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/Problem15_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:34:16,856 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:34:16,859 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:34:16,876 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:34:16,877 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:34:16,878 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:34:16,879 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:34:16,881 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:34:16,882 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:34:16,883 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:34:16,884 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:34:16,885 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:34:16,886 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:34:16,887 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:34:16,888 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:34:16,889 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:34:16,890 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:34:16,891 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:34:16,893 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:34:16,895 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:34:16,896 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:34:16,901 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:34:16,906 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:34:16,906 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:34:16,906 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:34:16,907 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:34:16,908 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:34:16,910 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:34:16,911 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:34:16,914 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:34:16,915 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:34:16,916 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:34:16,916 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:34:16,918 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:34:16,919 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:34:16,921 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:34:16,921 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 03:34:16,955 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:34:16,955 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:34:16,959 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:34:16,959 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:34:16,959 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:34:16,960 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:34:16,960 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:34:16,960 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:34:16,960 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:34:16,960 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:34:16,961 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:34:16,961 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:34:16,962 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:34:16,963 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:34:16,963 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:34:16,963 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:34:16,963 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:34:16,963 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:34:16,963 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:34:16,964 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:34:16,964 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:34:16,964 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:34:16,964 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:34:16,964 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:34:16,966 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:34:16,966 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:34:16,966 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:34:16,966 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:34:16,967 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:34:16,967 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:34:16,967 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:34:16,967 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:34:16,967 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:34:16,967 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:34:17,018 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:34:17,031 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:34:17,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:34:17,036 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:34:17,036 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:34:17,037 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label19_true-unreach-call.c [2018-11-07 03:34:17,108 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409a2a0e7/d2bd9a185a12460f90bc650c8a8f9dbf/FLAGd555e3b9f [2018-11-07 03:34:17,772 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:34:17,773 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label19_true-unreach-call.c [2018-11-07 03:34:17,796 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409a2a0e7/d2bd9a185a12460f90bc650c8a8f9dbf/FLAGd555e3b9f [2018-11-07 03:34:17,815 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/409a2a0e7/d2bd9a185a12460f90bc650c8a8f9dbf [2018-11-07 03:34:17,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:34:17,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:34:17,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:34:17,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:34:17,835 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:34:17,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:34:17" (1/1) ... [2018-11-07 03:34:17,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9260898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:17, skipping insertion in model container [2018-11-07 03:34:17,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:34:17" (1/1) ... [2018-11-07 03:34:17,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:34:17,941 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:34:18,786 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:34:18,793 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:34:19,110 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:34:19,131 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:34:19,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:19 WrapperNode [2018-11-07 03:34:19,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:34:19,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:34:19,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:34:19,134 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:34:19,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:19" (1/1) ... [2018-11-07 03:34:19,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:19" (1/1) ... [2018-11-07 03:34:19,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:34:19,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:34:19,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:34:19,371 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:34:19,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:19" (1/1) ... [2018-11-07 03:34:19,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:19" (1/1) ... [2018-11-07 03:34:19,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:19" (1/1) ... [2018-11-07 03:34:19,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:19" (1/1) ... [2018-11-07 03:34:19,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:19" (1/1) ... [2018-11-07 03:34:19,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:19" (1/1) ... [2018-11-07 03:34:19,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:19" (1/1) ... [2018-11-07 03:34:19,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:34:19,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:34:19,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:34:19,566 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:34:19,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:19" (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 03:34:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:34:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:34:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:34:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:34:19,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:34:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:34:19,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:34:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:34:19,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:34:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:34:19,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:34:26,466 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:34:26,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:34:26 BoogieIcfgContainer [2018-11-07 03:34:26,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:34:26,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:34:26,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:34:26,472 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:34:26,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:34:17" (1/3) ... [2018-11-07 03:34:26,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca4856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:34:26, skipping insertion in model container [2018-11-07 03:34:26,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:34:19" (2/3) ... [2018-11-07 03:34:26,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca4856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:34:26, skipping insertion in model container [2018-11-07 03:34:26,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:34:26" (3/3) ... [2018-11-07 03:34:26,476 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label19_true-unreach-call.c [2018-11-07 03:34:26,485 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:34:26,494 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:34:26,512 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:34:26,554 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:34:26,554 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:34:26,554 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:34:26,554 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:34:26,555 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:34:26,555 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:34:26,555 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:34:26,555 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:34:26,588 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 03:34:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-07 03:34:26,599 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:34:26,601 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:34:26,603 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:34:26,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:34:26,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1227807684, now seen corresponding path program 1 times [2018-11-07 03:34:26,613 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:34:26,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:26,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:34:26,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:26,665 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:34:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:34:27,158 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 03:34:27,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:34:27,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:34:27,161 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:34:27,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:34:27,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:34:27,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:34:27,189 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 03:34:33,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:34:33,384 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 03:34:33,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:34:33,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-11-07 03:34:33,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:34:33,413 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 03:34:33,414 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 03:34:33,423 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 03:34:33,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 03:34:33,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-11-07 03:34:33,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-11-07 03:34:33,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-11-07 03:34:33,540 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 52 [2018-11-07 03:34:33,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:34:33,541 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-11-07 03:34:33,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:34:33,541 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-11-07 03:34:33,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-07 03:34:33,551 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:34:33,552 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:33,552 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:34:33,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:34:33,555 INFO L82 PathProgramCache]: Analyzing trace with hash -773066201, now seen corresponding path program 1 times [2018-11-07 03:34:33,555 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:34:33,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:33,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:34:33,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:33,557 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:34:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:34:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:34:33,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:34:33,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:34:33,979 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:34:33,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:34:33,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:34:33,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:34:33,983 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 5 states. [2018-11-07 03:34:42,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:34:42,555 INFO L93 Difference]: Finished difference Result 2506 states and 4577 transitions. [2018-11-07 03:34:42,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:34:42,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-11-07 03:34:42,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:34:42,577 INFO L225 Difference]: With dead ends: 2506 [2018-11-07 03:34:42,577 INFO L226 Difference]: Without dead ends: 1753 [2018-11-07 03:34:42,583 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:34:42,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2018-11-07 03:34:42,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1733. [2018-11-07 03:34:42,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-11-07 03:34:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 3007 transitions. [2018-11-07 03:34:42,698 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 3007 transitions. Word has length 122 [2018-11-07 03:34:42,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:34:42,699 INFO L480 AbstractCegarLoop]: Abstraction has 1733 states and 3007 transitions. [2018-11-07 03:34:42,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:34:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 3007 transitions. [2018-11-07 03:34:42,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-07 03:34:42,705 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:34:42,710 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:42,711 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:34:42,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:34:42,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1495807734, now seen corresponding path program 1 times [2018-11-07 03:34:42,712 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:34:42,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:42,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:34:42,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:42,714 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:34:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:34:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:34:43,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:34:43,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:34:43,259 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:34:43,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:34:43,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:34:43,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:34:43,260 INFO L87 Difference]: Start difference. First operand 1733 states and 3007 transitions. Second operand 6 states. [2018-11-07 03:34:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:34:50,110 INFO L93 Difference]: Finished difference Result 5656 states and 10490 transitions. [2018-11-07 03:34:50,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 03:34:50,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-11-07 03:34:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:34:50,148 INFO L225 Difference]: With dead ends: 5656 [2018-11-07 03:34:50,148 INFO L226 Difference]: Without dead ends: 3929 [2018-11-07 03:34:50,174 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:34:50,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2018-11-07 03:34:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3821. [2018-11-07 03:34:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3821 states. [2018-11-07 03:34:50,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 5796 transitions. [2018-11-07 03:34:50,309 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 5796 transitions. Word has length 123 [2018-11-07 03:34:50,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:34:50,310 INFO L480 AbstractCegarLoop]: Abstraction has 3821 states and 5796 transitions. [2018-11-07 03:34:50,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:34:50,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 5796 transitions. [2018-11-07 03:34:50,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 03:34:50,312 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:34:50,313 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:50,313 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:34:50,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:34:50,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1360707218, now seen corresponding path program 1 times [2018-11-07 03:34:50,314 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:34:50,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:50,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:34:50,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:50,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:34:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:34:50,547 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:34:50,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:34:50,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:34:50,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:34:50,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:34:50,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:34:50,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:34:50,550 INFO L87 Difference]: Start difference. First operand 3821 states and 5796 transitions. Second operand 6 states. [2018-11-07 03:34:55,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:34:55,661 INFO L93 Difference]: Finished difference Result 10738 states and 17556 transitions. [2018-11-07 03:34:55,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:34:55,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-11-07 03:34:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:34:55,713 INFO L225 Difference]: With dead ends: 10738 [2018-11-07 03:34:55,714 INFO L226 Difference]: Without dead ends: 7232 [2018-11-07 03:34:55,751 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 03:34:55,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7232 states. [2018-11-07 03:34:55,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7232 to 7179. [2018-11-07 03:34:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7179 states. [2018-11-07 03:34:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7179 states to 7179 states and 10373 transitions. [2018-11-07 03:34:55,966 INFO L78 Accepts]: Start accepts. Automaton has 7179 states and 10373 transitions. Word has length 127 [2018-11-07 03:34:55,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:34:55,966 INFO L480 AbstractCegarLoop]: Abstraction has 7179 states and 10373 transitions. [2018-11-07 03:34:55,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:34:55,967 INFO L276 IsEmpty]: Start isEmpty. Operand 7179 states and 10373 transitions. [2018-11-07 03:34:55,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-11-07 03:34:55,970 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:34:55,970 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:55,971 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:34:55,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:34:55,971 INFO L82 PathProgramCache]: Analyzing trace with hash -507052443, now seen corresponding path program 1 times [2018-11-07 03:34:55,971 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:34:55,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:55,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:34:55,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:55,973 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:34:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:34:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:34:56,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:34:56,519 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:34:56,520 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 149 with the following transitions: [2018-11-07 03:34:56,522 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:34:56,589 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:34:56,590 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:34:58,431 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:35:04,781 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 03:35:04,783 INFO L272 AbstractInterpreter]: Visited 104 different actions 298 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:35:04,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:35:04,804 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 03:35:04,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:35:04,805 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 03:35:04,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:35:04,815 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 03:35:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:35:04,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 03:35:08,575 WARN L179 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 37 [2018-11-07 03:35:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:35:10,551 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 03:35:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:35:10,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 03:35:10,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-11-07 03:35:10,917 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:35:10,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:35:10,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:35:10,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-11-07 03:35:10,918 INFO L87 Difference]: Start difference. First operand 7179 states and 10373 transitions. Second operand 3 states. [2018-11-07 03:35:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:35:14,003 INFO L93 Difference]: Finished difference Result 17953 states and 27078 transitions. [2018-11-07 03:35:14,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:35:14,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2018-11-07 03:35:14,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:35:14,112 INFO L225 Difference]: With dead ends: 17953 [2018-11-07 03:35:14,112 INFO L226 Difference]: Without dead ends: 11089 [2018-11-07 03:35:14,204 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 292 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-11-07 03:35:14,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11089 states. [2018-11-07 03:35:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11089 to 11087. [2018-11-07 03:35:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11087 states. [2018-11-07 03:35:14,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11087 states to 11087 states and 15327 transitions. [2018-11-07 03:35:14,548 INFO L78 Accepts]: Start accepts. Automaton has 11087 states and 15327 transitions. Word has length 148 [2018-11-07 03:35:14,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:35:14,549 INFO L480 AbstractCegarLoop]: Abstraction has 11087 states and 15327 transitions. [2018-11-07 03:35:14,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:35:14,549 INFO L276 IsEmpty]: Start isEmpty. Operand 11087 states and 15327 transitions. [2018-11-07 03:35:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-07 03:35:14,559 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:35:14,559 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:14,560 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:35:14,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:35:14,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1797896167, now seen corresponding path program 1 times [2018-11-07 03:35:14,560 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:35:14,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:35:14,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:35:14,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:35:14,562 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:35:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:35:15,159 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-11-07 03:35:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:35:15,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:35:15,490 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:35:15,491 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-11-07 03:35:15,491 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1056], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:35:15,504 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:35:15,504 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:35:18,830 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:35:19,005 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:35:19,005 INFO L272 AbstractInterpreter]: Visited 172 different actions 172 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:35:19,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:35:19,040 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:35:20,817 INFO L227 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 78.05% of their original sizes. [2018-11-07 03:35:20,817 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:35:21,406 INFO L415 sIntCurrentIteration]: We unified 219 AI predicates to 219 [2018-11-07 03:35:21,407 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:35:21,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:35:21,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-07 03:35:21,408 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:35:21,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 03:35:21,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 03:35:21,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:35:21,409 INFO L87 Difference]: Start difference. First operand 11087 states and 15327 transitions. Second operand 8 states. [2018-11-07 03:36:45,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:36:45,371 INFO L93 Difference]: Finished difference Result 21861 states and 30312 transitions. [2018-11-07 03:36:45,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:36:45,371 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 220 [2018-11-07 03:36:45,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:36:45,430 INFO L225 Difference]: With dead ends: 21861 [2018-11-07 03:36:45,430 INFO L226 Difference]: Without dead ends: 11088 [2018-11-07 03:36:45,467 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 221 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:36:45,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11088 states. [2018-11-07 03:36:45,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11088 to 11079. [2018-11-07 03:36:45,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11079 states. [2018-11-07 03:36:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11079 states to 11079 states and 15277 transitions. [2018-11-07 03:36:45,771 INFO L78 Accepts]: Start accepts. Automaton has 11079 states and 15277 transitions. Word has length 220 [2018-11-07 03:36:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:36:45,772 INFO L480 AbstractCegarLoop]: Abstraction has 11079 states and 15277 transitions. [2018-11-07 03:36:45,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 03:36:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand 11079 states and 15277 transitions. [2018-11-07 03:36:45,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-11-07 03:36:45,785 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:36:45,786 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, 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] [2018-11-07 03:36:45,786 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:36:45,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:36:45,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1909686646, now seen corresponding path program 1 times [2018-11-07 03:36:45,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:36:45,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:36:45,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:36:45,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:36:45,788 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:36:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:36:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 91 proven. 89 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 03:36:46,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:36:46,511 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:36:46,511 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 278 with the following transitions: [2018-11-07 03:36:46,512 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [872], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:36:46,518 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:36:46,518 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:36:47,971 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:36:57,342 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 03:36:57,342 INFO L272 AbstractInterpreter]: Visited 138 different actions 400 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:36:57,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:36:57,348 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 03:36:57,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:36:57,348 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 03:36:57,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:36:57,359 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 03:36:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:36:57,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 03:36:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 03:36:57,592 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 03:36:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 03:36:58,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 03:36:58,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-11-07 03:36:58,542 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:36:58,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:36:58,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:36:58,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:36:58,543 INFO L87 Difference]: Start difference. First operand 11079 states and 15277 transitions. Second operand 5 states. [2018-11-07 03:37:02,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:37:02,195 INFO L93 Difference]: Finished difference Result 24031 states and 34316 transitions. [2018-11-07 03:37:02,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 03:37:02,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2018-11-07 03:37:02,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:37:02,247 INFO L225 Difference]: With dead ends: 24031 [2018-11-07 03:37:02,247 INFO L226 Difference]: Without dead ends: 9239 [2018-11-07 03:37:02,319 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 552 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:37:02,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9239 states. [2018-11-07 03:37:02,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9239 to 7660. [2018-11-07 03:37:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7660 states. [2018-11-07 03:37:02,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7660 states to 7660 states and 9351 transitions. [2018-11-07 03:37:02,546 INFO L78 Accepts]: Start accepts. Automaton has 7660 states and 9351 transitions. Word has length 277 [2018-11-07 03:37:02,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:37:02,546 INFO L480 AbstractCegarLoop]: Abstraction has 7660 states and 9351 transitions. [2018-11-07 03:37:02,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:37:02,546 INFO L276 IsEmpty]: Start isEmpty. Operand 7660 states and 9351 transitions. [2018-11-07 03:37:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-11-07 03:37:02,553 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:37:02,553 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:02,553 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:37:02,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:37:02,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2141796424, now seen corresponding path program 1 times [2018-11-07 03:37:02,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:37:02,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:37:02,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:37:02,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:37:02,555 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:37:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:37:03,230 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-11-07 03:37:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:37:03,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:37:03,670 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:37:03,671 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 291 with the following transitions: [2018-11-07 03:37:03,671 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1378], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:37:03,685 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:37:03,685 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:37:07,843 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:37:28,386 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 03:37:28,386 INFO L272 AbstractInterpreter]: Visited 246 different actions 724 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:37:28,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:37:28,394 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 03:37:28,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:37:28,394 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 03:37:28,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:37:28,404 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 03:37:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:37:28,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 03:37:30,615 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 38 [2018-11-07 03:37:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:37:30,733 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 03:37:31,261 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2018-11-07 03:37:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:37:32,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 03:37:32,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-11-07 03:37:32,368 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:37:32,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:37:32,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:37:32,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 03:37:32,370 INFO L87 Difference]: Start difference. First operand 7660 states and 9351 transitions. Second operand 6 states. [2018-11-07 03:37:37,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:37:37,863 INFO L93 Difference]: Finished difference Result 19171 states and 24212 transitions. [2018-11-07 03:37:37,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 03:37:37,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 290 [2018-11-07 03:37:37,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:37:37,920 INFO L225 Difference]: With dead ends: 19171 [2018-11-07 03:37:37,921 INFO L226 Difference]: Without dead ends: 11509 [2018-11-07 03:37:37,946 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 575 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 03:37:37,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11509 states. [2018-11-07 03:37:38,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11509 to 10816. [2018-11-07 03:37:38,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10816 states. [2018-11-07 03:37:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10816 states to 10816 states and 13707 transitions. [2018-11-07 03:37:38,235 INFO L78 Accepts]: Start accepts. Automaton has 10816 states and 13707 transitions. Word has length 290 [2018-11-07 03:37:38,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:37:38,235 INFO L480 AbstractCegarLoop]: Abstraction has 10816 states and 13707 transitions. [2018-11-07 03:37:38,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:37:38,236 INFO L276 IsEmpty]: Start isEmpty. Operand 10816 states and 13707 transitions. [2018-11-07 03:37:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-11-07 03:37:38,248 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:37:38,248 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:37:38,249 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:37:38,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:37:38,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1530309236, now seen corresponding path program 1 times [2018-11-07 03:37:38,249 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:37:38,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:37:38,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:37:38,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:37:38,251 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:37:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:37:38,847 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:37:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 85 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:37:40,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:37:40,006 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:37:40,007 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 440 with the following transitions: [2018-11-07 03:37:40,007 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:37:40,016 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:37:40,016 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:37:49,111 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 03:37:51,220 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 03:37:51,221 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 03:37:51,221 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 03:37:51,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:37:51,221 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 03:37:51,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:37:51,231 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 03:37:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:37:51,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 03:37:51,398 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 03:37:51,600 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 03:37:51,600 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:37:51,606 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:37:51,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:37:51 BoogieIcfgContainer [2018-11-07 03:37:51,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:37:51,607 INFO L168 Benchmark]: Toolchain (without parser) took 213778.28 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -663.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 03:37:51,608 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 03:37:51,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1301.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 03:37:51,609 INFO L168 Benchmark]: Boogie Procedure Inliner took 236.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -907.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:37:51,610 INFO L168 Benchmark]: Boogie Preprocessor took 194.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:37:51,611 INFO L168 Benchmark]: RCFGBuilder took 6902.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 306.1 MB). Peak memory consumption was 306.1 MB. Max. memory is 7.1 GB. [2018-11-07 03:37:51,612 INFO L168 Benchmark]: TraceAbstraction took 205138.23 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 03:37:51,617 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 1301.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 236.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -907.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 194.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6902.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 306.1 MB). Peak memory consumption was 306.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205138.23 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was analyzing trace of length 440 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 205.0s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 123.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2079 SDtfs, 9038 SDslu, 1714 SDs, 0 SdLazy, 16360 SolverSat, 3973 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1711 GetRequests, 1644 SyntacticMatches, 9 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11087occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 58.6s AbstIntTime, 5 AbstIntIterations, 1 AbstIntStrong, 0.9961700086030046 AbsIntWeakeningRatio, 0.091324200913242 AbsIntAvgWeakeningVarsNumRemoved, 904.0593607305937 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 2819 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 2074 NumberOfCodeBlocks, 2074 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2775 ConstructedInterpolants, 291 QuantifiedInterpolants, 4943768 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1178 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 700/1008 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown