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_label48_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:42:37,706 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:42:37,708 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:42:37,720 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:42:37,720 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:42:37,721 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:42:37,723 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:42:37,726 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:42:37,727 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:42:37,728 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:42:37,729 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:42:37,729 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:42:37,730 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:42:37,731 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:42:37,732 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:42:37,733 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:42:37,734 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:42:37,736 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:42:37,738 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:42:37,739 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:42:37,740 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:42:37,741 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:42:37,744 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:42:37,744 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:42:37,745 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:42:37,745 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:42:37,746 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:42:37,747 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:42:37,748 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:42:37,749 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:42:37,749 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:42:37,750 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 21:42:37,754 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 21:42:37,770 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:42:37,770 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:42:37,771 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:42:37,771 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:42:37,771 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:42:37,771 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:42:37,772 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:42:37,772 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:42:37,772 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:42:37,772 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:42:37,772 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:42:37,773 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:42:37,773 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:42:37,773 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:42:37,774 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:42:37,774 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:42:37,774 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:42:37,774 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:42:37,774 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:42:37,775 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:42:37,775 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:42:37,775 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:42:37,775 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:42:37,775 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:42:37,776 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:42:37,776 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:42:37,776 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:42:37,776 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:42:37,776 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:42:37,777 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:42:37,777 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:42:37,777 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:42:37,777 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:42:37,777 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:42:37,823 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:42:37,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:42:37,840 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:42:37,842 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:42:37,842 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:42:37,843 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label48_true-unreach-call_false-termination.c [2018-10-24 21:42:37,902 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/88e6ebe39/320ed0edb9ca4fefb81c6f593a82086b/FLAG339b1e303 [2018-10-24 21:42:38,525 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:42:38,526 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label48_true-unreach-call_false-termination.c [2018-10-24 21:42:38,552 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/88e6ebe39/320ed0edb9ca4fefb81c6f593a82086b/FLAG339b1e303 [2018-10-24 21:42:38,572 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/88e6ebe39/320ed0edb9ca4fefb81c6f593a82086b [2018-10-24 21:42:38,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:42:38,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:42:38,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:42:38,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:42:38,596 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:42:38,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:42:38" (1/1) ... [2018-10-24 21:42:38,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128929bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:38, skipping insertion in model container [2018-10-24 21:42:38,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:42:38" (1/1) ... [2018-10-24 21:42:38,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:42:38,699 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:42:39,213 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:42:39,220 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:42:39,378 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:42:39,396 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:42:39,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:39 WrapperNode [2018-10-24 21:42:39,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:42:39,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:42:39,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:42:39,398 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:42:39,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:39" (1/1) ... [2018-10-24 21:42:39,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:39" (1/1) ... [2018-10-24 21:42:39,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:42:39,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:42:39,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:42:39,627 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:42:39,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:39" (1/1) ... [2018-10-24 21:42:39,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:39" (1/1) ... [2018-10-24 21:42:39,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:39" (1/1) ... [2018-10-24 21:42:39,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:39" (1/1) ... [2018-10-24 21:42:39,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:39" (1/1) ... [2018-10-24 21:42:39,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:39" (1/1) ... [2018-10-24 21:42:39,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:39" (1/1) ... [2018-10-24 21:42:39,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:42:39,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:42:39,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:42:39,755 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:42:39,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:39" (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 21:42:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:42:39,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:42:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:42:39,825 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:42:39,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:42:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:42:39,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:42:39,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:42:43,361 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:42:43,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:42:43 BoogieIcfgContainer [2018-10-24 21:42:43,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:42:43,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:42:43,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:42:43,369 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:42:43,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:42:38" (1/3) ... [2018-10-24 21:42:43,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:42:43, skipping insertion in model container [2018-10-24 21:42:43,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:39" (2/3) ... [2018-10-24 21:42:43,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:42:43, skipping insertion in model container [2018-10-24 21:42:43,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:42:43" (3/3) ... [2018-10-24 21:42:43,373 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label48_true-unreach-call_false-termination.c [2018-10-24 21:42:43,383 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:42:43,392 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:42:43,409 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:42:43,448 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:42:43,448 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:42:43,448 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:42:43,448 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:42:43,448 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:42:43,449 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:42:43,449 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:42:43,449 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:42:43,476 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:42:43,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-24 21:42:43,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:42:43,486 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] [2018-10-24 21:42:43,488 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:42:43,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:43,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1554885399, now seen corresponding path program 1 times [2018-10-24 21:42:43,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:42:43,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:43,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:42:43,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:43,546 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:42:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:42:43,994 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 21:42:43,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:42:43,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:42:43,997 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:42:44,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:42:44,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:42:44,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:42:44,024 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 21:42:45,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:42:45,838 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 21:42:45,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:42:45,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-10-24 21:42:45,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:42:45,862 INFO L225 Difference]: With dead ends: 691 [2018-10-24 21:42:45,863 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 21:42:45,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:42:45,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 21:42:45,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 21:42:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:42:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 773 transitions. [2018-10-24 21:42:45,964 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 773 transitions. Word has length 45 [2018-10-24 21:42:45,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:42:45,964 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 773 transitions. [2018-10-24 21:42:45,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:42:45,965 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 773 transitions. [2018-10-24 21:42:45,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 21:42:45,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:42:45,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:42:45,973 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:42:45,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:45,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1040211556, now seen corresponding path program 1 times [2018-10-24 21:42:45,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:42:45,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:45,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:42:45,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:45,976 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:42:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:42:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:42:46,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:42:46,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:42:46,315 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:42:46,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:42:46,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:42:46,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:42:46,319 INFO L87 Difference]: Start difference. First operand 434 states and 773 transitions. Second operand 6 states. [2018-10-24 21:42:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:42:50,958 INFO L93 Difference]: Finished difference Result 1610 states and 2994 transitions. [2018-10-24 21:42:50,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:42:50,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-24 21:42:50,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:42:50,971 INFO L225 Difference]: With dead ends: 1610 [2018-10-24 21:42:50,971 INFO L226 Difference]: Without dead ends: 1182 [2018-10-24 21:42:50,977 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 21:42:50,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2018-10-24 21:42:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1142. [2018-10-24 21:42:51,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2018-10-24 21:42:51,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1838 transitions. [2018-10-24 21:42:51,070 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1838 transitions. Word has length 127 [2018-10-24 21:42:51,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:42:51,071 INFO L481 AbstractCegarLoop]: Abstraction has 1142 states and 1838 transitions. [2018-10-24 21:42:51,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:42:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1838 transitions. [2018-10-24 21:42:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 21:42:51,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:42:51,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:42:51,081 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:42:51,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:51,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1871635456, now seen corresponding path program 1 times [2018-10-24 21:42:51,082 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:42:51,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:51,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:42:51,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:51,084 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:42:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:42:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:42:51,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:42:51,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:42:51,338 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:42:51,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:42:51,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:42:51,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:42:51,340 INFO L87 Difference]: Start difference. First operand 1142 states and 1838 transitions. Second operand 4 states. [2018-10-24 21:42:54,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:42:54,258 INFO L93 Difference]: Finished difference Result 4190 states and 6998 transitions. [2018-10-24 21:42:54,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:42:54,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-10-24 21:42:54,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:42:54,274 INFO L225 Difference]: With dead ends: 4190 [2018-10-24 21:42:54,275 INFO L226 Difference]: Without dead ends: 1983 [2018-10-24 21:42:54,290 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 21:42:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2018-10-24 21:42:54,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1981. [2018-10-24 21:42:54,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-24 21:42:54,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3072 transitions. [2018-10-24 21:42:54,350 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3072 transitions. Word has length 129 [2018-10-24 21:42:54,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:42:54,350 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3072 transitions. [2018-10-24 21:42:54,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:42:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3072 transitions. [2018-10-24 21:42:54,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-24 21:42:54,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:42:54,359 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:42:54,359 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:42:54,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:54,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1881623504, now seen corresponding path program 1 times [2018-10-24 21:42:54,359 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:42:54,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:54,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:42:54,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:54,361 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:42:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:42:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:42:54,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:42:54,853 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:42:54,854 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-10-24 21:42:54,856 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], [261], [263], [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], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:42:54,946 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:42:54,947 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:42:56,678 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:42:57,319 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:42:57,321 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:42:57,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:57,330 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:42:59,491 INFO L232 lantSequenceWeakener]: Weakened 220 states. On average, predicates are now at 77.92% of their original sizes. [2018-10-24 21:42:59,492 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:42:59,764 INFO L413 sIntCurrentIteration]: We have 227 unified AI predicates [2018-10-24 21:42:59,765 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:42:59,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:42:59,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:42:59,766 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:42:59,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:42:59,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:42:59,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:42:59,767 INFO L87 Difference]: Start difference. First operand 1981 states and 3072 transitions. Second operand 7 states. [2018-10-24 21:43:21,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:43:21,250 INFO L93 Difference]: Finished difference Result 4141 states and 6371 transitions. [2018-10-24 21:43:21,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:43:21,250 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2018-10-24 21:43:21,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:43:21,263 INFO L225 Difference]: With dead ends: 4141 [2018-10-24 21:43:21,263 INFO L226 Difference]: Without dead ends: 2166 [2018-10-24 21:43:21,271 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 228 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:43:21,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2018-10-24 21:43:21,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2164. [2018-10-24 21:43:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2164 states. [2018-10-24 21:43:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 3263 transitions. [2018-10-24 21:43:21,330 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 3263 transitions. Word has length 228 [2018-10-24 21:43:21,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:43:21,331 INFO L481 AbstractCegarLoop]: Abstraction has 2164 states and 3263 transitions. [2018-10-24 21:43:21,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:43:21,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 3263 transitions. [2018-10-24 21:43:21,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-24 21:43:21,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:43:21,340 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:43:21,340 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:43:21,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:21,341 INFO L82 PathProgramCache]: Analyzing trace with hash -979237250, now seen corresponding path program 1 times [2018-10-24 21:43:21,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:43:21,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:21,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:43:21,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:21,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:43:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:43:21,820 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:43:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 202 proven. 164 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:43:22,318 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:43:22,318 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:43:22,319 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-10-24 21:43:22,319 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], [261], [263], [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], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:43:22,325 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:43:22,325 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:43:26,901 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:43:27,589 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:43:27,589 INFO L272 AbstractInterpreter]: Visited 105 different actions 204 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:43:27,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:27,596 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:43:30,526 INFO L232 lantSequenceWeakener]: Weakened 49 states. On average, predicates are now at 80.78% of their original sizes. [2018-10-24 21:43:30,527 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:43:37,892 INFO L413 sIntCurrentIteration]: We have 312 unified AI predicates [2018-10-24 21:43:37,893 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:43:37,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:43:37,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-10-24 21:43:37,893 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:43:37,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 21:43:37,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 21:43:37,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-10-24 21:43:37,895 INFO L87 Difference]: Start difference. First operand 2164 states and 3263 transitions. Second operand 19 states. [2018-10-24 21:46:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:46:13,529 INFO L93 Difference]: Finished difference Result 4850 states and 7227 transitions. [2018-10-24 21:46:13,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-24 21:46:13,529 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 313 [2018-10-24 21:46:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:46:13,544 INFO L225 Difference]: With dead ends: 4850 [2018-10-24 21:46:13,545 INFO L226 Difference]: Without dead ends: 2875 [2018-10-24 21:46:13,552 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 321 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2018-10-24 21:46:13,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2018-10-24 21:46:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2872. [2018-10-24 21:46:13,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2872 states. [2018-10-24 21:46:13,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 4008 transitions. [2018-10-24 21:46:13,704 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 4008 transitions. Word has length 313 [2018-10-24 21:46:13,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:46:13,704 INFO L481 AbstractCegarLoop]: Abstraction has 2872 states and 4008 transitions. [2018-10-24 21:46:13,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-24 21:46:13,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 4008 transitions. [2018-10-24 21:46:13,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-24 21:46:13,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:46:13,718 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 21:46:13,718 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:46:13,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:13,718 INFO L82 PathProgramCache]: Analyzing trace with hash -4280790, now seen corresponding path program 1 times [2018-10-24 21:46:13,718 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:46:13,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:13,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:46:13,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:13,720 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:46:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:46:14,214 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:46:14,427 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 21:46:14,658 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:46:14,932 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 21:46:15,293 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 21:46:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 213 proven. 166 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:46:15,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:46:15,736 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:46:15,736 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 340 with the following transitions: [2018-10-24 21:46:15,737 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], [261], [263], [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], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:46:15,741 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:46:15,742 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:46:17,534 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:46:22,104 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:46:22,104 INFO L272 AbstractInterpreter]: Visited 120 different actions 234 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:46:22,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:22,108 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:46:24,869 INFO L232 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 78.09% of their original sizes. [2018-10-24 21:46:24,869 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:46:30,699 INFO L413 sIntCurrentIteration]: We have 338 unified AI predicates [2018-10-24 21:46:30,700 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:46:30,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:46:30,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [15] total 31 [2018-10-24 21:46:30,700 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:46:30,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 21:46:30,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 21:46:30,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-10-24 21:46:30,701 INFO L87 Difference]: Start difference. First operand 2872 states and 4008 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 21:46:36,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 21:46:36,012 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:46:36,018 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:46:36,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:46:36 BoogieIcfgContainer [2018-10-24 21:46:36,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:46:36,019 INFO L168 Benchmark]: Toolchain (without parser) took 237434.51 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -768.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 21:46:36,020 INFO L168 Benchmark]: CDTParser took 0.20 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 21:46:36,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 810.35 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:46:36,021 INFO L168 Benchmark]: Boogie Procedure Inliner took 229.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -854.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:46:36,022 INFO L168 Benchmark]: Boogie Preprocessor took 126.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:46:36,023 INFO L168 Benchmark]: RCFGBuilder took 3608.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 128.6 MB). Peak memory consumption was 128.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:46:36,024 INFO L168 Benchmark]: TraceAbstraction took 232654.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -108.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 21:46:36,028 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 810.35 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 229.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -854.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3608.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 128.6 MB). Peak memory consumption was 128.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232654.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -108.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 118). Cancelled while BasicCegarLoop was constructing difference of abstraction (2872states) and FLOYD_HOARE automaton (currently 9 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (20 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 232.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 191.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 777 SDtfs, 3961 SDslu, 587 SDs, 0 SdLazy, 6512 SolverSat, 1137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 910 GetRequests, 847 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 15.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2872occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.1s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9955773965924676 AbsIntWeakeningRatio, 0.10262257696693272 AbsIntAvgWeakeningVarsNumRemoved, 269.0855188141391 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1181 NumberOfCodeBlocks, 1181 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1175 ConstructedInterpolants, 0 QuantifiedInterpolants, 2793315 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 662/994 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown