java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label46_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:20:25,239 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:20:25,242 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:20:25,259 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:20:25,259 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:20:25,261 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:20:25,262 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:20:25,265 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:20:25,266 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:20:25,267 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:20:25,268 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:20:25,268 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:20:25,269 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:20:25,270 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:20:25,271 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:20:25,273 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:20:25,274 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:20:25,275 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:20:25,277 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:20:25,279 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:20:25,280 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:20:25,286 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:20:25,288 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:20:25,288 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:20:25,288 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:20:25,289 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:20:25,290 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:20:25,291 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:20:25,292 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:20:25,293 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:20:25,294 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:20:25,294 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 12:20:25,294 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:20:25,295 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:20:25,296 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:20:25,297 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:20:25,297 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 12:20:25,312 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:20:25,312 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:20:25,313 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:20:25,313 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:20:25,313 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:20:25,313 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:20:25,314 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:20:25,314 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:20:25,314 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:20:25,314 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:20:25,314 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:20:25,314 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:20:25,315 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:20:25,315 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:20:25,316 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:20:25,316 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:20:25,316 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:20:25,316 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:20:25,316 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:20:25,316 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:20:25,317 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:20:25,317 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:20:25,317 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:20:25,317 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:20:25,317 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:20:25,318 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:20:25,318 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:20:25,318 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:20:25,318 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:20:25,318 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:20:25,319 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:20:25,319 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:20:25,319 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:20:25,319 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:20:25,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:20:25,389 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:20:25,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:20:25,394 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:20:25,395 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:20:25,396 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label46_false-unreach-call.c [2018-11-07 12:20:25,457 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a518a2816/a814c0a85ec44708be66357c40cb43a3/FLAG8afdbade8 [2018-11-07 12:20:26,096 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:20:26,097 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label46_false-unreach-call.c [2018-11-07 12:20:26,120 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a518a2816/a814c0a85ec44708be66357c40cb43a3/FLAG8afdbade8 [2018-11-07 12:20:26,139 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a518a2816/a814c0a85ec44708be66357c40cb43a3 [2018-11-07 12:20:26,152 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:20:26,154 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:20:26,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:20:26,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:20:26,158 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:20:26,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:20:26" (1/1) ... [2018-11-07 12:20:26,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465fd05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:26, skipping insertion in model container [2018-11-07 12:20:26,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:20:26" (1/1) ... [2018-11-07 12:20:26,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:20:26,257 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:20:26,951 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:20:26,955 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:20:27,206 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:20:27,231 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:20:27,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:27 WrapperNode [2018-11-07 12:20:27,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:20:27,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:20:27,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:20:27,233 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:20:27,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:27" (1/1) ... [2018-11-07 12:20:27,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:27" (1/1) ... [2018-11-07 12:20:27,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:20:27,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:20:27,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:20:27,462 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:20:27,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:27" (1/1) ... [2018-11-07 12:20:27,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:27" (1/1) ... [2018-11-07 12:20:27,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:27" (1/1) ... [2018-11-07 12:20:27,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:27" (1/1) ... [2018-11-07 12:20:27,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:27" (1/1) ... [2018-11-07 12:20:27,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:27" (1/1) ... [2018-11-07 12:20:27,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:27" (1/1) ... [2018-11-07 12:20:27,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:20:27,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:20:27,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:20:27,611 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:20:27,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:27" (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 12:20:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:20:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:20:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:20:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 12:20:27,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 12:20:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:20:27,686 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:20:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:20:27,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:20:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:20:27,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:20:34,114 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:20:34,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:20:34 BoogieIcfgContainer [2018-11-07 12:20:34,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:20:34,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:20:34,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:20:34,120 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:20:34,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:20:26" (1/3) ... [2018-11-07 12:20:34,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4ce070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:20:34, skipping insertion in model container [2018-11-07 12:20:34,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:20:27" (2/3) ... [2018-11-07 12:20:34,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4ce070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:20:34, skipping insertion in model container [2018-11-07 12:20:34,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:20:34" (3/3) ... [2018-11-07 12:20:34,124 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label46_false-unreach-call.c [2018-11-07 12:20:34,133 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:20:34,142 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:20:34,160 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:20:34,203 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:20:34,203 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:20:34,204 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:20:34,204 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:20:34,204 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:20:34,204 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:20:34,204 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:20:34,205 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:20:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 12:20:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-07 12:20:34,247 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:20:34,248 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] [2018-11-07 12:20:34,250 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:20:34,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:20:34,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1596668835, now seen corresponding path program 1 times [2018-11-07 12:20:34,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:20:34,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:34,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:20:34,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:34,318 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:20:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:20:34,715 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:20:34,799 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 12:20:34,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:20:34,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:20:34,802 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:20:34,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:20:34,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:20:34,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:20:34,822 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 12:20:37,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:20:37,933 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 12:20:37,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:20:37,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-11-07 12:20:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:20:37,983 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 12:20:37,983 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 12:20:37,997 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:20:38,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 12:20:38,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 12:20:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 12:20:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1343 transitions. [2018-11-07 12:20:38,119 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1343 transitions. Word has length 23 [2018-11-07 12:20:38,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:20:38,120 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1343 transitions. [2018-11-07 12:20:38,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:20:38,121 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1343 transitions. [2018-11-07 12:20:38,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-07 12:20:38,128 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:20:38,128 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:20:38,129 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:20:38,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:20:38,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1825616223, now seen corresponding path program 1 times [2018-11-07 12:20:38,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:20:38,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:38,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:20:38,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:38,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:20:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:20:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:20:38,462 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:20:38,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:20:38,463 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:20:38,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:20:38,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:20:38,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:20:38,466 INFO L87 Difference]: Start difference. First operand 744 states and 1343 transitions. Second operand 6 states. [2018-11-07 12:20:45,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:20:45,217 INFO L93 Difference]: Finished difference Result 2846 states and 5292 transitions. [2018-11-07 12:20:45,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:20:45,222 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-11-07 12:20:45,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:20:45,239 INFO L225 Difference]: With dead ends: 2846 [2018-11-07 12:20:45,240 INFO L226 Difference]: Without dead ends: 2108 [2018-11-07 12:20:45,248 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:20:45,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2018-11-07 12:20:45,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2090. [2018-11-07 12:20:45,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2018-11-07 12:20:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3323 transitions. [2018-11-07 12:20:45,356 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3323 transitions. Word has length 96 [2018-11-07 12:20:45,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:20:45,357 INFO L480 AbstractCegarLoop]: Abstraction has 2090 states and 3323 transitions. [2018-11-07 12:20:45,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:20:45,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3323 transitions. [2018-11-07 12:20:45,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 12:20:45,361 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:20:45,361 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:20:45,362 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:20:45,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:20:45,362 INFO L82 PathProgramCache]: Analyzing trace with hash -925105612, now seen corresponding path program 1 times [2018-11-07 12:20:45,362 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:20:45,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:45,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:20:45,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:45,364 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:20:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:20:45,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:20:45,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:20:45,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:20:45,700 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:20:45,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:20:45,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:20:45,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:20:45,701 INFO L87 Difference]: Start difference. First operand 2090 states and 3323 transitions. Second operand 6 states. [2018-11-07 12:20:50,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:20:50,199 INFO L93 Difference]: Finished difference Result 5549 states and 9209 transitions. [2018-11-07 12:20:50,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:20:50,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 12:20:50,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:20:50,224 INFO L225 Difference]: With dead ends: 5549 [2018-11-07 12:20:50,225 INFO L226 Difference]: Without dead ends: 3465 [2018-11-07 12:20:50,238 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 12:20:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2018-11-07 12:20:50,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3433. [2018-11-07 12:20:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3433 states. [2018-11-07 12:20:50,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 5124 transitions. [2018-11-07 12:20:50,329 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 5124 transitions. Word has length 125 [2018-11-07 12:20:50,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:20:50,330 INFO L480 AbstractCegarLoop]: Abstraction has 3433 states and 5124 transitions. [2018-11-07 12:20:50,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:20:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 5124 transitions. [2018-11-07 12:20:50,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-07 12:20:50,336 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:20:50,337 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 12:20:50,337 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:20:50,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:20:50,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1605353442, now seen corresponding path program 1 times [2018-11-07 12:20:50,338 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:20:50,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:50,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:20:50,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:20:50,339 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:20:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:20:50,551 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 12:20:50,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:20:50,552 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:20:50,553 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-07 12:20:50,555 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [263], [265], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 12:20:50,605 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:20:50,606 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:20:51,341 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:20:51,343 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:20:51,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:20:51,383 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:20:52,162 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 77.49% of their original sizes. [2018-11-07 12:20:52,163 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:20:53,292 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-11-07 12:20:53,293 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:20:53,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:20:53,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 12:20:53,294 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:20:53,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 12:20:53,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 12:20:53,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 12:20:53,296 INFO L87 Difference]: Start difference. First operand 3433 states and 5124 transitions. Second operand 10 states. [2018-11-07 12:20:57,767 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