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/Problem16_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:26:51,849 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:26:51,852 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:26:51,868 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:26:51,868 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:26:51,869 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:26:51,871 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:26:51,872 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:26:51,874 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:26:51,875 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:26:51,875 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:26:51,876 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:26:51,877 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:26:51,878 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:26:51,879 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:26:51,880 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:26:51,881 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:26:51,882 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:26:51,884 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:26:51,886 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:26:51,887 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:26:51,888 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:26:51,891 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:26:51,891 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:26:51,892 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:26:51,893 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:26:51,894 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:26:51,895 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:26:51,895 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:26:51,897 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:26:51,897 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:26:51,898 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:26:51,898 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:26:51,898 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:26:51,899 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:26:51,900 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:26:51,900 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 15:26:51,916 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:26:51,916 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:26:51,917 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:26:51,917 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:26:51,917 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:26:51,918 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:26:51,918 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:26:51,918 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:26:51,918 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:26:51,918 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:26:51,919 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:26:51,919 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:26:51,919 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:26:51,920 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:26:51,920 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:26:51,920 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:26:51,920 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:26:51,920 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:26:51,921 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:26:51,921 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:26:51,921 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:26:51,921 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:26:51,921 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:26:51,922 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:26:51,922 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:26:51,922 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:26:51,922 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:26:51,922 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:26:51,923 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:26:51,923 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:26:51,923 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:26:51,923 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:26:51,923 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:26:51,924 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:26:51,970 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:26:51,985 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:26:51,990 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:26:51,992 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:26:51,992 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:26:51,993 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label57_true-unreach-call.c [2018-11-07 15:26:52,042 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b285da341/e5baf01148c74e0980a8b1a1d083088e/FLAG10275acf6 [2018-11-07 15:26:52,668 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:26:52,669 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label57_true-unreach-call.c [2018-11-07 15:26:52,687 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b285da341/e5baf01148c74e0980a8b1a1d083088e/FLAG10275acf6 [2018-11-07 15:26:52,703 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b285da341/e5baf01148c74e0980a8b1a1d083088e [2018-11-07 15:26:52,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:26:52,716 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:26:52,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:26:52,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:26:52,723 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:26:52,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:26:52" (1/1) ... [2018-11-07 15:26:52,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ec1c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:52, skipping insertion in model container [2018-11-07 15:26:52,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:26:52" (1/1) ... [2018-11-07 15:26:52,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:26:52,843 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:26:53,741 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:26:53,747 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:26:54,051 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:26:54,075 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:26:54,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:54 WrapperNode [2018-11-07 15:26:54,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:26:54,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:26:54,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:26:54,078 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:26:54,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:54" (1/1) ... [2018-11-07 15:26:54,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:54" (1/1) ... [2018-11-07 15:26:54,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:26:54,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:26:54,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:26:54,297 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:26:54,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:54" (1/1) ... [2018-11-07 15:26:54,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:54" (1/1) ... [2018-11-07 15:26:54,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:54" (1/1) ... [2018-11-07 15:26:54,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:54" (1/1) ... [2018-11-07 15:26:54,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:54" (1/1) ... [2018-11-07 15:26:54,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:54" (1/1) ... [2018-11-07 15:26:54,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:54" (1/1) ... [2018-11-07 15:26:54,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:26:54,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:26:54,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:26:54,443 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:26:54,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:54" (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 15:26:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:26:54,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:26:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:26:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:26:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:26:54,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:26:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:26:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:26:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:26:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:26:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:27:01,851 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:27:01,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:27:01 BoogieIcfgContainer [2018-11-07 15:27:01,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:27:01,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:27:01,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:27:01,859 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:27:01,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:26:52" (1/3) ... [2018-11-07 15:27:01,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a14e4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:27:01, skipping insertion in model container [2018-11-07 15:27:01,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:54" (2/3) ... [2018-11-07 15:27:01,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a14e4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:27:01, skipping insertion in model container [2018-11-07 15:27:01,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:27:01" (3/3) ... [2018-11-07 15:27:01,863 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label57_true-unreach-call.c [2018-11-07 15:27:01,874 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:27:01,884 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:27:01,904 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:27:01,952 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:27:01,952 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:27:01,952 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:27:01,952 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:27:01,953 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:27:01,953 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:27:01,953 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:27:01,953 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:27:02,006 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 15:27:02,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-07 15:27:02,019 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:27:02,021 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:27:02,024 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:27:02,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:27:02,032 INFO L82 PathProgramCache]: Analyzing trace with hash -768030333, now seen corresponding path program 1 times [2018-11-07 15:27:02,034 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:27:02,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:27:02,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:27:02,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:27:02,097 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:27:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:27:02,509 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:27:02,607 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 15:27:02,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:27:02,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:27:02,610 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:27:02,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:27:02,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:27:02,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:27:02,638 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 15:27:06,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:27:06,166 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 15:27:06,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:27:06,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-11-07 15:27:06,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:27:06,192 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 15:27:06,192 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 15:27:06,204 INFO L604 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 [2018-11-07 15:27:06,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 15:27:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 15:27:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 15:27:06,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-11-07 15:27:06,324 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 47 [2018-11-07 15:27:06,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:27:06,325 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-11-07 15:27:06,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:27:06,325 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-11-07 15:27:06,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 15:27:06,333 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:27:06,334 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:06,334 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:27:06,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:27:06,335 INFO L82 PathProgramCache]: Analyzing trace with hash -722771479, now seen corresponding path program 1 times [2018-11-07 15:27:06,335 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:27:06,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:27:06,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:27:06,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:27:06,337 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:27:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:27:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:27:06,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:27:06,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:27:06,792 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:27:06,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:27:06,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:27:06,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:27:06,799 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-11-07 15:27:13,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:27:13,085 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-11-07 15:27:13,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:27:13,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-07 15:27:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:27:13,101 INFO L225 Difference]: With dead ends: 2184 [2018-11-07 15:27:13,101 INFO L226 Difference]: Without dead ends: 1446 [2018-11-07 15:27:13,107 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:27:13,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-11-07 15:27:13,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-11-07 15:27:13,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-11-07 15:27:13,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-11-07 15:27:13,170 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 140 [2018-11-07 15:27:13,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:27:13,171 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-11-07 15:27:13,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:27:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-11-07 15:27:13,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-07 15:27:13,182 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:27:13,182 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 15:27:13,184 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:27:13,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:27:13,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1752957247, now seen corresponding path program 1 times [2018-11-07 15:27:13,185 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:27:13,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:27:13,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:27:13,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:27:13,186 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:27:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:27:13,607 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:27:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 80 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:27:13,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:27:13,922 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:27:13,923 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-11-07 15:27:13,926 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [455], [457], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 15:27:13,988 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:27:13,989 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:27:14,857 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:27:14,859 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:27:14,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:27:14,903 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:27:15,981 INFO L227 lantSequenceWeakener]: Weakened 229 states. On average, predicates are now at 77.95% of their original sizes. [2018-11-07 15:27:15,982 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:27:16,729 INFO L415 sIntCurrentIteration]: We unified 250 AI predicates to 250 [2018-11-07 15:27:16,733 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:27:16,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:27:16,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 15:27:16,734 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:27:16,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 15:27:16,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 15:27:16,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 15:27:16,736 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 10 states. [2018-11-07 15:27:21,900 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown