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/Problem16_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:55:49,417 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:55:49,419 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:55:49,432 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:55:49,432 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:55:49,433 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:55:49,434 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:55:49,436 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:55:49,438 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:55:49,439 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:55:49,440 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:55:49,440 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:55:49,441 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:55:49,442 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:55:49,443 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:55:49,444 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:55:49,445 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:55:49,447 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:55:49,451 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:55:49,453 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:55:49,457 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:55:49,458 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:55:49,462 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:55:49,462 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:55:49,462 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:55:49,463 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:55:49,464 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:55:49,468 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:55:49,469 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:55:49,471 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:55:49,472 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:55:49,473 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:55:49,473 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:55:49,473 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:55:49,474 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:55:49,475 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:55:49,477 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 20:55:49,504 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:55:49,505 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:55:49,506 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:55:49,506 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:55:49,506 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:55:49,506 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:55:49,506 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:55:49,507 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:55:49,507 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:55:49,507 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:55:49,507 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:55:49,507 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:55:49,508 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:55:49,508 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:55:49,509 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:55:49,509 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:55:49,509 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:55:49,509 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:55:49,509 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:55:49,509 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:55:49,510 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:55:49,510 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:55:49,510 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:55:49,510 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:55:49,510 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:55:49,511 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:55:49,511 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:55:49,511 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:55:49,511 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:55:49,512 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:55:49,512 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:55:49,512 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:55:49,512 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:55:49,512 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:55:49,512 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:55:49,575 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:55:49,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:55:49,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:55:49,596 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:55:49,596 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:55:49,597 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label47_true-unreach-call.c [2018-11-07 20:55:49,661 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f80946d86/3b8f1a8bf87b43d4a1dd4b8f1ef899b0/FLAGfa8777d4d [2018-11-07 20:55:50,333 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:55:50,334 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label47_true-unreach-call.c [2018-11-07 20:55:50,350 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f80946d86/3b8f1a8bf87b43d4a1dd4b8f1ef899b0/FLAGfa8777d4d [2018-11-07 20:55:50,366 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f80946d86/3b8f1a8bf87b43d4a1dd4b8f1ef899b0 [2018-11-07 20:55:50,377 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:55:50,379 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:55:50,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:55:50,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:55:50,386 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:55:50,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:55:50" (1/1) ... [2018-11-07 20:55:50,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc80c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:50, skipping insertion in model container [2018-11-07 20:55:50,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:55:50" (1/1) ... [2018-11-07 20:55:50,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:55:50,487 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:55:51,329 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:55:51,334 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:55:51,548 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:55:51,569 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:55:51,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:51 WrapperNode [2018-11-07 20:55:51,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:55:51,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:55:51,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:55:51,571 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:55:51,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:51" (1/1) ... [2018-11-07 20:55:51,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:51" (1/1) ... [2018-11-07 20:55:51,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:55:51,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:55:51,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:55:51,768 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:55:51,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:51" (1/1) ... [2018-11-07 20:55:51,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:51" (1/1) ... [2018-11-07 20:55:51,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:51" (1/1) ... [2018-11-07 20:55:51,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:51" (1/1) ... [2018-11-07 20:55:51,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:51" (1/1) ... [2018-11-07 20:55:51,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:51" (1/1) ... [2018-11-07 20:55:51,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:51" (1/1) ... [2018-11-07 20:55:51,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:55:51,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:55:51,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:55:51,934 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:55:51,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:51" (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 20:55:52,009 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:55:52,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:55:52,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:55:52,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:55:52,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:55:52,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:55:52,011 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:55:52,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:55:52,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:55:52,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:55:52,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:55:58,233 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:55:58,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:55:58 BoogieIcfgContainer [2018-11-07 20:55:58,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:55:58,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:55:58,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:55:58,239 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:55:58,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:55:50" (1/3) ... [2018-11-07 20:55:58,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb1cd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:55:58, skipping insertion in model container [2018-11-07 20:55:58,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:51" (2/3) ... [2018-11-07 20:55:58,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb1cd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:55:58, skipping insertion in model container [2018-11-07 20:55:58,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:55:58" (3/3) ... [2018-11-07 20:55:58,244 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label47_true-unreach-call.c [2018-11-07 20:55:58,255 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:55:58,266 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:55:58,286 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:55:58,330 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:55:58,330 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:55:58,331 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:55:58,331 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:55:58,331 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:55:58,331 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:55:58,331 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:55:58,332 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:55:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 20:55:58,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-07 20:55:58,378 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:55:58,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:55:58,382 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:55:58,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:55:58,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1865210036, now seen corresponding path program 1 times [2018-11-07 20:55:58,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:55:58,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:58,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:55:58,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:58,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:55:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:55:59,021 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:55:59,175 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 20:55:59,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:55:59,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:55:59,178 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:55:59,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:55:59,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:55:59,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:55:59,203 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 20:56:03,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:03,201 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 20:56:03,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:56:03,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-11-07 20:56:03,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:03,228 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 20:56:03,228 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 20:56:03,237 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:56:03,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 20:56:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 20:56:03,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 20:56:03,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-11-07 20:56:03,359 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 72 [2018-11-07 20:56:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:03,360 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-11-07 20:56:03,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:56:03,360 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-11-07 20:56:03,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 20:56:03,370 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:03,370 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, 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] [2018-11-07 20:56:03,371 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:03,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:03,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1724840118, now seen corresponding path program 1 times [2018-11-07 20:56:03,372 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:03,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:03,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:03,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:03,374 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:56:03,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:56:03,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:56:03,716 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:03,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:56:03,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:56:03,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:56:03,719 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-11-07 20:56:09,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:09,184 INFO L93 Difference]: Finished difference Result 2189 states and 4061 transitions. [2018-11-07 20:56:09,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:56:09,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-11-07 20:56:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:09,197 INFO L225 Difference]: With dead ends: 2189 [2018-11-07 20:56:09,198 INFO L226 Difference]: Without dead ends: 1451 [2018-11-07 20:56:09,201 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:56:09,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2018-11-07 20:56:09,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1441. [2018-11-07 20:56:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1441 states. [2018-11-07 20:56:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 2402 transitions. [2018-11-07 20:56:09,267 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 2402 transitions. Word has length 144 [2018-11-07 20:56:09,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:09,267 INFO L480 AbstractCegarLoop]: Abstraction has 1441 states and 2402 transitions. [2018-11-07 20:56:09,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:56:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 2402 transitions. [2018-11-07 20:56:09,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-07 20:56:09,274 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:09,274 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:56:09,274 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:09,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:09,275 INFO L82 PathProgramCache]: Analyzing trace with hash 952049591, now seen corresponding path program 1 times [2018-11-07 20:56:09,275 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:09,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:09,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:09,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:09,277 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 20:56:09,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:56:09,545 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:56:09,546 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 174 with the following transitions: [2018-11-07 20:56:09,549 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [655], [657], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:56:09,610 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:56:09,610 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:56:10,391 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:56:10,393 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:56:10,395 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:56:10,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:10,443 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:56:11,085 INFO L227 lantSequenceWeakener]: Weakened 157 states. On average, predicates are now at 79% of their original sizes. [2018-11-07 20:56:11,086 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:56:12,048 INFO L415 sIntCurrentIteration]: We unified 172 AI predicates to 172 [2018-11-07 20:56:12,048 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:56:12,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:56:12,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-11-07 20:56:12,050 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:12,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:56:12,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:56:12,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:56:12,051 INFO L87 Difference]: Start difference. First operand 1441 states and 2402 transitions. Second operand 10 states. [2018-11-07 20:56:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:37,883 INFO L93 Difference]: Finished difference Result 3219 states and 5304 transitions. [2018-11-07 20:56:37,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 20:56:37,883 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 173 [2018-11-07 20:56:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:37,894 INFO L225 Difference]: With dead ends: 3219 [2018-11-07 20:56:37,894 INFO L226 Difference]: Without dead ends: 1784 [2018-11-07 20:56:37,900 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 176 GetRequests, 155 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 20:56:37,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2018-11-07 20:56:37,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1779. [2018-11-07 20:56:37,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2018-11-07 20:56:37,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2747 transitions. [2018-11-07 20:56:37,957 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2747 transitions. Word has length 173 [2018-11-07 20:56:37,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:37,958 INFO L480 AbstractCegarLoop]: Abstraction has 1779 states and 2747 transitions. [2018-11-07 20:56:37,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:56:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2747 transitions. [2018-11-07 20:56:37,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-11-07 20:56:37,964 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:37,964 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:56:37,964 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:37,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:37,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1632227467, now seen corresponding path program 1 times [2018-11-07 20:56:37,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:37,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:37,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:37,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:37,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:38,361 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 197 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:56:38,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:56:38,361 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:56:38,361 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-11-07 20:56:38,362 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [655], [657], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:56:38,367 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:56:38,368 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:56:38,425 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:56:38,615 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:56:38,615 INFO L272 AbstractInterpreter]: Visited 109 different actions 314 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:56:38,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:38,620 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:56:39,150 INFO L227 lantSequenceWeakener]: Weakened 45 states. On average, predicates are now at 77.88% of their original sizes. [2018-11-07 20:56:39,150 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:56:40,146 INFO L415 sIntCurrentIteration]: We unified 264 AI predicates to 264 [2018-11-07 20:56:40,146 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:56:40,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:56:40,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-11-07 20:56:40,147 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:40,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 20:56:40,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 20:56:40,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-11-07 20:56:40,149 INFO L87 Difference]: Start difference. First operand 1779 states and 2747 transitions. Second operand 16 states. [2018-11-07 20:57:17,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:17,826 INFO L93 Difference]: Finished difference Result 4923 states and 7515 transitions. [2018-11-07 20:57:17,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 20:57:17,827 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 265 [2018-11-07 20:57:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:17,844 INFO L225 Difference]: With dead ends: 4923 [2018-11-07 20:57:17,844 INFO L226 Difference]: Without dead ends: 3488 [2018-11-07 20:57:17,850 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 273 GetRequests, 235 SyntacticMatches, 15 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2018-11-07 20:57:17,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2018-11-07 20:57:17,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2975. [2018-11-07 20:57:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2975 states. [2018-11-07 20:57:17,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 3991 transitions. [2018-11-07 20:57:17,925 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 3991 transitions. Word has length 265 [2018-11-07 20:57:17,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:17,926 INFO L480 AbstractCegarLoop]: Abstraction has 2975 states and 3991 transitions. [2018-11-07 20:57:17,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 20:57:17,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 3991 transitions. [2018-11-07 20:57:17,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-11-07 20:57:17,932 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:17,933 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:17,933 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:17,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:17,934 INFO L82 PathProgramCache]: Analyzing trace with hash 477021565, now seen corresponding path program 1 times [2018-11-07 20:57:17,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:17,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:17,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:17,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:17,935 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:18,228 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:57:18,360 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 131 proven. 6 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-11-07 20:57:18,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:57:18,360 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:57:18,361 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 302 with the following transitions: [2018-11-07 20:57:18,361 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [655], [657], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:57:18,365 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:57:18,365 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:57:18,428 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:57:18,814 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:57:18,815 INFO L272 AbstractInterpreter]: Visited 136 different actions 395 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:57:18,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:18,844 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:57:19,418 INFO L227 lantSequenceWeakener]: Weakened 45 states. On average, predicates are now at 77.88% of their original sizes. [2018-11-07 20:57:19,419 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:57:20,614 INFO L415 sIntCurrentIteration]: We unified 300 AI predicates to 300 [2018-11-07 20:57:20,614 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:57:20,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:57:20,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [8] total 22 [2018-11-07 20:57:20,615 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:20,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 20:57:20,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 20:57:20,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-11-07 20:57:20,618 INFO L87 Difference]: Start difference. First operand 2975 states and 3991 transitions. Second operand 16 states. [2018-11-07 20:57:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:55,442 INFO L93 Difference]: Finished difference Result 5835 states and 8467 transitions. [2018-11-07 20:57:55,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 20:57:55,443 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 301 [2018-11-07 20:57:55,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:55,463 INFO L225 Difference]: With dead ends: 5835 [2018-11-07 20:57:55,463 INFO L226 Difference]: Without dead ends: 4400 [2018-11-07 20:57:55,470 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 309 GetRequests, 271 SyntacticMatches, 15 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2018-11-07 20:57:55,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2018-11-07 20:57:55,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 3792. [2018-11-07 20:57:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3792 states. [2018-11-07 20:57:55,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 4846 transitions. [2018-11-07 20:57:55,573 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 4846 transitions. Word has length 301 [2018-11-07 20:57:55,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:55,573 INFO L480 AbstractCegarLoop]: Abstraction has 3792 states and 4846 transitions. [2018-11-07 20:57:55,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 20:57:55,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 4846 transitions. [2018-11-07 20:57:55,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-11-07 20:57:55,584 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:55,584 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:55,585 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:55,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:55,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2064932140, now seen corresponding path program 1 times [2018-11-07 20:57:55,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:55,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:55,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:55,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:55,587 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:58:01,498 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:58:01,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:58:01,499 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:58:01,499 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 327 with the following transitions: [2018-11-07 20:58:01,499 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [655], [657], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1004], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:58:01,503 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:58:01,504 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:58:01,583 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:58:01,931 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:58:01,932 INFO L272 AbstractInterpreter]: Visited 161 different actions 470 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:58:01,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:01,936 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:58:02,395 INFO L227 lantSequenceWeakener]: Weakened 45 states. On average, predicates are now at 77.88% of their original sizes. [2018-11-07 20:58:02,395 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:58:02,737 INFO L415 sIntCurrentIteration]: We unified 325 AI predicates to 325 [2018-11-07 20:58:02,737 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:58:02,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:58:02,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [13] total 28 [2018-11-07 20:58:02,738 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:58:02,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 20:58:02,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 20:58:02,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:58:02,739 INFO L87 Difference]: Start difference. First operand 3792 states and 4846 transitions. Second operand 17 states. [2018-11-07 20:58:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:58:43,444 INFO L93 Difference]: Finished difference Result 6654 states and 9322 transitions. [2018-11-07 20:58:43,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 20:58:43,444 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 326 [2018-11-07 20:58:43,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:58:43,468 INFO L225 Difference]: With dead ends: 6654 [2018-11-07 20:58:43,468 INFO L226 Difference]: Without dead ends: 5219 [2018-11-07 20:58:43,476 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 334 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2018-11-07 20:58:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2018-11-07 20:58:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 4611. [2018-11-07 20:58:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4611 states. [2018-11-07 20:58:43,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4611 states to 4611 states and 5701 transitions. [2018-11-07 20:58:43,613 INFO L78 Accepts]: Start accepts. Automaton has 4611 states and 5701 transitions. Word has length 326 [2018-11-07 20:58:43,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:58:43,613 INFO L480 AbstractCegarLoop]: Abstraction has 4611 states and 5701 transitions. [2018-11-07 20:58:43,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 20:58:43,614 INFO L276 IsEmpty]: Start isEmpty. Operand 4611 states and 5701 transitions. [2018-11-07 20:58:43,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-11-07 20:58:43,625 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:58:43,625 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:43,626 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:58:43,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:43,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1529939876, now seen corresponding path program 1 times [2018-11-07 20:58:43,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:58:43,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:43,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:58:43,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:43,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:58:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:58:44,029 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 20:58:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 206 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:58:44,667 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:58:44,668 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:58:44,668 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-11-07 20:58:44,668 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [655], [657], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1164], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:58:44,674 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:58:44,674 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:58:44,798 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:58:45,877 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:58:45,878 INFO L272 AbstractInterpreter]: Visited 201 different actions 590 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:58:45,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:45,894 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:58:46,350 INFO L227 lantSequenceWeakener]: Weakened 98 states. On average, predicates are now at 78.25% of their original sizes. [2018-11-07 20:58:46,351 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:58:46,987 INFO L415 sIntCurrentIteration]: We unified 365 AI predicates to 365 [2018-11-07 20:58:46,988 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:58:46,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:58:46,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [7] total 29 [2018-11-07 20:58:46,988 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:58:46,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 20:58:46,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 20:58:46,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2018-11-07 20:58:46,989 INFO L87 Difference]: Start difference. First operand 4611 states and 5701 transitions. Second operand 24 states. Received shutdown request... [2018-11-07 20:59:34,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 20:59:34,069 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:59:34,081 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:59:34,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:59:34 BoogieIcfgContainer [2018-11-07 20:59:34,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:59:34,082 INFO L168 Benchmark]: Toolchain (without parser) took 223704.90 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 20:59:34,084 INFO L168 Benchmark]: CDTParser took 0.22 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 20:59:34,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1189.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:59:34,085 INFO L168 Benchmark]: Boogie Procedure Inliner took 196.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -863.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:59:34,086 INFO L168 Benchmark]: Boogie Preprocessor took 166.07 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:59:34,087 INFO L168 Benchmark]: RCFGBuilder took 6300.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 253.8 MB). Peak memory consumption was 253.8 MB. Max. memory is 7.1 GB. [2018-11-07 20:59:34,089 INFO L168 Benchmark]: TraceAbstraction took 215846.01 ms. Allocated memory was 2.3 GB in the beginning and 5.1 GB in the end (delta: 2.8 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -622.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 20:59:34,098 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1189.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 196.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -863.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.07 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6300.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 253.8 MB). Peak memory consumption was 253.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215846.01 ms. Allocated memory was 2.3 GB in the beginning and 5.1 GB in the end (delta: 2.8 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -622.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 202]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 202). Cancelled while BasicCegarLoop was constructing difference of abstraction (4611states) and FLOYD_HOARE automaton (currently 25 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (7193 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 215.7s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 195.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2187 SDtfs, 27983 SDslu, 1141 SDs, 0 SdLazy, 31254 SolverSat, 4011 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.6s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 1486 GetRequests, 1318 SyntacticMatches, 42 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4611occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.3s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9976869102196873 AbsIntWeakeningRatio, 0.08695652173913043 AbsIntAvgWeakeningVarsNumRemoved, 7.5673211781206176 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 1744 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1647 NumberOfCodeBlocks, 1647 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1640 ConstructedInterpolants, 0 QuantifiedInterpolants, 2608925 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 926/1045 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown