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/Problem14_label29_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:53:40,376 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:53:40,378 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:53:40,396 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:53:40,397 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:53:40,398 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:53:40,399 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:53:40,401 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:53:40,403 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:53:40,404 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:53:40,405 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:53:40,405 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:53:40,406 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:53:40,407 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:53:40,409 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:53:40,410 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:53:40,411 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:53:40,413 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:53:40,415 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:53:40,419 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:53:40,421 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:53:40,422 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:53:40,432 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:53:40,432 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:53:40,432 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:53:40,436 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:53:40,437 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:53:40,442 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:53:40,443 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:53:40,444 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:53:40,448 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:53:40,449 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 23:53:40,452 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 [2018-10-26 23:53:40,483 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:53:40,483 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:53:40,487 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:53:40,488 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:53:40,488 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:53:40,488 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:53:40,488 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:53:40,489 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:53:40,489 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:53:40,489 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:53:40,489 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:53:40,490 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:53:40,491 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:53:40,491 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:53:40,492 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:53:40,492 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:53:40,492 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:53:40,492 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:53:40,493 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:53:40,493 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:53:40,493 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:53:40,493 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:53:40,493 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:53:40,494 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:53:40,494 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:53:40,494 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:53:40,494 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:53:40,495 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:53:40,496 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:53:40,496 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:53:40,497 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:53:40,497 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:53:40,497 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:53:40,497 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:53:40,561 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:53:40,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:53:40,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:53:40,580 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:53:40,580 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:53:40,581 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label29_false-unreach-call_false-termination.c [2018-10-26 23:53:40,648 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0cd15ec98/a4ace4c046b84093b49a03640a8eac96/FLAG810d6d0c2 [2018-10-26 23:53:41,288 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:53:41,290 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label29_false-unreach-call_false-termination.c [2018-10-26 23:53:41,323 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0cd15ec98/a4ace4c046b84093b49a03640a8eac96/FLAG810d6d0c2 [2018-10-26 23:53:41,347 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0cd15ec98/a4ace4c046b84093b49a03640a8eac96 [2018-10-26 23:53:41,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:53:41,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:53:41,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:53:41,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:53:41,368 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:53:41,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:53:41" (1/1) ... [2018-10-26 23:53:41,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a192096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:41, skipping insertion in model container [2018-10-26 23:53:41,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:53:41" (1/1) ... [2018-10-26 23:53:41,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:53:41,461 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:53:42,007 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:53:42,012 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:53:42,165 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:53:42,189 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:53:42,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:42 WrapperNode [2018-10-26 23:53:42,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:53:42,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:53:42,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:53:42,191 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:53:42,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:42" (1/1) ... [2018-10-26 23:53:42,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:42" (1/1) ... [2018-10-26 23:53:42,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:53:42,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:53:42,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:53:42,445 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:53:42,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:42" (1/1) ... [2018-10-26 23:53:42,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:42" (1/1) ... [2018-10-26 23:53:42,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:42" (1/1) ... [2018-10-26 23:53:42,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:42" (1/1) ... [2018-10-26 23:53:42,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:42" (1/1) ... [2018-10-26 23:53:42,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:42" (1/1) ... [2018-10-26 23:53:42,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:42" (1/1) ... [2018-10-26 23:53:42,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:53:42,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:53:42,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:53:42,582 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:53:42,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:42" (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 [2018-10-26 23:53:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:53:42,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:53:42,660 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:53:42,660 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:53:42,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:53:42,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:53:42,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:53:42,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:53:46,283 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:53:46,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:53:46 BoogieIcfgContainer [2018-10-26 23:53:46,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:53:46,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:53:46,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:53:46,294 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:53:46,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:53:41" (1/3) ... [2018-10-26 23:53:46,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f90887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:53:46, skipping insertion in model container [2018-10-26 23:53:46,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:42" (2/3) ... [2018-10-26 23:53:46,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f90887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:53:46, skipping insertion in model container [2018-10-26 23:53:46,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:53:46" (3/3) ... [2018-10-26 23:53:46,298 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label29_false-unreach-call_false-termination.c [2018-10-26 23:53:46,309 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:53:46,324 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:53:46,343 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:53:46,401 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:53:46,401 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:53:46,402 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:53:46,402 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:53:46,402 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:53:46,402 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:53:46,402 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:53:46,403 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:53:46,436 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-26 23:53:46,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 23:53:46,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:46,447 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] [2018-10-26 23:53:46,450 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:46,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:46,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1296810127, now seen corresponding path program 1 times [2018-10-26 23:53:46,460 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:53:46,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:46,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:46,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:46,510 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:53:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:46,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:53:46,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:53:46,891 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:53:46,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:53:46,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:53:46,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:53:46,911 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-26 23:53:49,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:49,866 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-10-26 23:53:49,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:53:49,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-26 23:53:49,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:49,892 INFO L225 Difference]: With dead ends: 894 [2018-10-26 23:53:49,892 INFO L226 Difference]: Without dead ends: 633 [2018-10-26 23:53:49,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:53:49,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-26 23:53:49,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-10-26 23:53:49,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-10-26 23:53:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-10-26 23:53:50,001 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 23 [2018-10-26 23:53:50,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:50,002 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-10-26 23:53:50,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:53:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-10-26 23:53:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-26 23:53:50,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:50,011 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:53:50,011 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:50,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:50,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1722550117, now seen corresponding path program 1 times [2018-10-26 23:53:50,012 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:53:50,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:50,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:50,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:50,014 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:53:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:50,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:53:50,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:53:50,440 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:53:50,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:53:50,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:53:50,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:53:50,444 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-10-26 23:53:54,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:54,079 INFO L93 Difference]: Finished difference Result 2170 states and 3490 transitions. [2018-10-26 23:53:54,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:53:54,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-10-26 23:53:54,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:54,098 INFO L225 Difference]: With dead ends: 2170 [2018-10-26 23:53:54,099 INFO L226 Difference]: Without dead ends: 1543 [2018-10-26 23:53:54,105 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 [2018-10-26 23:53:54,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2018-10-26 23:53:54,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2018-10-26 23:53:54,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2018-10-26 23:53:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2271 transitions. [2018-10-26 23:53:54,193 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2271 transitions. Word has length 136 [2018-10-26 23:53:54,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:54,194 INFO L481 AbstractCegarLoop]: Abstraction has 1543 states and 2271 transitions. [2018-10-26 23:53:54,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:53:54,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2271 transitions. [2018-10-26 23:53:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-26 23:53:54,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:54,207 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 23:53:54,207 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:54,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:54,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1034192261, now seen corresponding path program 1 times [2018-10-26 23:53:54,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:53:54,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:54,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:54,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:54,209 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:53:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 32 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:53:54,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:53:54,717 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:53:54,718 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 212 with the following transitions: [2018-10-26 23:53:54,720 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [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], [514], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:53:54,799 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:53:54,800 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:53:57,790 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:54:00,629 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:54:00,631 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-26 23:54:00,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:54:00,681 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:54:03,432 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 77.48% of their original sizes. [2018-10-26 23:54:03,432 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:54:03,918 INFO L415 sIntCurrentIteration]: We unified 210 AI predicates to 210 [2018-10-26 23:54:03,918 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:54:03,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:54:03,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-26 23:54:03,920 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:54:03,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:54:03,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:54:03,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:54:03,924 INFO L87 Difference]: Start difference. First operand 1543 states and 2271 transitions. Second operand 7 states. [2018-10-26 23:54:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:54:30,402 INFO L93 Difference]: Finished difference Result 3265 states and 4776 transitions. [2018-10-26 23:54:30,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:54:30,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2018-10-26 23:54:30,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:54:30,413 INFO L225 Difference]: With dead ends: 3265 [2018-10-26 23:54:30,413 INFO L226 Difference]: Without dead ends: 1728 [2018-10-26 23:54:30,418 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:54:30,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2018-10-26 23:54:30,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2018-10-26 23:54:30,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1726 states. [2018-10-26 23:54:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2461 transitions. [2018-10-26 23:54:30,477 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2461 transitions. Word has length 211 [2018-10-26 23:54:30,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:54:30,480 INFO L481 AbstractCegarLoop]: Abstraction has 1726 states and 2461 transitions. [2018-10-26 23:54:30,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:54:30,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2461 transitions. [2018-10-26 23:54:30,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-10-26 23:54:30,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:54:30,491 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 23:54:30,492 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:54:30,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:54:30,493 INFO L82 PathProgramCache]: Analyzing trace with hash 931255223, now seen corresponding path program 1 times [2018-10-26 23:54:30,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:54:30,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:54:30,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:54:30,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:54:30,496 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:54:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:54:31,181 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 23:54:31,890 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 136 proven. 142 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:54:31,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:54:31,891 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:54:31,891 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 297 with the following transitions: [2018-10-26 23:54:31,892 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [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], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:54:31,899 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:54:31,899 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:54:33,796 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:54:37,973 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:54:37,973 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:54:38,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:54:38,008 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:54:40,547 INFO L227 lantSequenceWeakener]: Weakened 96 states. On average, predicates are now at 78.02% of their original sizes. [2018-10-26 23:54:40,547 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:55:16,602 INFO L415 sIntCurrentIteration]: We unified 295 AI predicates to 295 [2018-10-26 23:55:16,602 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:55:16,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:55:16,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-10-26 23:55:16,603 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:55:16,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-26 23:55:16,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-26 23:55:16,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-10-26 23:55:16,605 INFO L87 Difference]: Start difference. First operand 1726 states and 2461 transitions. Second operand 20 states. [2018-10-26 23:57:41,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:57:41,983 INFO L93 Difference]: Finished difference Result 4027 states and 5711 transitions. [2018-10-26 23:57:41,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-26 23:57:41,983 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 296 [2018-10-26 23:57:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:57:41,997 INFO L225 Difference]: With dead ends: 4027 [2018-10-26 23:57:41,997 INFO L226 Difference]: Without dead ends: 2490 [2018-10-26 23:57:42,003 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 302 GetRequests, 237 SyntacticMatches, 40 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 37.4s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2018-10-26 23:57:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2018-10-26 23:57:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2452. [2018-10-26 23:57:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2452 states. [2018-10-26 23:57:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3229 transitions. [2018-10-26 23:57:42,182 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3229 transitions. Word has length 296 [2018-10-26 23:57:42,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:57:42,182 INFO L481 AbstractCegarLoop]: Abstraction has 2452 states and 3229 transitions. [2018-10-26 23:57:42,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-26 23:57:42,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3229 transitions. Received shutdown request... [2018-10-26 23:57:42,190 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:57:42,194 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:57:42,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:57:42 BoogieIcfgContainer [2018-10-26 23:57:42,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:57:42,197 INFO L168 Benchmark]: Toolchain (without parser) took 240836.25 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 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-26 23:57:42,198 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 23:57:42,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 827.30 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-26 23:57:42,203 INFO L168 Benchmark]: Boogie Procedure Inliner took 253.83 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 717.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -803.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2018-10-26 23:57:42,205 INFO L168 Benchmark]: Boogie Preprocessor took 136.38 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-26 23:57:42,206 INFO L168 Benchmark]: RCFGBuilder took 3706.55 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 134.4 MB). Peak memory consumption was 134.4 MB. Max. memory is 7.1 GB. [2018-10-26 23:57:42,206 INFO L168 Benchmark]: TraceAbstraction took 235905.32 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -448.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-26 23:57:42,215 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 827.30 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 253.83 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 717.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -803.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.38 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3706.55 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 134.4 MB). Peak memory consumption was 134.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235905.32 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.5 GB in the end (delta: -448.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 52). Cancelled while IsEmpty was searching accepting run (input had 2452 states). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 235.8s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 178.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 801 SDtfs, 3593 SDslu, 782 SDs, 0 SdLazy, 5392 SolverSat, 935 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 524 GetRequests, 449 SyntacticMatches, 40 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 38.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2452occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9951607117233461 AbsIntWeakeningRatio, 0.11485148514851486 AbsIntAvgWeakeningVarsNumRemoved, 583.6217821782178 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 666 NumberOfCodeBlocks, 666 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 662 ConstructedInterpolants, 0 QuantifiedInterpolants, 1846257 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 194/406 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown