java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:28:14,417 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:28:14,419 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:28:14,432 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:28:14,433 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:28:14,434 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:28:14,436 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:28:14,438 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:28:14,440 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:28:14,441 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:28:14,442 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:28:14,442 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:28:14,443 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:28:14,444 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:28:14,446 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:28:14,447 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:28:14,448 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:28:14,450 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:28:14,452 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:28:14,453 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:28:14,455 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:28:14,456 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:28:14,458 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:28:14,458 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:28:14,459 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:28:14,460 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:28:14,461 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:28:14,462 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:28:14,462 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:28:14,464 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:28:14,464 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:28:14,465 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:28:14,465 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:28:14,465 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:28:14,466 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:28:14,467 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:28:14,467 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:28:14,483 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:28:14,483 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:28:14,484 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:28:14,484 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:28:14,484 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:28:14,485 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:28:14,485 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:28:14,485 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:28:14,485 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:28:14,486 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:28:14,486 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:28:14,486 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:28:14,487 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:28:14,487 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:28:14,487 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:28:14,488 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:28:14,488 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:28:14,488 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:28:14,488 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:28:14,489 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:28:14,489 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:28:14,489 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:28:14,489 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:28:14,490 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:28:14,490 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:28:14,490 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:28:14,490 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:28:14,490 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:28:14,491 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:28:14,491 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:28:14,491 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:28:14,491 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:28:14,492 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:28:14,492 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:28:14,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:28:14,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:28:14,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:28:14,557 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:28:14,558 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:28:14,559 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label24_true-unreach-call.c [2018-11-07 14:28:14,620 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0586300/6bb29e239b0544e2930d5fe5b8ec825e/FLAGf5bbc2251 [2018-11-07 14:28:15,277 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:28:15,278 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label24_true-unreach-call.c [2018-11-07 14:28:15,308 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0586300/6bb29e239b0544e2930d5fe5b8ec825e/FLAGf5bbc2251 [2018-11-07 14:28:15,325 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0586300/6bb29e239b0544e2930d5fe5b8ec825e [2018-11-07 14:28:15,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:28:15,339 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:28:15,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:28:15,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:28:15,345 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:28:15,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:28:15" (1/1) ... [2018-11-07 14:28:15,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ade47ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:15, skipping insertion in model container [2018-11-07 14:28:15,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:28:15" (1/1) ... [2018-11-07 14:28:15,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:28:15,448 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:28:16,063 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:28:16,068 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:28:16,228 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:28:16,248 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:28:16,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:16 WrapperNode [2018-11-07 14:28:16,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:28:16,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:28:16,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:28:16,250 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:28:16,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:16" (1/1) ... [2018-11-07 14:28:16,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:16" (1/1) ... [2018-11-07 14:28:16,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:28:16,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:28:16,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:28:16,451 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:28:16,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:16" (1/1) ... [2018-11-07 14:28:16,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:16" (1/1) ... [2018-11-07 14:28:16,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:16" (1/1) ... [2018-11-07 14:28:16,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:16" (1/1) ... [2018-11-07 14:28:16,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:16" (1/1) ... [2018-11-07 14:28:16,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:16" (1/1) ... [2018-11-07 14:28:16,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:16" (1/1) ... [2018-11-07 14:28:16,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:28:16,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:28:16,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:28:16,599 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:28:16,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:28:16,677 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:28:16,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:28:16,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:28:16,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:28:16,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:28:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:28:16,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:28:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:28:16,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:28:20,929 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:28:20,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:28:20 BoogieIcfgContainer [2018-11-07 14:28:20,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:28:20,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:28:20,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:28:20,935 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:28:20,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:28:15" (1/3) ... [2018-11-07 14:28:20,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95a5357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:28:20, skipping insertion in model container [2018-11-07 14:28:20,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:16" (2/3) ... [2018-11-07 14:28:20,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95a5357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:28:20, skipping insertion in model container [2018-11-07 14:28:20,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:28:20" (3/3) ... [2018-11-07 14:28:20,940 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label24_true-unreach-call.c [2018-11-07 14:28:20,950 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:28:20,961 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:28:20,984 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:28:21,026 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:28:21,026 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:28:21,026 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:28:21,026 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:28:21,027 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:28:21,027 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:28:21,027 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:28:21,027 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:28:21,071 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 14:28:21,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-07 14:28:21,084 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:28:21,087 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:28:21,089 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:28:21,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:28:21,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1684659980, now seen corresponding path program 1 times [2018-11-07 14:28:21,101 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:28:21,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:21,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:28:21,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:21,161 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:28:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:28:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:28:21,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:28:21,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:28:21,714 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:28:21,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:28:21,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:28:21,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:28:21,744 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 14:28:24,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:28:24,989 INFO L93 Difference]: Finished difference Result 996 states and 1776 transitions. [2018-11-07 14:28:24,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:28:24,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-11-07 14:28:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:28:25,014 INFO L225 Difference]: With dead ends: 996 [2018-11-07 14:28:25,014 INFO L226 Difference]: Without dead ends: 697 [2018-11-07 14:28:25,024 INFO L604 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 [2018-11-07 14:28:25,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2018-11-07 14:28:25,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 481. [2018-11-07 14:28:25,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-11-07 14:28:25,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 742 transitions. [2018-11-07 14:28:25,121 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 742 transitions. Word has length 58 [2018-11-07 14:28:25,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:28:25,122 INFO L480 AbstractCegarLoop]: Abstraction has 481 states and 742 transitions. [2018-11-07 14:28:25,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:28:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 742 transitions. [2018-11-07 14:28:25,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 14:28:25,132 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:28:25,133 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:28:25,133 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:28:25,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:28:25,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1326176867, now seen corresponding path program 1 times [2018-11-07 14:28:25,134 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:28:25,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:25,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:28:25,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:25,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:28:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:28:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:28:25,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:28:25,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:28:25,507 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:28:25,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:28:25,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:28:25,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:28:25,510 INFO L87 Difference]: Start difference. First operand 481 states and 742 transitions. Second operand 6 states. [2018-11-07 14:28:29,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:28:29,721 INFO L93 Difference]: Finished difference Result 1725 states and 2777 transitions. [2018-11-07 14:28:29,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:28:29,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 14:28:29,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:28:29,748 INFO L225 Difference]: With dead ends: 1725 [2018-11-07 14:28:29,748 INFO L226 Difference]: Without dead ends: 1250 [2018-11-07 14:28:29,755 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:28:29,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2018-11-07 14:28:29,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1231. [2018-11-07 14:28:29,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2018-11-07 14:28:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1812 transitions. [2018-11-07 14:28:29,839 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1812 transitions. Word has length 131 [2018-11-07 14:28:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:28:29,840 INFO L480 AbstractCegarLoop]: Abstraction has 1231 states and 1812 transitions. [2018-11-07 14:28:29,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:28:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1812 transitions. [2018-11-07 14:28:29,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 14:28:29,850 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:28:29,850 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:28:29,851 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:28:29,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:28:29,851 INFO L82 PathProgramCache]: Analyzing trace with hash -704139656, now seen corresponding path program 1 times [2018-11-07 14:28:29,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:28:29,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:29,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:28:29,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:29,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:28:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:28:30,494 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 14:28:30,970 WARN L179 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-11-07 14:28:31,081 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:28:31,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:28:31,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 14:28:31,082 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:28:31,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:28:31,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:28:31,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:28:31,084 INFO L87 Difference]: Start difference. First operand 1231 states and 1812 transitions. Second operand 7 states. [2018-11-07 14:28:35,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:28:35,975 INFO L93 Difference]: Finished difference Result 3652 states and 5569 transitions. [2018-11-07 14:28:35,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 14:28:35,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2018-11-07 14:28:35,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:28:35,998 INFO L225 Difference]: With dead ends: 3652 [2018-11-07 14:28:35,999 INFO L226 Difference]: Without dead ends: 2427 [2018-11-07 14:28:36,010 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 14:28:36,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2018-11-07 14:28:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2147. [2018-11-07 14:28:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2018-11-07 14:28:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 2934 transitions. [2018-11-07 14:28:36,112 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 2934 transitions. Word has length 132 [2018-11-07 14:28:36,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:28:36,112 INFO L480 AbstractCegarLoop]: Abstraction has 2147 states and 2934 transitions. [2018-11-07 14:28:36,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 14:28:36,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 2934 transitions. [2018-11-07 14:28:36,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-07 14:28:36,117 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:28:36,117 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:28:36,118 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:28:36,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:28:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1415755325, now seen corresponding path program 1 times [2018-11-07 14:28:36,119 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:28:36,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:36,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:28:36,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:36,121 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:28:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:28:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 14:28:36,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:28:36,395 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:28:36,396 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 176 with the following transitions: [2018-11-07 14:28:36,398 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:28:36,458 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:28:36,459 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:28:37,219 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:28:38,932 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:28:38,934 INFO L272 AbstractInterpreter]: Visited 124 different actions 359 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 14:28:38,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:28:38,981 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:28:39,630 INFO L227 lantSequenceWeakener]: Weakened 172 states. On average, predicates are now at 73.81% of their original sizes. [2018-11-07 14:28:39,630 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:28:40,566 INFO L415 sIntCurrentIteration]: We unified 174 AI predicates to 174 [2018-11-07 14:28:40,566 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:28:40,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:28:40,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-07 14:28:40,568 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:28:40,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 14:28:40,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 14:28:40,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 14:28:40,570 INFO L87 Difference]: Start difference. First operand 2147 states and 2934 transitions. Second operand 11 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown