java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:42:12,298 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:42:12,300 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:42:12,314 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:42:12,314 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:42:12,316 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:42:12,317 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:42:12,321 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:42:12,323 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:42:12,324 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:42:12,325 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:42:12,325 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:42:12,326 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:42:12,327 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:42:12,337 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:42:12,338 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:42:12,342 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:42:12,345 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:42:12,349 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:42:12,353 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:42:12,354 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:42:12,356 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:42:12,359 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:42:12,359 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:42:12,359 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:42:12,360 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:42:12,363 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:42:12,364 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:42:12,364 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:42:12,365 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:42:12,366 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:42:12,368 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:42:12,369 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:42:12,370 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:42:12,371 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:42:12,372 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:42:12,373 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 20:42:12,403 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:42:12,404 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:42:12,405 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:42:12,405 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:42:12,405 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:42:12,405 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:42:12,405 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:42:12,407 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:42:12,407 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:42:12,407 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:42:12,407 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:42:12,407 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:42:12,408 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:42:12,409 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:42:12,409 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:42:12,409 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:42:12,409 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:42:12,409 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:42:12,409 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:42:12,410 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:42:12,410 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:42:12,410 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:42:12,410 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:42:12,410 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:42:12,412 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:42:12,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:42:12,413 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:42:12,413 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:42:12,413 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:42:12,415 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:42:12,415 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:42:12,415 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:42:12,415 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:42:12,415 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:42:12,416 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:42:12,488 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:42:12,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:42:12,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:42:12,504 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:42:12,504 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:42:12,505 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c [2018-11-07 20:42:12,571 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95aca3aa4/08ced963d6894894b64c59c9b93753c0/FLAGc292edf2e [2018-11-07 20:42:13,186 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:42:13,187 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c [2018-11-07 20:42:13,205 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95aca3aa4/08ced963d6894894b64c59c9b93753c0/FLAGc292edf2e [2018-11-07 20:42:13,220 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95aca3aa4/08ced963d6894894b64c59c9b93753c0 [2018-11-07 20:42:13,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:42:13,233 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:42:13,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:42:13,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:42:13,238 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:42:13,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:13" (1/1) ... [2018-11-07 20:42:13,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86a71ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:13, skipping insertion in model container [2018-11-07 20:42:13,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:13" (1/1) ... [2018-11-07 20:42:13,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:42:13,339 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:42:14,183 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:42:14,189 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:42:14,494 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:42:14,515 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:42:14,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:14 WrapperNode [2018-11-07 20:42:14,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:42:14,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:42:14,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:42:14,518 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:42:14,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:14" (1/1) ... [2018-11-07 20:42:14,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:14" (1/1) ... [2018-11-07 20:42:14,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:42:14,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:42:14,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:42:14,749 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:42:14,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:14" (1/1) ... [2018-11-07 20:42:14,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:14" (1/1) ... [2018-11-07 20:42:14,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:14" (1/1) ... [2018-11-07 20:42:14,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:14" (1/1) ... [2018-11-07 20:42:14,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:14" (1/1) ... [2018-11-07 20:42:14,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:14" (1/1) ... [2018-11-07 20:42:14,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:14" (1/1) ... [2018-11-07 20:42:14,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:42:14,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:42:14,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:42:14,959 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:42:14,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:14" (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 20:42:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:42:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:42:15,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:42:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:42:15,033 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:42:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:42:15,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:42:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:42:15,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:42:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:42:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:42:21,926 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:42:21,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:21 BoogieIcfgContainer [2018-11-07 20:42:21,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:42:21,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:42:21,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:42:21,932 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:42:21,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:42:13" (1/3) ... [2018-11-07 20:42:21,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281a03a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:21, skipping insertion in model container [2018-11-07 20:42:21,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:14" (2/3) ... [2018-11-07 20:42:21,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281a03a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:21, skipping insertion in model container [2018-11-07 20:42:21,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:21" (3/3) ... [2018-11-07 20:42:21,936 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label16_true-unreach-call.c [2018-11-07 20:42:21,946 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:42:21,958 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:42:21,973 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:42:22,023 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:42:22,024 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:42:22,024 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:42:22,024 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:42:22,024 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:42:22,025 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:42:22,026 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:42:22,026 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:42:22,063 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 20:42:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-07 20:42:22,074 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:42:22,076 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] [2018-11-07 20:42:22,078 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:42:22,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:42:22,085 INFO L82 PathProgramCache]: Analyzing trace with hash 539142097, now seen corresponding path program 1 times [2018-11-07 20:42:22,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:42:22,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:22,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:42:22,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:22,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:42:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:42:22,574 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:42:22,700 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 20:42:22,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:42:22,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:42:22,704 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:42:22,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:42:22,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:42:22,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:42:22,731 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-07 20:42:26,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:42:26,860 INFO L93 Difference]: Finished difference Result 1193 states and 2149 transitions. [2018-11-07 20:42:26,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:42:26,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-11-07 20:42:26,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:42:26,889 INFO L225 Difference]: With dead ends: 1193 [2018-11-07 20:42:26,890 INFO L226 Difference]: Without dead ends: 753 [2018-11-07 20:42:26,899 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 20:42:26,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2018-11-07 20:42:27,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2018-11-07 20:42:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2018-11-07 20:42:27,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1315 transitions. [2018-11-07 20:42:27,047 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1315 transitions. Word has length 69 [2018-11-07 20:42:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:42:27,048 INFO L480 AbstractCegarLoop]: Abstraction has 753 states and 1315 transitions. [2018-11-07 20:42:27,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:42:27,048 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1315 transitions. [2018-11-07 20:42:27,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 20:42:27,059 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:42:27,059 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, 1, 1, 1, 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 20:42:27,059 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:42:27,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:42:27,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1189160704, now seen corresponding path program 1 times [2018-11-07 20:42:27,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:42:27,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:27,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:42:27,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:27,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:42:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:42:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:42:27,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:42:27,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:42:27,505 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:42:27,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:42:27,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:42:27,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:42:27,508 INFO L87 Difference]: Start difference. First operand 753 states and 1315 transitions. Second operand 5 states. [2018-11-07 20:42:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:42:36,339 INFO L93 Difference]: Finished difference Result 2820 states and 5075 transitions. [2018-11-07 20:42:36,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:42:36,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-11-07 20:42:36,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:42:36,354 INFO L225 Difference]: With dead ends: 2820 [2018-11-07 20:42:36,355 INFO L226 Difference]: Without dead ends: 2073 [2018-11-07 20:42:36,362 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:42:36,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2018-11-07 20:42:36,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2045. [2018-11-07 20:42:36,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2045 states. [2018-11-07 20:42:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 3207 transitions. [2018-11-07 20:42:36,447 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 3207 transitions. Word has length 149 [2018-11-07 20:42:36,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:42:36,447 INFO L480 AbstractCegarLoop]: Abstraction has 2045 states and 3207 transitions. [2018-11-07 20:42:36,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:42:36,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 3207 transitions. [2018-11-07 20:42:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 20:42:36,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:42:36,455 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, 1, 1, 1, 1, 1, 1, 1, 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 20:42:36,456 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:42:36,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:42:36,456 INFO L82 PathProgramCache]: Analyzing trace with hash -719504888, now seen corresponding path program 1 times [2018-11-07 20:42:36,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:42:36,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:36,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:42:36,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:36,458 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:42:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:42:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:42:36,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:42:36,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:42:36,717 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:42:36,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:42:36,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:42:36,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:42:36,718 INFO L87 Difference]: Start difference. First operand 2045 states and 3207 transitions. Second operand 6 states. [2018-11-07 20:42:43,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:42:43,478 INFO L93 Difference]: Finished difference Result 6269 states and 10277 transitions. [2018-11-07 20:42:43,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 20:42:43,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-11-07 20:42:43,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:42:43,505 INFO L225 Difference]: With dead ends: 6269 [2018-11-07 20:42:43,506 INFO L226 Difference]: Without dead ends: 4230 [2018-11-07 20:42:43,523 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:42:43,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2018-11-07 20:42:43,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 4171. [2018-11-07 20:42:43,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4171 states. [2018-11-07 20:42:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4171 states to 4171 states and 6114 transitions. [2018-11-07 20:42:43,644 INFO L78 Accepts]: Start accepts. Automaton has 4171 states and 6114 transitions. Word has length 153 [2018-11-07 20:42:43,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:42:43,645 INFO L480 AbstractCegarLoop]: Abstraction has 4171 states and 6114 transitions. [2018-11-07 20:42:43,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:42:43,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4171 states and 6114 transitions. [2018-11-07 20:42:43,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-07 20:42:43,652 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:42:43,653 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, 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] [2018-11-07 20:42:43,653 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:42:43,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:42:43,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1335578740, now seen corresponding path program 1 times [2018-11-07 20:42:43,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:42:43,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:43,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:42:43,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:43,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:42:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:42:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 127 proven. 61 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 20:42:43,914 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:42:43,915 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:42:43,916 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-11-07 20:42:43,918 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:42:43,964 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:42:43,964 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:42:44,454 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:42:44,457 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:42:44,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:42:44,518 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:42:45,127 INFO L227 lantSequenceWeakener]: Weakened 210 states. On average, predicates are now at 78.36% of their original sizes. [2018-11-07 20:42:45,127 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:42:45,393 INFO L415 sIntCurrentIteration]: We unified 218 AI predicates to 218 [2018-11-07 20:42:45,393 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:42:45,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:42:45,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 20:42:45,395 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:42:45,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 20:42:45,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 20:42:45,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:42:45,396 INFO L87 Difference]: Start difference. First operand 4171 states and 6114 transitions. Second operand 7 states. [2018-11-07 20:42:47,420 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:43:09,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:43:09,419 INFO L93 Difference]: Finished difference Result 8646 states and 12576 transitions. [2018-11-07 20:43:09,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:43:09,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2018-11-07 20:43:09,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:43:09,440 INFO L225 Difference]: With dead ends: 8646 [2018-11-07 20:43:09,440 INFO L226 Difference]: Without dead ends: 4481 [2018-11-07 20:43:09,451 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 219 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:43:09,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2018-11-07 20:43:09,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 4479. [2018-11-07 20:43:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4479 states. [2018-11-07 20:43:09,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 6430 transitions. [2018-11-07 20:43:09,559 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 6430 transitions. Word has length 219 [2018-11-07 20:43:09,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:43:09,559 INFO L480 AbstractCegarLoop]: Abstraction has 4479 states and 6430 transitions. [2018-11-07 20:43:09,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 20:43:09,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 6430 transitions. [2018-11-07 20:43:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-11-07 20:43:09,567 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:43:09,567 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, 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] [2018-11-07 20:43:09,567 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:43:09,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:43:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash -378898114, now seen corresponding path program 1 times [2018-11-07 20:43:09,568 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:43:09,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:43:09,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:43:09,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:43:09,569 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:43:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:43:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 125 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 20:43:09,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:43:09,951 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:43:09,951 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-11-07 20:43:09,952 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:43:09,957 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:43:09,958 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:43:10,048 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:43:10,642 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:43:10,642 INFO L272 AbstractInterpreter]: Visited 104 different actions 692 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:43:10,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:43:10,679 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:43:11,284 INFO L227 lantSequenceWeakener]: Weakened 35 states. On average, predicates are now at 78.31% of their original sizes. [2018-11-07 20:43:11,284 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:43:14,385 INFO L415 sIntCurrentIteration]: We unified 248 AI predicates to 248 [2018-11-07 20:43:14,386 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:43:14,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:43:14,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-07 20:43:14,387 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:43:14,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 20:43:14,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 20:43:14,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-11-07 20:43:14,389 INFO L87 Difference]: Start difference. First operand 4479 states and 6430 transitions. Second operand 15 states. [2018-11-07 20:43:42,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:43:42,081 INFO L93 Difference]: Finished difference Result 10662 states and 15284 transitions. [2018-11-07 20:43:42,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 20:43:42,081 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 249 [2018-11-07 20:43:42,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:43:42,108 INFO L225 Difference]: With dead ends: 10662 [2018-11-07 20:43:42,109 INFO L226 Difference]: Without dead ends: 6497 [2018-11-07 20:43:42,121 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 254 GetRequests, 143 SyntacticMatches, 92 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:43:42,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6497 states. [2018-11-07 20:43:42,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6497 to 5944. [2018-11-07 20:43:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5944 states. [2018-11-07 20:43:42,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 7943 transitions. [2018-11-07 20:43:42,252 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 7943 transitions. Word has length 249 [2018-11-07 20:43:42,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:43:42,253 INFO L480 AbstractCegarLoop]: Abstraction has 5944 states and 7943 transitions. [2018-11-07 20:43:42,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 20:43:42,253 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 7943 transitions. [2018-11-07 20:43:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-11-07 20:43:42,269 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:43:42,269 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:43:42,270 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:43:42,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:43:42,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1515771385, now seen corresponding path program 1 times [2018-11-07 20:43:42,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:43:42,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:43:42,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:43:42,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:43:42,272 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:43:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:43:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-11-07 20:43:42,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:43:42,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:43:42,933 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:43:42,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:43:42,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:43:42,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:43:42,935 INFO L87 Difference]: Start difference. First operand 5944 states and 7943 transitions. Second operand 5 states. [2018-11-07 20:43:47,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:43:47,497 INFO L93 Difference]: Finished difference Result 14232 states and 20324 transitions. [2018-11-07 20:43:47,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 20:43:47,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 494 [2018-11-07 20:43:47,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:43:47,543 INFO L225 Difference]: With dead ends: 14232 [2018-11-07 20:43:47,544 INFO L226 Difference]: Without dead ends: 10067 [2018-11-07 20:43:47,559 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:43:47,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10067 states. [2018-11-07 20:43:47,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10067 to 9478. [2018-11-07 20:43:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9478 states. [2018-11-07 20:43:47,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9478 states to 9478 states and 12200 transitions. [2018-11-07 20:43:47,786 INFO L78 Accepts]: Start accepts. Automaton has 9478 states and 12200 transitions. Word has length 494 [2018-11-07 20:43:47,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:43:47,788 INFO L480 AbstractCegarLoop]: Abstraction has 9478 states and 12200 transitions. [2018-11-07 20:43:47,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:43:47,788 INFO L276 IsEmpty]: Start isEmpty. Operand 9478 states and 12200 transitions. [2018-11-07 20:43:47,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2018-11-07 20:43:47,811 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:43:47,812 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:43:47,812 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:43:47,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:43:47,813 INFO L82 PathProgramCache]: Analyzing trace with hash -439647224, now seen corresponding path program 1 times [2018-11-07 20:43:47,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:43:47,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:43:47,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:43:47,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:43:47,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:43:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:43:48,380 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:43:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 266 proven. 86 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-11-07 20:43:48,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:43:48,761 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:43:48,761 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 506 with the following transitions: [2018-11-07 20:43:48,762 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:43:48,771 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:43:48,771 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:43:48,908 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:43:49,133 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:43:49,133 INFO L272 AbstractInterpreter]: Visited 284 different actions 562 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:43:49,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:43:49,142 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:43:49,890 INFO L227 lantSequenceWeakener]: Weakened 55 states. On average, predicates are now at 76.88% of their original sizes. [2018-11-07 20:43:49,891 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:43:50,153 INFO L415 sIntCurrentIteration]: We unified 504 AI predicates to 504 [2018-11-07 20:43:50,153 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:43:50,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:43:50,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [8] total 20 [2018-11-07 20:43:50,154 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:43:50,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 20:43:50,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 20:43:50,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-11-07 20:43:50,156 INFO L87 Difference]: Start difference. First operand 9478 states and 12200 transitions. Second operand 14 states. [2018-11-07 20:44:15,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:44:15,108 INFO L93 Difference]: Finished difference Result 17786 states and 23299 transitions. [2018-11-07 20:44:15,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 20:44:15,108 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 505 [2018-11-07 20:44:15,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:44:15,139 INFO L225 Difference]: With dead ends: 17786 [2018-11-07 20:44:15,139 INFO L226 Difference]: Without dead ends: 10087 [2018-11-07 20:44:15,161 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 512 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2018-11-07 20:44:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10087 states. [2018-11-07 20:44:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10087 to 10083. [2018-11-07 20:44:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10083 states. [2018-11-07 20:44:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10083 states to 10083 states and 12855 transitions. [2018-11-07 20:44:15,379 INFO L78 Accepts]: Start accepts. Automaton has 10083 states and 12855 transitions. Word has length 505 [2018-11-07 20:44:15,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:44:15,380 INFO L480 AbstractCegarLoop]: Abstraction has 10083 states and 12855 transitions. [2018-11-07 20:44:15,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-07 20:44:15,380 INFO L276 IsEmpty]: Start isEmpty. Operand 10083 states and 12855 transitions. [2018-11-07 20:44:15,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-11-07 20:44:15,404 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:44:15,404 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:44:15,405 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:44:15,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:44:15,405 INFO L82 PathProgramCache]: Analyzing trace with hash -910945456, now seen corresponding path program 1 times [2018-11-07 20:44:15,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:44:15,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:44:15,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:44:15,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:44:15,407 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:44:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:44:15,874 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:44:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 266 proven. 117 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-11-07 20:44:21,679 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:44:21,679 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:44:21,679 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 537 with the following transitions: [2018-11-07 20:44:21,679 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:44:21,685 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:44:21,686 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:44:21,884 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:44:23,044 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:44:23,044 INFO L272 AbstractInterpreter]: Visited 284 different actions 1692 times. Merged at 8 different actions 43 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 20:44:23,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:44:23,051 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:44:23,473 INFO L227 lantSequenceWeakener]: Weakened 533 states. On average, predicates are now at 80.47% of their original sizes. [2018-11-07 20:44:23,474 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:44:23,656 INFO L415 sIntCurrentIteration]: We unified 535 AI predicates to 535 [2018-11-07 20:44:23,656 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:44:23,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:44:23,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-11-07 20:44:23,657 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:44:23,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:44:23,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:44:23,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:44:23,658 INFO L87 Difference]: Start difference. First operand 10083 states and 12855 transitions. Second operand 11 states. [2018-11-07 20:44:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:44:41,171 INFO L93 Difference]: Finished difference Result 24322 states and 32439 transitions. [2018-11-07 20:44:41,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 20:44:41,171 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 536 [2018-11-07 20:44:41,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:44:41,221 INFO L225 Difference]: With dead ends: 24322 [2018-11-07 20:44:41,221 INFO L226 Difference]: Without dead ends: 16623 [2018-11-07 20:44:41,251 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 546 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2018-11-07 20:44:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16623 states. [2018-11-07 20:44:41,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16623 to 16564. [2018-11-07 20:44:41,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16564 states. [2018-11-07 20:44:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16564 states to 16564 states and 21327 transitions. [2018-11-07 20:44:41,590 INFO L78 Accepts]: Start accepts. Automaton has 16564 states and 21327 transitions. Word has length 536 [2018-11-07 20:44:41,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:44:41,591 INFO L480 AbstractCegarLoop]: Abstraction has 16564 states and 21327 transitions. [2018-11-07 20:44:41,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:44:41,591 INFO L276 IsEmpty]: Start isEmpty. Operand 16564 states and 21327 transitions. [2018-11-07 20:44:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2018-11-07 20:44:41,627 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:44:41,628 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:44:41,628 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:44:41,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:44:41,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1923022336, now seen corresponding path program 1 times [2018-11-07 20:44:41,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:44:41,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:44:41,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:44:41,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:44:41,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:44:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:44:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 353 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 20:44:43,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:44:43,387 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:44:43,388 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 540 with the following transitions: [2018-11-07 20:44:43,388 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:44:43,393 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:44:43,393 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:44:43,596 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:44:45,458 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:44:45,458 INFO L272 AbstractInterpreter]: Visited 285 different actions 1703 times. Merged at 8 different actions 51 times. Widened at 1 different actions 2 times. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 20:44:45,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:44:45,467 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:44:45,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:44:45,467 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:44:45,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:44:45,477 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:44:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:44:45,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:44:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 353 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 20:44:47,155 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:44:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 353 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 20:44:47,628 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:44:47,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 20:44:47,628 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:44:47,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 20:44:47,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 20:44:47,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:44:47,633 INFO L87 Difference]: Start difference. First operand 16564 states and 21327 transitions. Second operand 9 states. [2018-11-07 20:44:59,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:44:59,150 INFO L93 Difference]: Finished difference Result 51756 states and 72537 transitions. [2018-11-07 20:44:59,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 20:44:59,151 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 539 [2018-11-07 20:44:59,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:44:59,380 INFO L225 Difference]: With dead ends: 51756 [2018-11-07 20:44:59,380 INFO L226 Difference]: Without dead ends: 37576 [2018-11-07 20:44:59,534 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1107 GetRequests, 1085 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2018-11-07 20:44:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37576 states. [2018-11-07 20:45:00,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37576 to 37347. [2018-11-07 20:45:00,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37347 states. [2018-11-07 20:45:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37347 states to 37347 states and 46291 transitions. [2018-11-07 20:45:00,797 INFO L78 Accepts]: Start accepts. Automaton has 37347 states and 46291 transitions. Word has length 539 [2018-11-07 20:45:00,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:45:00,798 INFO L480 AbstractCegarLoop]: Abstraction has 37347 states and 46291 transitions. [2018-11-07 20:45:00,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 20:45:00,798 INFO L276 IsEmpty]: Start isEmpty. Operand 37347 states and 46291 transitions. [2018-11-07 20:45:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-11-07 20:45:00,850 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:45:00,850 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:45:00,851 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:45:00,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:00,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1593692243, now seen corresponding path program 1 times [2018-11-07 20:45:00,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:45:00,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:00,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:45:00,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:00,853 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:45:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:45:01,681 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:45:02,754 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 257 proven. 232 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 20:45:02,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:45:02,755 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:45:02,755 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 584 with the following transitions: [2018-11-07 20:45:02,756 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1060], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:45:02,760 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:45:02,760 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:45:03,015 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:45:03,710 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:45:03,711 INFO L272 AbstractInterpreter]: Visited 284 different actions 851 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 20:45:03,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:03,717 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:45:04,279 INFO L227 lantSequenceWeakener]: Weakened 580 states. On average, predicates are now at 80.43% of their original sizes. [2018-11-07 20:45:04,279 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:45:04,385 INFO L415 sIntCurrentIteration]: We unified 582 AI predicates to 582 [2018-11-07 20:45:04,385 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:45:04,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:45:04,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2018-11-07 20:45:04,386 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:45:04,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:45:04,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:45:04,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:45:04,387 INFO L87 Difference]: Start difference. First operand 37347 states and 46291 transitions. Second operand 10 states. [2018-11-07 20:45:31,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:45:31,045 INFO L93 Difference]: Finished difference Result 66822 states and 83812 transitions. [2018-11-07 20:45:31,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 20:45:31,045 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 583 [2018-11-07 20:45:31,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:45:31,221 INFO L225 Difference]: With dead ends: 66822 [2018-11-07 20:45:31,221 INFO L226 Difference]: Without dead ends: 40089 [2018-11-07 20:45:31,316 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 589 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:45:31,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40089 states. [2018-11-07 20:45:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40089 to 39523. [2018-11-07 20:45:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39523 states. [2018-11-07 20:45:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39523 states to 39523 states and 48659 transitions. [2018-11-07 20:45:32,137 INFO L78 Accepts]: Start accepts. Automaton has 39523 states and 48659 transitions. Word has length 583 [2018-11-07 20:45:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:45:32,138 INFO L480 AbstractCegarLoop]: Abstraction has 39523 states and 48659 transitions. [2018-11-07 20:45:32,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:45:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 39523 states and 48659 transitions. [2018-11-07 20:45:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2018-11-07 20:45:32,194 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:45:32,195 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:45:32,195 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:45:32,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:32,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1242767860, now seen corresponding path program 1 times [2018-11-07 20:45:32,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:45:32,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:32,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:45:32,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:32,197 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:45:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:45:32,905 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 488 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-07 20:45:32,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:45:32,906 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:45:32,906 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 610 with the following transitions: [2018-11-07 20:45:32,907 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:45:32,912 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:45:32,912 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:45:33,285 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 20:45:40,903 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 20:45:40,904 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 20:45:40,904 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 20:45:40,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:45:40,904 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:45:40,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:45:40,916 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:45:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:45:41,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:45:41,148 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 20:45:41,349 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:45:41,349 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:45:41,353 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:45:41,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:45:41 BoogieIcfgContainer [2018-11-07 20:45:41,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:45:41,354 INFO L168 Benchmark]: Toolchain (without parser) took 208122.02 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 4.5 GB in the end (delta: -3.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 20:45:41,355 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 20:45:41,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1282.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-07 20:45:41,356 INFO L168 Benchmark]: Boogie Procedure Inliner took 231.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -903.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 20:45:41,359 INFO L168 Benchmark]: Boogie Preprocessor took 209.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:45:41,361 INFO L168 Benchmark]: RCFGBuilder took 6968.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 307.1 MB). Peak memory consumption was 307.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:45:41,362 INFO L168 Benchmark]: TraceAbstraction took 199425.14 ms. Allocated memory was 2.3 GB in the beginning and 5.8 GB in the end (delta: 3.6 GB). Free memory was 1.9 GB in the beginning and 4.5 GB in the end (delta: -2.6 GB). Peak memory consumption was 937.7 MB. Max. memory is 7.1 GB. [2018-11-07 20:45:41,367 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 1282.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 231.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -903.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 209.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6968.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 307.1 MB). Peak memory consumption was 307.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199425.14 ms. Allocated memory was 2.3 GB in the beginning and 5.8 GB in the end (delta: 3.6 GB). Free memory was 1.9 GB in the beginning and 4.5 GB in the end (delta: -2.6 GB). Peak memory consumption was 937.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 193]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 193). Cancelled while BasicCegarLoop was analyzing trace of length 610 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 199.3s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 157.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3017 SDtfs, 18621 SDslu, 3219 SDs, 0 SdLazy, 29708 SolverSat, 4231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.2s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 3264 GetRequests, 3048 SyntacticMatches, 97 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39523occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.1s AbstIntTime, 7 AbstIntIterations, 5 AbstIntStrong, 0.9978577756048408 AbsIntWeakeningRatio, 0.07091518926689028 AbsIntAvgWeakeningVarsNumRemoved, 17.772400574988023 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 2089 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 4035 NumberOfCodeBlocks, 4035 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4562 ConstructedInterpolants, 0 QuantifiedInterpolants, 7994554 SizeOfPredicates, 0 NumberOfNonLiveVariables, 763 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 3125/3704 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown