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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:51:39,644 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:51:39,649 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:51:39,664 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:51:39,665 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:51:39,666 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:51:39,667 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:51:39,669 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:51:39,671 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:51:39,671 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:51:39,673 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:51:39,673 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:51:39,674 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:51:39,675 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:51:39,676 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:51:39,677 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:51:39,678 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:51:39,680 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:51:39,682 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:51:39,684 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:51:39,685 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:51:39,686 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:51:39,688 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 02:51:39,689 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 02:51:39,689 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 02:51:39,690 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 02:51:39,691 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 02:51:39,692 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 02:51:39,693 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 02:51:39,694 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 02:51:39,694 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 02:51:39,695 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 02:51:39,695 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 02:51:39,695 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 02:51:39,696 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 02:51:39,697 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 02:51:39,697 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 02:51:39,717 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:51:39,717 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:51:39,718 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:51:39,718 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:51:39,718 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:51:39,718 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:51:39,719 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:51:39,719 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:51:39,719 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:51:39,719 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:51:39,719 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:51:39,720 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:51:39,720 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:51:39,721 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:51:39,721 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:51:39,721 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:51:39,721 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:51:39,721 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:51:39,722 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:51:39,722 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:51:39,722 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:51:39,722 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:51:39,722 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:51:39,723 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:51:39,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:51:39,723 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:51:39,723 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:51:39,724 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:51:39,724 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:51:39,724 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:51:39,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:51:39,724 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:51:39,725 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:51:39,725 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:51:39,772 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:51:39,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:51:39,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:51:39,797 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:51:39,797 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:51:39,798 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label03_true-unreach-call.c [2018-11-07 02:51:39,876 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe549e81/9b2b0d4d024b42209a722061f2dd59ec/FLAGa47b98651 [2018-11-07 02:51:40,544 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:51:40,545 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label03_true-unreach-call.c [2018-11-07 02:51:40,563 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe549e81/9b2b0d4d024b42209a722061f2dd59ec/FLAGa47b98651 [2018-11-07 02:51:40,584 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe549e81/9b2b0d4d024b42209a722061f2dd59ec [2018-11-07 02:51:40,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:51:40,600 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:51:40,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:51:40,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:51:40,606 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:51:40,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:51:40" (1/1) ... [2018-11-07 02:51:40,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6bed07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:40, skipping insertion in model container [2018-11-07 02:51:40,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:51:40" (1/1) ... [2018-11-07 02:51:40,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:51:40,705 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:51:41,494 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:51:41,500 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:51:41,695 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:51:41,716 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:51:41,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:41 WrapperNode [2018-11-07 02:51:41,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:51:41,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:51:41,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:51:41,718 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:51:41,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:41" (1/1) ... [2018-11-07 02:51:41,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:41" (1/1) ... [2018-11-07 02:51:41,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:51:41,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:51:41,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:51:41,877 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:51:41,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:41" (1/1) ... [2018-11-07 02:51:41,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:41" (1/1) ... [2018-11-07 02:51:41,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:41" (1/1) ... [2018-11-07 02:51:41,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:41" (1/1) ... [2018-11-07 02:51:41,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:41" (1/1) ... [2018-11-07 02:51:42,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:41" (1/1) ... [2018-11-07 02:51:42,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:41" (1/1) ... [2018-11-07 02:51:42,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:51:42,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:51:42,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:51:42,036 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:51:42,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:41" (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 02:51:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:51:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:51:42,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:51:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:51:42,124 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:51:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:51:42,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:51:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:51:42,125 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:51:46,918 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:51:46,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:51:46 BoogieIcfgContainer [2018-11-07 02:51:46,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:51:46,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:51:46,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:51:46,924 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:51:46,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:51:40" (1/3) ... [2018-11-07 02:51:46,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d47dfd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:51:46, skipping insertion in model container [2018-11-07 02:51:46,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:51:41" (2/3) ... [2018-11-07 02:51:46,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d47dfd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:51:46, skipping insertion in model container [2018-11-07 02:51:46,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:51:46" (3/3) ... [2018-11-07 02:51:46,929 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label03_true-unreach-call.c [2018-11-07 02:51:46,938 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:51:46,947 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:51:46,965 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:51:47,005 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:51:47,005 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:51:47,006 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:51:47,006 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:51:47,006 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:51:47,006 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:51:47,006 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:51:47,006 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:51:47,037 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 02:51:47,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-07 02:51:47,045 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:51:47,046 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] [2018-11-07 02:51:47,049 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:51:47,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:51:47,055 INFO L82 PathProgramCache]: Analyzing trace with hash -509521591, now seen corresponding path program 1 times [2018-11-07 02:51:47,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:51:47,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:47,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:51:47,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:47,107 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:51:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:51:47,540 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 02:51:47,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:51:47,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:51:47,544 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:51:47,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:51:47,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:51:47,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:51:47,577 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 02:51:51,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:51:51,285 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-11-07 02:51:51,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:51:51,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-11-07 02:51:51,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:51:51,312 INFO L225 Difference]: With dead ends: 985 [2018-11-07 02:51:51,312 INFO L226 Difference]: Without dead ends: 686 [2018-11-07 02:51:51,322 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:51:51,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-11-07 02:51:51,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-11-07 02:51:51,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-11-07 02:51:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-11-07 02:51:51,432 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 37 [2018-11-07 02:51:51,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:51:51,433 INFO L480 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-11-07 02:51:51,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:51:51,433 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-11-07 02:51:51,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-07 02:51:51,440 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:51:51,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:51:51,441 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:51:51,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:51:51,441 INFO L82 PathProgramCache]: Analyzing trace with hash -484596469, now seen corresponding path program 1 times [2018-11-07 02:51:51,442 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:51:51,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:51,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:51:51,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:51,443 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:51:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:51:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:51:51,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:51:51,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:51:51,794 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:51:51,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:51:51,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:51:51,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:51:51,797 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-11-07 02:51:56,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:51:56,966 INFO L93 Difference]: Finished difference Result 2340 states and 3735 transitions. [2018-11-07 02:51:56,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:51:56,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-11-07 02:51:56,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:51:56,988 INFO L225 Difference]: With dead ends: 2340 [2018-11-07 02:51:56,989 INFO L226 Difference]: Without dead ends: 1660 [2018-11-07 02:51:56,994 INFO L604 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 [2018-11-07 02:51:56,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2018-11-07 02:51:57,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1641. [2018-11-07 02:51:57,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2018-11-07 02:51:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2354 transitions. [2018-11-07 02:51:57,083 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2354 transitions. Word has length 118 [2018-11-07 02:51:57,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:51:57,084 INFO L480 AbstractCegarLoop]: Abstraction has 1641 states and 2354 transitions. [2018-11-07 02:51:57,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:51:57,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2354 transitions. [2018-11-07 02:51:57,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 02:51:57,091 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:51:57,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:51:57,091 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:51:57,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:51:57,097 INFO L82 PathProgramCache]: Analyzing trace with hash 984101383, now seen corresponding path program 1 times [2018-11-07 02:51:57,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:51:57,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:57,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:51:57,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:57,099 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:51:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:51:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:51:57,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:51:57,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:51:57,359 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:51:57,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:51:57,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:51:57,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:51:57,360 INFO L87 Difference]: Start difference. First operand 1641 states and 2354 transitions. Second operand 4 states. [2018-11-07 02:51:59,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:51:59,761 INFO L93 Difference]: Finished difference Result 6063 states and 9064 transitions. [2018-11-07 02:51:59,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:51:59,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-11-07 02:51:59,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:51:59,797 INFO L225 Difference]: With dead ends: 6063 [2018-11-07 02:51:59,798 INFO L226 Difference]: Without dead ends: 4428 [2018-11-07 02:51:59,814 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:51:59,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2018-11-07 02:51:59,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4407. [2018-11-07 02:51:59,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4407 states. [2018-11-07 02:51:59,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4407 states to 4407 states and 6087 transitions. [2018-11-07 02:51:59,959 INFO L78 Accepts]: Start accepts. Automaton has 4407 states and 6087 transitions. Word has length 132 [2018-11-07 02:51:59,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:51:59,960 INFO L480 AbstractCegarLoop]: Abstraction has 4407 states and 6087 transitions. [2018-11-07 02:51:59,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:51:59,960 INFO L276 IsEmpty]: Start isEmpty. Operand 4407 states and 6087 transitions. [2018-11-07 02:51:59,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-11-07 02:51:59,974 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:51:59,974 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:51:59,975 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:51:59,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:51:59,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1801051533, now seen corresponding path program 1 times [2018-11-07 02:51:59,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:51:59,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:59,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:51:59,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:51:59,977 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:52:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:52:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 02:52:00,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:52:00,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 02:52:00,316 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:52:00,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 02:52:00,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 02:52:00,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:52:00,318 INFO L87 Difference]: Start difference. First operand 4407 states and 6087 transitions. Second operand 3 states. [2018-11-07 02:52:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:52:02,307 INFO L93 Difference]: Finished difference Result 10338 states and 14849 transitions. [2018-11-07 02:52:02,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 02:52:02,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2018-11-07 02:52:02,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:52:02,349 INFO L225 Difference]: With dead ends: 10338 [2018-11-07 02:52:02,350 INFO L226 Difference]: Without dead ends: 6126 [2018-11-07 02:52:02,376 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:52:02,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2018-11-07 02:52:02,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 5671. [2018-11-07 02:52:02,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5671 states. [2018-11-07 02:52:02,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 8017 transitions. [2018-11-07 02:52:02,528 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 8017 transitions. Word has length 235 [2018-11-07 02:52:02,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:52:02,529 INFO L480 AbstractCegarLoop]: Abstraction has 5671 states and 8017 transitions. [2018-11-07 02:52:02,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 02:52:02,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 8017 transitions. [2018-11-07 02:52:02,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-11-07 02:52:02,549 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:52:02,549 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:52:02,550 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:52:02,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:52:02,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1791653501, now seen corresponding path program 1 times [2018-11-07 02:52:02,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:52:02,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:52:02,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:52:02,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:52:02,552 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:52:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:52:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 246 proven. 76 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 02:52:02,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:52:02,970 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:52:02,971 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 315 with the following transitions: [2018-11-07 02:52:02,973 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [530], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 02:52:03,053 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:52:03,054 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:52:04,887 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:52:45,855 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 02:52:45,857 INFO L272 AbstractInterpreter]: Visited 127 different actions 865 times. Merged at 7 different actions 44 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 02:52:45,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:52:45,873 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 02:52:45,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:52:45,873 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 02:52:45,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:52:45,883 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 02:52:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:52:46,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 02:52:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 02:52:46,495 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 02:52:46,743 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 02:52:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 02:52:47,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 02:52:47,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 02:52:47,344 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 02:52:47,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 02:52:47,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 02:52:47,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-11-07 02:52:47,345 INFO L87 Difference]: Start difference. First operand 5671 states and 8017 transitions. Second operand 9 states. [2018-11-07 02:52:50,520 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 02:52:56,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:52:56,162 INFO L93 Difference]: Finished difference Result 19338 states and 30212 transitions. [2018-11-07 02:52:56,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 02:52:56,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 314 [2018-11-07 02:52:56,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:52:56,259 INFO L225 Difference]: With dead ends: 19338 [2018-11-07 02:52:56,259 INFO L226 Difference]: Without dead ends: 13862 [2018-11-07 02:52:56,321 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 648 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=289, Invalid=971, Unknown=0, NotChecked=0, Total=1260 [2018-11-07 02:52:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13862 states. [2018-11-07 02:52:56,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13862 to 13661. [2018-11-07 02:52:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13661 states. [2018-11-07 02:52:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13661 states to 13661 states and 18198 transitions. [2018-11-07 02:52:56,749 INFO L78 Accepts]: Start accepts. Automaton has 13661 states and 18198 transitions. Word has length 314 [2018-11-07 02:52:56,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:52:56,750 INFO L480 AbstractCegarLoop]: Abstraction has 13661 states and 18198 transitions. [2018-11-07 02:52:56,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 02:52:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 13661 states and 18198 transitions. [2018-11-07 02:52:56,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-07 02:52:56,837 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:52:56,837 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:52:56,838 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:52:56,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:52:56,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1723905372, now seen corresponding path program 1 times [2018-11-07 02:52:56,839 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:52:56,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:52:56,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:52:56,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:52:56,840 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:52:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:52:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-11-07 02:52:57,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:52:57,389 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:52:57,389 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-11-07 02:52:57,390 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [530], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [997], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 02:52:57,409 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:52:57,409 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:52:59,203 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:53:28,587 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:53:28,587 INFO L272 AbstractInterpreter]: Visited 186 different actions 544 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 02:53:28,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:53:28,592 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:53:35,345 INFO L227 lantSequenceWeakener]: Weakened 47 states. On average, predicates are now at 74.88% of their original sizes. [2018-11-07 02:53:35,345 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:55:43,006 INFO L415 sIntCurrentIteration]: We unified 423 AI predicates to 423 [2018-11-07 02:55:43,007 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:55:43,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:55:43,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [4] total 23 [2018-11-07 02:55:43,008 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:55:43,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 02:55:43,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 02:55:43,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2018-11-07 02:55:43,009 INFO L87 Difference]: Start difference. First operand 13661 states and 18198 transitions. Second operand 21 states. Received shutdown request... [2018-11-07 02:55:45,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 02:55:45,494 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:55:45,499 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:55:45,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:55:45 BoogieIcfgContainer [2018-11-07 02:55:45,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:55:45,500 INFO L168 Benchmark]: Toolchain (without parser) took 244900.74 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -74.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 02:55:45,506 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-07 02:55:45,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1115.51 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-11-07 02:55:45,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 159.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -845.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 02:55:45,509 INFO L168 Benchmark]: Boogie Preprocessor took 157.91 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:55:45,509 INFO L168 Benchmark]: RCFGBuilder took 4884.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 170.6 MB). Peak memory consumption was 170.6 MB. Max. memory is 7.1 GB. [2018-11-07 02:55:45,510 INFO L168 Benchmark]: TraceAbstraction took 238578.93 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 548.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 02:55:45,515 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1115.51 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 159.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -845.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.91 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4884.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 170.6 MB). Peak memory consumption was 170.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238578.93 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 548.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 96). Cancelled while BasicCegarLoop was constructing difference of abstraction (13661states) and FLOYD_HOARE automaton (currently 5 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (7 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 238.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 24.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1004 SDtfs, 4712 SDslu, 917 SDs, 0 SdLazy, 8038 SolverSat, 2246 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1132 GetRequests, 950 SyntacticMatches, 118 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 128.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13661occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 74.1s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9968416575981592 AbsIntWeakeningRatio, 0.0851063829787234 AbsIntAvgWeakeningVarsNumRemoved, 972.6170212765958 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 696 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1574 NumberOfCodeBlocks, 1574 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1880 ConstructedInterpolants, 0 QuantifiedInterpolants, 1040689 SizeOfPredicates, 1 NumberOfNonLiveVariables, 556 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 1484/1566 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown