java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:32:53,061 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:32:53,063 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:32:53,076 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:32:53,076 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:32:53,078 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:32:53,079 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:32:53,081 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:32:53,083 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:32:53,084 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:32:53,087 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:32:53,087 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:32:53,088 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:32:53,090 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:32:53,091 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:32:53,092 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:32:53,101 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:32:53,103 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:32:53,108 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:32:53,112 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:32:53,113 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:32:53,116 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:32:53,122 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:32:53,123 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:32:53,123 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:32:53,124 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:32:53,125 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:32:53,130 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:32:53,131 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:32:53,132 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:32:53,132 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:32:53,133 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:32:53,135 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:32:53,135 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:32:53,136 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:32:53,137 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:32:53,138 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:32:53,169 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:32:53,169 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:32:53,170 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:32:53,171 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:32:53,171 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:32:53,171 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:32:53,171 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:32:53,171 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:32:53,172 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:32:53,172 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:32:53,172 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:32:53,172 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:32:53,173 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:32:53,173 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:32:53,173 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:32:53,173 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:32:53,174 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:32:53,174 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:32:53,174 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:32:53,174 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:32:53,174 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:32:53,175 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:32:53,175 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:32:53,175 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:32:53,175 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:32:53,175 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:32:53,175 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:32:53,176 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:32:53,176 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:32:53,176 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:32:53,176 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:32:53,176 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:32:53,177 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:32:53,177 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:32:53,227 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:32:53,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:32:53,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:32:53,250 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:32:53,251 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:32:53,252 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c [2018-10-27 14:32:53,314 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cb1b314e0/697c5098c3854bdd9a223810f31a2281/FLAG33353375b [2018-10-27 14:32:53,966 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:32:53,967 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c [2018-10-27 14:32:53,990 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cb1b314e0/697c5098c3854bdd9a223810f31a2281/FLAG33353375b [2018-10-27 14:32:54,005 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cb1b314e0/697c5098c3854bdd9a223810f31a2281 [2018-10-27 14:32:54,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:32:54,018 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:32:54,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:32:54,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:32:54,024 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:32:54,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:32:54" (1/1) ... [2018-10-27 14:32:54,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be7802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:54, skipping insertion in model container [2018-10-27 14:32:54,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:32:54" (1/1) ... [2018-10-27 14:32:54,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:32:54,145 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:32:54,979 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:32:54,984 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:32:55,285 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:32:55,310 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:32:55,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:55 WrapperNode [2018-10-27 14:32:55,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:32:55,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:32:55,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:32:55,312 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:32:55,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:55" (1/1) ... [2018-10-27 14:32:55,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:55" (1/1) ... [2018-10-27 14:32:55,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:32:55,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:32:55,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:32:55,708 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:32:55,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:55" (1/1) ... [2018-10-27 14:32:55,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:55" (1/1) ... [2018-10-27 14:32:55,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:55" (1/1) ... [2018-10-27 14:32:55,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:55" (1/1) ... [2018-10-27 14:32:55,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:55" (1/1) ... [2018-10-27 14:32:55,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:55" (1/1) ... [2018-10-27 14:32:55,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:55" (1/1) ... [2018-10-27 14:32:55,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:32:55,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:32:55,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:32:55,971 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:32:55,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:32:56,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:32:56,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:32:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:32:56,048 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:32:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:32:56,048 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:32:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:32:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:32:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:32:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:33:05,955 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:33:05,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:33:05 BoogieIcfgContainer [2018-10-27 14:33:05,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:33:05,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:33:05,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:33:05,961 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:33:05,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:32:54" (1/3) ... [2018-10-27 14:33:05,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5839358b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:33:05, skipping insertion in model container [2018-10-27 14:33:05,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:32:55" (2/3) ... [2018-10-27 14:33:05,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5839358b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:33:05, skipping insertion in model container [2018-10-27 14:33:05,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:33:05" (3/3) ... [2018-10-27 14:33:05,965 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label12_true-unreach-call.c [2018-10-27 14:33:05,973 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:33:05,982 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:33:05,999 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:33:06,050 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:33:06,050 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:33:06,050 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:33:06,050 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:33:06,050 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:33:06,050 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:33:06,051 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:33:06,051 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:33:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 14:33:06,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-27 14:33:06,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:33:06,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:33:06,095 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:33:06,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:33:06,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1945844012, now seen corresponding path program 1 times [2018-10-27 14:33:06,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:33:06,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:33:06,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:33:06,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:33:06,158 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:33:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:33:06,688 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:33:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:33:06,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:33:06,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 14:33:06,823 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:33:06,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 14:33:06,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 14:33:06,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:33:06,849 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-27 14:33:14,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:33:14,741 INFO L93 Difference]: Finished difference Result 1192 states and 2147 transitions. [2018-10-27 14:33:14,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 14:33:14,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-10-27 14:33:14,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:33:14,774 INFO L225 Difference]: With dead ends: 1192 [2018-10-27 14:33:14,775 INFO L226 Difference]: Without dead ends: 752 [2018-10-27 14:33:14,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:33:14,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2018-10-27 14:33:15,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2018-10-27 14:33:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-10-27 14:33:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1322 transitions. [2018-10-27 14:33:15,074 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1322 transitions. Word has length 66 [2018-10-27 14:33:15,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:33:15,076 INFO L481 AbstractCegarLoop]: Abstraction has 752 states and 1322 transitions. [2018-10-27 14:33:15,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 14:33:15,076 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1322 transitions. [2018-10-27 14:33:15,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-27 14:33:15,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:33:15,093 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, 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] [2018-10-27 14:33:15,093 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:33:15,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:33:15,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1570917914, now seen corresponding path program 1 times [2018-10-27 14:33:15,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:33:15,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:33:15,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:33:15,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:33:15,096 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:33:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:33:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:33:15,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:33:15,653 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:33:15,654 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-10-27 14:33:15,657 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], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [501], [503], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 14:33:15,705 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:33:15,706 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:33:16,223 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:33:16,224 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 14:33:16,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:33:16,240 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:33:16,620 INFO L227 lantSequenceWeakener]: Weakened 141 states. On average, predicates are now at 78.81% of their original sizes. [2018-10-27 14:33:16,620 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:33:16,878 INFO L415 sIntCurrentIteration]: We unified 146 AI predicates to 146 [2018-10-27 14:33:16,878 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:33:16,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:33:16,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-27 14:33:16,880 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:33:16,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:33:16,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:33:16,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:33:16,883 INFO L87 Difference]: Start difference. First operand 752 states and 1322 transitions. Second operand 6 states. [2018-10-27 14:33:18,997 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown