,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:33:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:33:19,267 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 18:33:19,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:33:19,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:33:19,270 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:33:19,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:33:19,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:33:19,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:33:19,298 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 18:33:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:33:32,767 INFO L93 Difference]: Finished difference Result 5034 states and 9499 transitions. [2018-11-07 18:33:32,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:33:32,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-11-07 18:33:32,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:33:32,818 INFO L225 Difference]: With dead ends: 5034 [2018-11-07 18:33:32,818 INFO L226 Difference]: Without dead ends: 3254 [2018-11-07 18:33:32,840 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 [2018-11-07 18:33:32,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2018-11-07 18:33:33,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3207. [2018-11-07 18:33:33,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3207 states. [2018-11-07 18:33:33,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 5994 transitions. [2018-11-07 18:33:33,060 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 5994 transitions. Word has length 36 [2018-11-07 18:33:33,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:33:33,061 INFO L480 AbstractCegarLoop]: Abstraction has 3207 states and 5994 transitions. [2018-11-07 18:33:33,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:33:33,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 5994 transitions. [2018-11-07 18:33:33,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-07 18:33:33,074 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:33:33,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:33,076 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:33:33,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:33:33,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1545584319, now seen corresponding path program 1 times [2018-11-07 18:33:33,077 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:33:33,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:33:33,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:33:33,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:33:33,080 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:33:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:33:33,661 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:33:33,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:33:33,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:33:33,662 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:33:33,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:33:33,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:33:33,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:33:33,665 INFO L87 Difference]: Start difference. First operand 3207 states and 5994 transitions. Second operand 6 states. [2018-11-07 18:33:55,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:33:55,237 INFO L93 Difference]: Finished difference Result 9588 states and 17981 transitions. [2018-11-07 18:33:55,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 18:33:55,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-11-07 18:33:55,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:33:55,279 INFO L225 Difference]: With dead ends: 9588 [2018-11-07 18:33:55,279 INFO L226 Difference]: Without dead ends: 6387 [2018-11-07 18:33:55,291 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:33:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6387 states. [2018-11-07 18:33:55,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6387 to 6268. [2018-11-07 18:33:55,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6268 states. [2018-11-07 18:33:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6268 states to 6268 states and 11297 transitions. [2018-11-07 18:33:55,491 INFO L78 Accepts]: Start accepts. Automaton has 6268 states and 11297 transitions. Word has length 109 [2018-11-07 18:33:55,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:33:55,492 INFO L480 AbstractCegarLoop]: Abstraction has 6268 states and 11297 transitions. [2018-11-07 18:33:55,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:33:55,492 INFO L276 IsEmpty]: Start isEmpty. Operand 6268 states and 11297 transitions. [2018-11-07 18:33:55,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-07 18:33:55,495 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:33:55,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:55,496 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:33:55,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:33:55,497 INFO L82 PathProgramCache]: Analyzing trace with hash 205222398, now seen corresponding path program 1 times [2018-11-07 18:33:55,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:33:55,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:33:55,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:33:55,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:33:55,501 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:33:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:33:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:33:55,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:33:55,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:33:55,725 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:33:55,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:33:55,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:33:55,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:33:55,726 INFO L87 Difference]: Start difference. First operand 6268 states and 11297 transitions. Second operand 5 states. [2018-11-07 18:33:56,680 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-07 18:34:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:34:12,529 INFO L93 Difference]: Finished difference Result 18916 states and 34267 transitions. [2018-11-07 18:34:12,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:34:12,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-11-07 18:34:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:34:12,587 INFO L225 Difference]: With dead ends: 18916 [2018-11-07 18:34:12,587 INFO L226 Difference]: Without dead ends: 12654 [2018-11-07 18:34:12,606 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:34:12,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12654 states. [2018-11-07 18:34:12,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12654 to 12388. [2018-11-07 18:34:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12388 states. [2018-11-07 18:34:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12388 states to 12388 states and 18868 transitions. [2018-11-07 18:34:12,933 INFO L78 Accepts]: Start accepts. Automaton has 12388 states and 18868 transitions. Word has length 123 [2018-11-07 18:34:12,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:34:12,934 INFO L480 AbstractCegarLoop]: Abstraction has 12388 states and 18868 transitions. [2018-11-07 18:34:12,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:34:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 12388 states and 18868 transitions. [2018-11-07 18:34:12,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-11-07 18:34:12,944 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:34:12,944 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:34:12,944 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:34:12,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:34:12,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1515004663, now seen corresponding path program 1 times [2018-11-07 18:34:12,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:34:12,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:34:12,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:34:12,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:34:12,951 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:34:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:34:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 58 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:34:13,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:34:13,560 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:34:13,561 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2018-11-07 18:34:13,570 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5414], [5416], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5822], [5823], [5827], [5838], [5841], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 18:34:13,643 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:34:13,643 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:34:14,114 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:34:14,115 INFO L272 AbstractInterpreter]: Visited 95 different actions 95 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 18:34:14,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:34:14,160 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:34:14,710 INFO L227 lantSequenceWeakener]: Weakened 204 states. On average, predicates are now at 75.28% of their original sizes. [2018-11-07 18:34:14,710 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:34:14,792 INFO L415 sIntCurrentIteration]: We unified 212 AI predicates to 212 [2018-11-07 18:34:14,792 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:34:14,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:34:14,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 18:34:14,794 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:34:14,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:34:14,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:34:14,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:34:14,795 INFO L87 Difference]: Start difference. First operand 12388 states and 18868 transitions. Second operand 7 states. [2018-11-07 18:34:19,557 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:35:47,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:35:47,529 INFO L93 Difference]: Finished difference Result 26162 states and 39329 transitions. [2018-11-07 18:35:47,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:35:47,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2018-11-07 18:35:47,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:35:47,565 INFO L225 Difference]: With dead ends: 26162 [2018-11-07 18:35:47,566 INFO L226 Difference]: Without dead ends: 13780 [2018-11-07 18:35:47,589 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 213 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:35:47,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13780 states. [2018-11-07 18:35:47,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13780 to 13778. [2018-11-07 18:35:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13778 states. [2018-11-07 18:35:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13778 states to 13778 states and 20272 transitions. [2018-11-07 18:35:47,841 INFO L78 Accepts]: Start accepts. Automaton has 13778 states and 20272 transitions. Word has length 213 [2018-11-07 18:35:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:35:47,841 INFO L480 AbstractCegarLoop]: Abstraction has 13778 states and 20272 transitions. [2018-11-07 18:35:47,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:35:47,842 INFO L276 IsEmpty]: Start isEmpty. Operand 13778 states and 20272 transitions. [2018-11-07 18:35:47,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2018-11-07 18:35:47,848 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:35:47,848 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:47,849 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:35:47,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:35:47,849 INFO L82 PathProgramCache]: Analyzing trace with hash 142701738, now seen corresponding path program 1 times [2018-11-07 18:35:47,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:35:47,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:35:47,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:35:47,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:35:47,851 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:35:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:35:49,498 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 93 proven. 166 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 18:35:49,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:35:49,498 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:35:49,500 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 454 with the following transitions: [2018-11-07 18:35:49,501 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5414], [5416], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5822], [5823], [5827], [5838], [5841], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6560], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 18:35:49,517 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:35:49,518 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:35:50,149 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:35:50,149 INFO L272 AbstractInterpreter]: Visited 249 different actions 491 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 18:35:50,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:35:50,190 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:35:51,286 INFO L227 lantSequenceWeakener]: Weakened 125 states. On average, predicates are now at 75.13% of their original sizes. [2018-11-07 18:35:51,286 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:35:52,418 INFO L415 sIntCurrentIteration]: We unified 452 AI predicates to 452 [2018-11-07 18:35:52,418 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:35:52,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:35:52,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [5] total 28 [2018-11-07 18:35:52,418 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:35:52,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 18:35:52,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 18:35:52,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2018-11-07 18:35:52,420 INFO L87 Difference]: Start difference. First operand 13778 states and 20272 transitions. Second operand 25 states. [2018-11-07 18:36:13,416 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 18:36:22,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 18:36:22,344 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:36:22,349 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:36:22,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:36:22 BoogieIcfgContainer [2018-11-07 18:36:22,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:36:22,350 INFO L168 Benchmark]: Toolchain (without parser) took 203041.09 ms. Allocated memory was 1.5 GB in the beginning and 5.8 GB in the end (delta: 4.3 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-07 18:36:22,352 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:36:22,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3651.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. [2018-11-07 18:36:22,353 INFO L168 Benchmark]: Boogie Procedure Inliner took 519.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 863.5 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:36:22,354 INFO L168 Benchmark]: Boogie Preprocessor took 408.38 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2018-11-07 18:36:22,355 INFO L168 Benchmark]: RCFGBuilder took 14686.13 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 143.1 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 534.6 MB). Peak memory consumption was 677.8 MB. Max. memory is 7.1 GB. [2018-11-07 18:36:22,356 INFO L168 Benchmark]: TraceAbstraction took 183769.51 ms. Allocated memory was 2.6 GB in the beginning and 5.8 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -936.4 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 18:36:22,362 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3651.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.6 MB). Peak memory consumption was 401.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 519.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 863.5 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 408.38 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14686.13 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 143.1 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 534.6 MB). Peak memory consumption was 677.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 183769.51 ms. Allocated memory was 2.6 GB in the beginning and 5.8 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 2.7 GB in the end (delta: -936.4 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 103). Cancelled while BasicCegarLoop was constructing difference of abstraction (13778states) and FLOYD_HOARE automaton (currently 23 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (3536 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 183.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 174.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3701 SDtfs, 26174 SDslu, 3184 SDs, 0 SdLazy, 33629 SolverSat, 5884 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 699 GetRequests, 645 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13778occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9978428337857357 AbsIntWeakeningRatio, 0.09036144578313253 AbsIntAvgWeakeningVarsNumRemoved, 9.725903614457831 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 4 MinimizatonAttempts, 434 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 934 NumberOfCodeBlocks, 934 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 929 ConstructedInterpolants, 0 QuantifiedInterpolants, 824470 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 306/554 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown