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/Problem14_label34_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:31:20,034 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:31:20,038 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:31:20,055 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:31:20,055 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:31:20,058 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:31:20,059 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:31:20,061 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:31:20,062 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:31:20,063 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:31:20,064 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:31:20,064 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:31:20,065 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:31:20,066 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:31:20,068 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:31:20,068 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:31:20,069 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:31:20,071 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:31:20,073 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:31:20,074 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:31:20,075 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:31:20,076 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:31:20,079 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:31:20,079 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:31:20,079 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:31:20,080 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:31:20,081 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:31:20,082 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:31:20,082 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:31:20,083 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:31:20,084 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:31:20,084 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:31:20,084 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:31:20,085 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:31:20,086 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:31:20,086 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:31:20,087 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 11:31:20,102 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:31:20,102 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:31:20,103 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:31:20,103 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:31:20,103 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:31:20,103 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:31:20,104 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:31:20,104 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:31:20,104 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:31:20,104 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:31:20,104 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:31:20,104 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:31:20,105 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:31:20,105 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:31:20,105 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:31:20,106 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:31:20,106 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:31:20,106 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:31:20,106 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:31:20,106 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:31:20,107 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:31:20,107 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:31:20,107 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:31:20,107 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:31:20,107 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:31:20,108 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:31:20,108 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:31:20,109 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:31:20,109 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:31:20,109 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:31:20,109 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:31:20,109 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:31:20,110 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:31:20,110 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:31:20,167 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:31:20,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:31:20,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:31:20,185 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:31:20,185 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:31:20,186 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label34_false-unreach-call_false-termination.c [2018-10-27 11:31:20,244 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e6cbf6315/852b4f8c3e4e4ae2a124ff63b3455cf7/FLAG1a876b622 [2018-10-27 11:31:20,862 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:31:20,866 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label34_false-unreach-call_false-termination.c [2018-10-27 11:31:20,883 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e6cbf6315/852b4f8c3e4e4ae2a124ff63b3455cf7/FLAG1a876b622 [2018-10-27 11:31:20,902 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e6cbf6315/852b4f8c3e4e4ae2a124ff63b3455cf7 [2018-10-27 11:31:20,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:31:20,916 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:31:20,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:31:20,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:31:20,923 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:31:20,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:31:20" (1/1) ... [2018-10-27 11:31:20,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b071f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:31:20, skipping insertion in model container [2018-10-27 11:31:20,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:31:20" (1/1) ... [2018-10-27 11:31:20,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:31:21,030 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:31:21,574 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:31:21,579 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:31:21,755 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:31:21,789 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:31:21,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:31:21 WrapperNode [2018-10-27 11:31:21,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:31:21,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:31:21,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:31:21,791 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:31:21,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:31:21" (1/1) ... [2018-10-27 11:31:21,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:31:21" (1/1) ... [2018-10-27 11:31:22,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:31:22,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:31:22,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:31:22,025 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:31:22,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:31:21" (1/1) ... [2018-10-27 11:31:22,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:31:21" (1/1) ... [2018-10-27 11:31:22,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:31:21" (1/1) ... [2018-10-27 11:31:22,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:31:21" (1/1) ... [2018-10-27 11:31:22,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:31:21" (1/1) ... [2018-10-27 11:31:22,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:31:21" (1/1) ... [2018-10-27 11:31:22,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:31:21" (1/1) ... [2018-10-27 11:31:22,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:31:22,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:31:22,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:31:22,135 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:31:22,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:31:21" (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 11:31:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:31:22,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:31:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:31:22,218 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:31:22,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:31:22,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:31:22,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:31:22,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:31:26,146 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:31:26,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:31:26 BoogieIcfgContainer [2018-10-27 11:31:26,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:31:26,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:31:26,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:31:26,152 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:31:26,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:31:20" (1/3) ... [2018-10-27 11:31:26,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e009038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:31:26, skipping insertion in model container [2018-10-27 11:31:26,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:31:21" (2/3) ... [2018-10-27 11:31:26,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e009038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:31:26, skipping insertion in model container [2018-10-27 11:31:26,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:31:26" (3/3) ... [2018-10-27 11:31:26,159 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label34_false-unreach-call_false-termination.c [2018-10-27 11:31:26,170 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:31:26,179 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:31:26,198 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:31:26,238 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:31:26,239 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:31:26,239 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:31:26,239 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:31:26,239 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:31:26,240 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:31:26,240 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:31:26,240 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:31:26,269 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 11:31:26,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-27 11:31:26,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:31:26,279 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] [2018-10-27 11:31:26,281 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:31:26,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:31:26,288 INFO L82 PathProgramCache]: Analyzing trace with hash 457799444, now seen corresponding path program 1 times [2018-10-27 11:31:26,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:31:26,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:31:26,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:31:26,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:31:26,345 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:31:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:31:26,717 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-27 11:31:26,731 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 11:31:26,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:31:26,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:31:26,741 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:31:26,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:31:26,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:31:26,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:31:26,770 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-27 11:31:30,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:31:30,288 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-10-27 11:31:30,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:31:30,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-10-27 11:31:30,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:31:30,316 INFO L225 Difference]: With dead ends: 894 [2018-10-27 11:31:30,317 INFO L226 Difference]: Without dead ends: 633 [2018-10-27 11:31:30,326 INFO L605 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 [2018-10-27 11:31:30,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-27 11:31:30,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-10-27 11:31:30,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-10-27 11:31:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-10-27 11:31:30,427 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 34 [2018-10-27 11:31:30,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:31:30,427 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-10-27 11:31:30,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:31:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-10-27 11:31:30,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-27 11:31:30,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:31:30,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:31:30,438 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:31:30,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:31:30,439 INFO L82 PathProgramCache]: Analyzing trace with hash 610303147, now seen corresponding path program 1 times [2018-10-27 11:31:30,439 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:31:30,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:31:30,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:31:30,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:31:30,441 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:31:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:31:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:31:30,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:31:30,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:31:30,852 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:31:30,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:31:30,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:31:30,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:31:30,856 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-10-27 11:31:34,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:31:34,499 INFO L93 Difference]: Finished difference Result 2170 states and 3670 transitions. [2018-10-27 11:31:34,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:31:34,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2018-10-27 11:31:34,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:31:34,515 INFO L225 Difference]: With dead ends: 2170 [2018-10-27 11:31:34,515 INFO L226 Difference]: Without dead ends: 1543 [2018-10-27 11:31:34,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:31:34,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2018-10-27 11:31:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2018-10-27 11:31:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2018-10-27 11:31:34,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2368 transitions. [2018-10-27 11:31:34,625 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2368 transitions. Word has length 147 [2018-10-27 11:31:34,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:31:34,626 INFO L481 AbstractCegarLoop]: Abstraction has 1543 states and 2368 transitions. [2018-10-27 11:31:34,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:31:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2368 transitions. [2018-10-27 11:31:34,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-27 11:31:34,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:31:34,649 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 11:31:34,650 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:31:34,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:31:34,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1882907655, now seen corresponding path program 1 times [2018-10-27 11:31:34,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:31:34,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:31:34,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:31:34,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:31:34,652 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:31:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:31:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:31:35,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:31:35,437 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:31:35,438 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-10-27 11:31:35,441 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [786], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 11:31:35,495 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:31:35,495 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:31:36,228 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:31:36,230 INFO L272 AbstractInterpreter]: Visited 148 different actions 148 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 11:31:36,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:31:36,273 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:31:36,875 INFO L227 lantSequenceWeakener]: Weakened 252 states. On average, predicates are now at 77.55% of their original sizes. [2018-10-27 11:31:36,875 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:31:37,246 INFO L415 sIntCurrentIteration]: We unified 260 AI predicates to 260 [2018-10-27 11:31:37,247 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:31:37,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:31:37,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 11:31:37,252 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:31:37,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 11:31:37,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 11:31:37,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 11:31:37,254 INFO L87 Difference]: Start difference. First operand 1543 states and 2368 transitions. Second operand 7 states. [2018-10-27 11:31:39,507 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