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/Problem10_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:19:21,830 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:19:21,833 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:19:21,845 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:19:21,846 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:19:21,847 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:19:21,848 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:19:21,850 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:19:21,851 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:19:21,852 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:19:21,853 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:19:21,853 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:19:21,854 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:19:21,855 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:19:21,856 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:19:21,857 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:19:21,858 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:19:21,860 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:19:21,862 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:19:21,864 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:19:21,865 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:19:21,866 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:19:21,868 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 14:19:21,875 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:19:21,875 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:19:21,876 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:19:21,877 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:19:21,877 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 14:19:21,895 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:19:21,895 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:19:21,896 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:19:21,896 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:19:21,896 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:19:21,897 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:19:21,897 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:19:21,897 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:19:21,897 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:19:21,897 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:19:21,898 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:19:21,898 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:19:21,898 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:19:21,899 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:19:21,899 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:19:21,899 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:19:21,899 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:19:21,899 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:19:21,899 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:19:21,900 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:19:21,900 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:19:21,900 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:19:21,900 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:19:21,900 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:19:21,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:19:21,901 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:19:21,901 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:19:21,901 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:19:21,902 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:19:21,902 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:19:21,902 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:19:21,902 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:19:21,902 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:19:21,903 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:19:21,947 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:19:21,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:19:21,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:19:21,965 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:19:21,965 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:19:21,966 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38_true-unreach-call.c [2018-11-07 14:19:22,024 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b9747fc8/c73f74153c7a415d88332781c101d073/FLAG0b2d6afbb [2018-11-07 14:19:22,570 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:19:22,570 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label38_true-unreach-call.c [2018-11-07 14:19:22,591 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b9747fc8/c73f74153c7a415d88332781c101d073/FLAG0b2d6afbb [2018-11-07 14:19:22,611 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b9747fc8/c73f74153c7a415d88332781c101d073 [2018-11-07 14:19:22,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:19:22,626 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:19:22,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:19:22,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:19:22,635 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:19:22,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:19:22" (1/1) ... [2018-11-07 14:19:22,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3935d1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:22, skipping insertion in model container [2018-11-07 14:19:22,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:19:22" (1/1) ... [2018-11-07 14:19:22,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:19:22,730 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:19:23,248 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:19:23,253 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:19:23,383 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:19:23,406 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:19:23,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:23 WrapperNode [2018-11-07 14:19:23,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:19:23,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:19:23,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:19:23,409 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:19:23,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:23" (1/1) ... [2018-11-07 14:19:23,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:23" (1/1) ... [2018-11-07 14:19:23,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:19:23,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:19:23,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:19:23,545 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:19:23,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:23" (1/1) ... [2018-11-07 14:19:23,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:23" (1/1) ... [2018-11-07 14:19:23,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:23" (1/1) ... [2018-11-07 14:19:23,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:23" (1/1) ... [2018-11-07 14:19:23,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:23" (1/1) ... [2018-11-07 14:19:23,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:23" (1/1) ... [2018-11-07 14:19:23,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:23" (1/1) ... [2018-11-07 14:19:23,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:19:23,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:19:23,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:19:23,632 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:19:23,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:23" (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 14:19:23,706 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:19:23,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:19:23,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:19:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:19:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:19:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:19:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:19:23,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:19:23,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:19:26,881 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:19:26,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:26 BoogieIcfgContainer [2018-11-07 14:19:26,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:19:26,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:19:26,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:19:26,887 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:19:26,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:19:22" (1/3) ... [2018-11-07 14:19:26,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440ebf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:26, skipping insertion in model container [2018-11-07 14:19:26,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:23" (2/3) ... [2018-11-07 14:19:26,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440ebf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:26, skipping insertion in model container [2018-11-07 14:19:26,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:26" (3/3) ... [2018-11-07 14:19:26,891 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label38_true-unreach-call.c [2018-11-07 14:19:26,902 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:19:26,911 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:19:26,930 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:19:26,971 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:19:26,971 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:19:26,971 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:19:26,971 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:19:26,972 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:19:26,972 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:19:26,972 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:19:26,972 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:19:27,001 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 14:19:27,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-07 14:19:27,010 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:19:27,012 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] [2018-11-07 14:19:27,014 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:19:27,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:27,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1705771087, now seen corresponding path program 1 times [2018-11-07 14:19:27,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:19:27,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:27,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:19:27,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:27,086 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:19:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:19:27,531 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:19:27,555 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 14:19:27,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:19:27,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:19:27,558 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:19:27,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:19:27,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:19:27,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:19:27,582 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 14:19:29,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:19:29,245 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 14:19:29,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:19:29,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-11-07 14:19:29,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:19:29,266 INFO L225 Difference]: With dead ends: 574 [2018-11-07 14:19:29,266 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 14:19:29,274 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:19:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 14:19:29,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 14:19:29,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 14:19:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 607 transitions. [2018-11-07 14:19:29,348 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 607 transitions. Word has length 39 [2018-11-07 14:19:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:19:29,349 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 607 transitions. [2018-11-07 14:19:29,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:19:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 607 transitions. [2018-11-07 14:19:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 14:19:29,357 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:19:29,358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:29,358 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:19:29,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:29,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1698105396, now seen corresponding path program 1 times [2018-11-07 14:19:29,359 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:19:29,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:29,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:19:29,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:29,361 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:19:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:19:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 14:19:29,721 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:19:29,721 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:19:29,722 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 128 with the following transitions: [2018-11-07 14:19:29,724 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], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 14:19:29,792 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:19:29,792 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:19:30,342 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:19:30,344 INFO L272 AbstractInterpreter]: Visited 92 different actions 92 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 14:19:30,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:30,376 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:19:30,831 INFO L227 lantSequenceWeakener]: Weakened 121 states. On average, predicates are now at 73.29% of their original sizes. [2018-11-07 14:19:30,831 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:19:31,028 INFO L415 sIntCurrentIteration]: We unified 126 AI predicates to 126 [2018-11-07 14:19:31,029 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:19:31,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:19:31,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2018-11-07 14:19:31,030 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:19:31,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:19:31,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:19:31,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:19:31,033 INFO L87 Difference]: Start difference. First operand 356 states and 607 transitions. Second operand 7 states. [2018-11-07 14:19:33,180 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:23:03,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:23:03,944 INFO L93 Difference]: Finished difference Result 852 states and 1471 transitions. [2018-11-07 14:23:03,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:23:03,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2018-11-07 14:23:03,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:23:03,949 INFO L225 Difference]: With dead ends: 852 [2018-11-07 14:23:03,949 INFO L226 Difference]: Without dead ends: 502 [2018-11-07 14:23:03,952 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:23:03,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2018-11-07 14:23:03,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 500. [2018-11-07 14:23:03,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2018-11-07 14:23:03,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 757 transitions. [2018-11-07 14:23:03,987 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 757 transitions. Word has length 127 [2018-11-07 14:23:03,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:23:03,988 INFO L480 AbstractCegarLoop]: Abstraction has 500 states and 757 transitions. [2018-11-07 14:23:03,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 14:23:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 757 transitions. [2018-11-07 14:23:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-07 14:23:03,999 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:23:03,999 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:23:03,999 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:23:04,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:23:04,000 INFO L82 PathProgramCache]: Analyzing trace with hash -752870242, now seen corresponding path program 1 times [2018-11-07 14:23:04,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:23:04,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:23:04,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:23:04,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:23:04,002 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:23:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:23:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-11-07 14:23:04,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:23:04,347 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:23:04,348 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-11-07 14:23:04,348 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], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 14:23:04,354 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:23:04,354 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:23:04,442 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:23:05,310 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:23:05,311 INFO L272 AbstractInterpreter]: Visited 96 different actions 546 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 14:23:05,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:23:05,341 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:23:05,899 INFO L227 lantSequenceWeakener]: Weakened 41 states. On average, predicates are now at 75.69% of their original sizes. [2018-11-07 14:23:05,899 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:23:06,681 INFO L415 sIntCurrentIteration]: We unified 197 AI predicates to 197 [2018-11-07 14:23:06,681 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:23:06,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:23:06,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [4] total 17 [2018-11-07 14:23:06,682 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:23:06,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 14:23:06,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 14:23:06,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-11-07 14:23:06,684 INFO L87 Difference]: Start difference. First operand 500 states and 757 transitions. Second operand 15 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown