java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label08_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:09:31,422 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:09:31,424 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:09:31,436 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:09:31,437 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:09:31,438 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:09:31,439 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:09:31,441 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:09:31,443 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:09:31,443 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:09:31,444 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:09:31,445 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:09:31,446 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:09:31,447 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:09:31,448 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:09:31,449 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:09:31,449 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:09:31,453 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:09:31,457 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:09:31,463 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:09:31,467 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:09:31,469 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:09:31,471 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:09:31,471 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:09:31,472 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:09:31,478 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:09:31,479 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:09:31,479 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:09:31,480 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:09:31,481 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:09:31,482 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:09:31,482 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:09:31,482 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:09:31,483 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:09:31,484 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:09:31,484 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:09:31,485 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:09:31,500 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:09:31,501 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:09:31,502 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:09:31,502 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:09:31,502 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:09:31,502 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:09:31,503 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:09:31,503 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:09:31,503 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:09:31,503 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:09:31,503 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:09:31,504 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:09:31,504 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:09:31,505 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:09:31,505 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:09:31,505 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:09:31,505 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:09:31,505 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:09:31,505 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:09:31,506 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:09:31,506 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:09:31,506 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:09:31,506 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:09:31,507 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:09:31,507 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:09:31,507 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:09:31,507 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:09:31,507 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:09:31,508 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:09:31,508 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:09:31,508 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:09:31,508 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:09:31,508 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:09:31,509 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:09:31,559 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:09:31,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:09:31,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:09:31,584 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:09:31,584 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:09:31,585 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label08_false-unreach-call.c [2018-10-24 18:09:31,659 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/191987a20/32d7ddbd3445450b982e53f46d25a0b2/FLAG9992e2ac6 [2018-10-24 18:09:32,391 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:09:32,392 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label08_false-unreach-call.c [2018-10-24 18:09:32,407 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/191987a20/32d7ddbd3445450b982e53f46d25a0b2/FLAG9992e2ac6 [2018-10-24 18:09:32,422 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/191987a20/32d7ddbd3445450b982e53f46d25a0b2 [2018-10-24 18:09:32,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:09:32,436 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:09:32,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:09:32,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:09:32,443 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:09:32,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:32" (1/1) ... [2018-10-24 18:09:32,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@252aa0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:32, skipping insertion in model container [2018-10-24 18:09:32,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:32" (1/1) ... [2018-10-24 18:09:32,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:09:32,542 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:09:33,210 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:09:33,217 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:09:33,381 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:09:33,400 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:09:33,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:33 WrapperNode [2018-10-24 18:09:33,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:09:33,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:09:33,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:09:33,403 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:09:33,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:33" (1/1) ... [2018-10-24 18:09:33,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:33" (1/1) ... [2018-10-24 18:09:33,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:09:33,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:09:33,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:09:33,678 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:09:33,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:33" (1/1) ... [2018-10-24 18:09:33,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:33" (1/1) ... [2018-10-24 18:09:33,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:33" (1/1) ... [2018-10-24 18:09:33,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:33" (1/1) ... [2018-10-24 18:09:33,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:33" (1/1) ... [2018-10-24 18:09:33,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:33" (1/1) ... [2018-10-24 18:09:33,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:33" (1/1) ... [2018-10-24 18:09:33,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:09:33,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:09:33,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:09:33,811 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:09:33,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 18:09:33,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:09:33,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:09:33,889 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:09:33,890 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:09:33,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:09:33,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:09:33,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:09:33,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:09:39,131 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:09:39,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:09:39 BoogieIcfgContainer [2018-10-24 18:09:39,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:09:39,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:09:39,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:09:39,138 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:09:39,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:09:32" (1/3) ... [2018-10-24 18:09:39,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18623293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:09:39, skipping insertion in model container [2018-10-24 18:09:39,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:33" (2/3) ... [2018-10-24 18:09:39,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18623293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:09:39, skipping insertion in model container [2018-10-24 18:09:39,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:09:39" (3/3) ... [2018-10-24 18:09:39,143 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label08_false-unreach-call.c [2018-10-24 18:09:39,151 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:09:39,159 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:09:39,178 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:09:39,218 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:09:39,218 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:09:39,219 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:09:39,219 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:09:39,219 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:09:39,219 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:09:39,219 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:09:39,220 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:09:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 18:09:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-24 18:09:39,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:39,258 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] [2018-10-24 18:09:39,260 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:39,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:39,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1486587100, now seen corresponding path program 1 times [2018-10-24 18:09:39,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:39,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:39,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:39,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:39,320 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:39,671 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:09:39,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:39,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:39,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:09:39,709 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:39,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:09:39,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:09:39,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:09:39,737 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-24 18:09:42,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:42,500 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-10-24 18:09:42,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:09:42,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-10-24 18:09:42,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:42,529 INFO L225 Difference]: With dead ends: 782 [2018-10-24 18:09:42,529 INFO L226 Difference]: Without dead ends: 487 [2018-10-24 18:09:42,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:09:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-10-24 18:09:42,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-10-24 18:09:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-24 18:09:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 837 transitions. [2018-10-24 18:09:42,630 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 837 transitions. Word has length 22 [2018-10-24 18:09:42,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:42,631 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 837 transitions. [2018-10-24 18:09:42,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:09:42,631 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 837 transitions. [2018-10-24 18:09:42,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-24 18:09:42,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:42,638 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:09:42,638 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:42,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:42,639 INFO L82 PathProgramCache]: Analyzing trace with hash 838371767, now seen corresponding path program 1 times [2018-10-24 18:09:42,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:42,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:42,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:42,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:42,641 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:43,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:43,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:43,020 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:43,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:43,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:43,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:43,023 INFO L87 Difference]: Start difference. First operand 482 states and 837 transitions. Second operand 6 states. [2018-10-24 18:09:49,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:49,551 INFO L93 Difference]: Finished difference Result 1804 states and 3389 transitions. [2018-10-24 18:09:49,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 18:09:49,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-24 18:09:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:49,568 INFO L225 Difference]: With dead ends: 1804 [2018-10-24 18:09:49,568 INFO L226 Difference]: Without dead ends: 1328 [2018-10-24 18:09:49,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:09:49,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2018-10-24 18:09:49,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1286. [2018-10-24 18:09:49,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1286 states. [2018-10-24 18:09:49,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1955 transitions. [2018-10-24 18:09:49,679 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1955 transitions. Word has length 93 [2018-10-24 18:09:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:49,680 INFO L481 AbstractCegarLoop]: Abstraction has 1286 states and 1955 transitions. [2018-10-24 18:09:49,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1955 transitions. [2018-10-24 18:09:49,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-24 18:09:49,683 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:49,683 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:09:49,684 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:49,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:49,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1072390589, now seen corresponding path program 1 times [2018-10-24 18:09:49,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:49,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:49,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:49,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:49,686 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:49,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:49,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:49,903 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:49,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:49,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:49,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:49,905 INFO L87 Difference]: Start difference. First operand 1286 states and 1955 transitions. Second operand 6 states. [2018-10-24 18:09:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:54,141 INFO L93 Difference]: Finished difference Result 4479 states and 7249 transitions. [2018-10-24 18:09:54,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:54,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-10-24 18:09:54,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:54,167 INFO L225 Difference]: With dead ends: 4479 [2018-10-24 18:09:54,167 INFO L226 Difference]: Without dead ends: 3199 [2018-10-24 18:09:54,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:09:54,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2018-10-24 18:09:54,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3160. [2018-10-24 18:09:54,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2018-10-24 18:09:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 4524 transitions. [2018-10-24 18:09:54,305 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 4524 transitions. Word has length 103 [2018-10-24 18:09:54,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:54,306 INFO L481 AbstractCegarLoop]: Abstraction has 3160 states and 4524 transitions. [2018-10-24 18:09:54,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:54,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 4524 transitions. [2018-10-24 18:09:54,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-24 18:09:54,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:54,315 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:09:54,315 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:54,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:54,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2038666381, now seen corresponding path program 1 times [2018-10-24 18:09:54,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:54,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:54,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:54,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:54,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:54,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:09:54,609 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:09:54,610 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 168 with the following transitions: [2018-10-24 18:09:54,612 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 18:09:54,680 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:09:54,680 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:09:56,508 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:09:57,216 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:09:57,218 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 18:09:57,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:57,262 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:09:59,956 INFO L232 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 73.15% of their original sizes. [2018-10-24 18:09:59,956 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:10:00,491 INFO L413 sIntCurrentIteration]: We have 166 unified AI predicates [2018-10-24 18:10:00,491 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:10:00,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:10:00,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 18:10:00,493 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:10:00,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:10:00,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:10:00,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:10:00,494 INFO L87 Difference]: Start difference. First operand 3160 states and 4524 transitions. Second operand 7 states. [2018-10-24 18:10:24,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:10:24,579 INFO L93 Difference]: Finished difference Result 6506 states and 9259 transitions. [2018-10-24 18:10:24,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:10:24,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2018-10-24 18:10:24,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:10:24,600 INFO L225 Difference]: With dead ends: 6506 [2018-10-24 18:10:24,600 INFO L226 Difference]: Without dead ends: 3352 [2018-10-24 18:10:24,617 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:10:24,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2018-10-24 18:10:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 3350. [2018-10-24 18:10:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3350 states. [2018-10-24 18:10:24,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 4723 transitions. [2018-10-24 18:10:24,716 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 4723 transitions. Word has length 167 [2018-10-24 18:10:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:10:24,716 INFO L481 AbstractCegarLoop]: Abstraction has 3350 states and 4723 transitions. [2018-10-24 18:10:24,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:10:24,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 4723 transitions. [2018-10-24 18:10:24,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-24 18:10:24,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:10:24,721 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:10:24,722 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:10:24,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:10:24,722 INFO L82 PathProgramCache]: Analyzing trace with hash 170993114, now seen corresponding path program 1 times [2018-10-24 18:10:24,722 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:10:24,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:24,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:10:24,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:24,724 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:10:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:10:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:10:25,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:10:25,167 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:10:25,168 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-10-24 18:10:25,168 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 18:10:25,179 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:10:25,179 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:10:26,597 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:11:07,770 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 18:11:07,770 INFO L272 AbstractInterpreter]: Visited 126 different actions 858 times. Merged at 7 different actions 44 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-24 18:11:07,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:11:07,779 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 18:11:07,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:11:07,780 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 18:11:07,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:11:07,790 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:11:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:11:07,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:11:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:11:08,304 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 18:11:08,601 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 18:11:08,759 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 18:11:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:11:09,392 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 18:11:09,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 18:11:09,392 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 18:11:09,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 18:11:09,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 18:11:09,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-24 18:11:09,395 INFO L87 Difference]: Start difference. First operand 3350 states and 4723 transitions. Second operand 9 states. [2018-10-24 18:11:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:11:17,268 INFO L93 Difference]: Finished difference Result 9605 states and 18146 transitions. [2018-10-24 18:11:17,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 18:11:17,269 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 220 [2018-10-24 18:11:17,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:11:17,374 INFO L225 Difference]: With dead ends: 9605 [2018-10-24 18:11:17,375 INFO L226 Difference]: Without dead ends: 6451 [2018-10-24 18:11:17,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2018-10-24 18:11:17,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2018-10-24 18:11:17,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 6129. [2018-10-24 18:11:17,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6129 states. [2018-10-24 18:11:17,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6129 states to 6129 states and 8780 transitions. [2018-10-24 18:11:17,806 INFO L78 Accepts]: Start accepts. Automaton has 6129 states and 8780 transitions. Word has length 220 [2018-10-24 18:11:17,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:11:17,807 INFO L481 AbstractCegarLoop]: Abstraction has 6129 states and 8780 transitions. [2018-10-24 18:11:17,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 18:11:17,808 INFO L276 IsEmpty]: Start isEmpty. Operand 6129 states and 8780 transitions. [2018-10-24 18:11:17,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-24 18:11:17,815 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:11:17,815 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:11:17,816 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:11:17,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:11:17,816 INFO L82 PathProgramCache]: Analyzing trace with hash 226627033, now seen corresponding path program 1 times [2018-10-24 18:11:17,817 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:11:17,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:11:17,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:11:17,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:11:17,818 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:11:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:11:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-24 18:11:18,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:11:18,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:11:18,251 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:11:18,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:11:18,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:11:18,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:11:18,252 INFO L87 Difference]: Start difference. First operand 6129 states and 8780 transitions. Second operand 4 states. [2018-10-24 18:11:21,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:11:21,586 INFO L93 Difference]: Finished difference Result 18487 states and 30026 transitions. [2018-10-24 18:11:21,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:11:21,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2018-10-24 18:11:21,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:11:21,695 INFO L225 Difference]: With dead ends: 18487 [2018-10-24 18:11:21,695 INFO L226 Difference]: Without dead ends: 12554 [2018-10-24 18:11:21,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:11:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12554 states. [2018-10-24 18:11:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12554 to 10015. [2018-10-24 18:11:22,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10015 states. [2018-10-24 18:11:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10015 states to 10015 states and 14831 transitions. [2018-10-24 18:11:22,185 INFO L78 Accepts]: Start accepts. Automaton has 10015 states and 14831 transitions. Word has length 241 [2018-10-24 18:11:22,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:11:22,186 INFO L481 AbstractCegarLoop]: Abstraction has 10015 states and 14831 transitions. [2018-10-24 18:11:22,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:11:22,186 INFO L276 IsEmpty]: Start isEmpty. Operand 10015 states and 14831 transitions. [2018-10-24 18:11:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-24 18:11:22,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:11:22,198 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:11:22,199 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:11:22,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:11:22,199 INFO L82 PathProgramCache]: Analyzing trace with hash -764405825, now seen corresponding path program 1 times [2018-10-24 18:11:22,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:11:22,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:11:22,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:11:22,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:11:22,200 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:11:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:11:22,431 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-24 18:11:22,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:11:22,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:11:22,432 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:11:22,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:11:22,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:11:22,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:11:22,435 INFO L87 Difference]: Start difference. First operand 10015 states and 14831 transitions. Second operand 3 states. [2018-10-24 18:11:24,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:11:24,669 INFO L93 Difference]: Finished difference Result 23857 states and 37396 transitions. [2018-10-24 18:11:24,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:11:24,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 262 [2018-10-24 18:11:24,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:11:24,780 INFO L225 Difference]: With dead ends: 23857 [2018-10-24 18:11:24,781 INFO L226 Difference]: Without dead ends: 14038 [2018-10-24 18:11:24,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:11:24,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14038 states. [2018-10-24 18:11:25,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14038 to 14028. [2018-10-24 18:11:25,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14028 states. [2018-10-24 18:11:25,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14028 states to 14028 states and 20435 transitions. [2018-10-24 18:11:25,337 INFO L78 Accepts]: Start accepts. Automaton has 14028 states and 20435 transitions. Word has length 262 [2018-10-24 18:11:25,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:11:25,338 INFO L481 AbstractCegarLoop]: Abstraction has 14028 states and 20435 transitions. [2018-10-24 18:11:25,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:11:25,338 INFO L276 IsEmpty]: Start isEmpty. Operand 14028 states and 20435 transitions. [2018-10-24 18:11:25,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-24 18:11:25,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:11:25,349 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:11:25,350 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:11:25,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:11:25,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1252280123, now seen corresponding path program 1 times [2018-10-24 18:11:25,350 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:11:25,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:11:25,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:11:25,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:11:25,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:11:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:11:26,347 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-10-24 18:11:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-10-24 18:11:26,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:11:26,801 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:11:26,802 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-10-24 18:11:26,802 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [665], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 18:11:26,812 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:11:26,813 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:11:29,515 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:11:47,924 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:11:47,925 INFO L272 AbstractInterpreter]: Visited 140 different actions 408 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 18:11:47,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:11:47,931 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:11:51,036 INFO L232 lantSequenceWeakener]: Weakened 63 states. On average, predicates are now at 74.27% of their original sizes. [2018-10-24 18:11:51,037 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 18:13:25,446 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:13:25,451 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:13:25,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:13:25 BoogieIcfgContainer [2018-10-24 18:13:25,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:13:25,453 INFO L168 Benchmark]: Toolchain (without parser) took 233017.64 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -960.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 18:13:25,454 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 18:13:25,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 964.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:25,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 275.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:25,457 INFO L168 Benchmark]: Boogie Preprocessor took 132.82 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:13:25,458 INFO L168 Benchmark]: RCFGBuilder took 5322.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 199.0 MB). Peak memory consumption was 199.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:25,459 INFO L168 Benchmark]: TraceAbstraction took 226317.13 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -387.9 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 18:13:25,464 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 964.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 275.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.82 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5322.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 199.0 MB). Peak memory consumption was 199.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226317.13 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -387.9 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 51). Cancelled while BasicCegarLoop was analyzing trace of length 266 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 226.2s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 51.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1870 SDtfs, 5263 SDslu, 1199 SDs, 0 SdLazy, 9830 SolverSat, 2125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 667 GetRequests, 620 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14028occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 66.3s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9952257905746282 AbsIntWeakeningRatio, 0.1325581395348837 AbsIntAvgWeakeningVarsNumRemoved, 1097.867441860465 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 2959 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1328 NumberOfCodeBlocks, 1328 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1539 ConstructedInterpolants, 0 QuantifiedInterpolants, 989166 SizeOfPredicates, 0 NumberOfNonLiveVariables, 424 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 726/734 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown