java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:45:08,274 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:45:08,276 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:45:08,289 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:45:08,290 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:45:08,291 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:45:08,292 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:45:08,294 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:45:08,296 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:45:08,297 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:45:08,298 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:45:08,298 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:45:08,299 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:45:08,300 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:45:08,302 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:45:08,302 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:45:08,303 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:45:08,305 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:45:08,307 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:45:08,309 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:45:08,311 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:45:08,312 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:45:08,315 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 02:45:08,315 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 02:45:08,316 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 02:45:08,317 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 02:45:08,318 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 02:45:08,319 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 02:45:08,320 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 02:45:08,321 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 02:45:08,321 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 02:45:08,322 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 02:45:08,322 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 02:45:08,323 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 02:45:08,324 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 02:45:08,324 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 02:45:08,325 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 02:45:08,341 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:45:08,341 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:45:08,342 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:45:08,342 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:45:08,342 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:45:08,343 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:45:08,343 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:45:08,343 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:45:08,343 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:45:08,343 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:45:08,344 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:45:08,344 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:45:08,345 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:45:08,345 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:45:08,345 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:45:08,345 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:45:08,345 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:45:08,346 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:45:08,346 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:45:08,346 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:45:08,346 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:45:08,346 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:45:08,347 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:45:08,347 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:45:08,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:45:08,347 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:45:08,347 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:45:08,348 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:45:08,348 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:45:08,348 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:45:08,348 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:45:08,348 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:45:08,349 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:45:08,349 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:45:08,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:45:08,433 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:45:08,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:45:08,438 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:45:08,439 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:45:08,440 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21_true-unreach-call.c [2018-11-07 02:45:08,503 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ceaaf3b/7de805db10da425ab6dea13f24b58c69/FLAG36028c64f [2018-11-07 02:45:09,159 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:45:09,161 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label21_true-unreach-call.c [2018-11-07 02:45:09,181 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ceaaf3b/7de805db10da425ab6dea13f24b58c69/FLAG36028c64f [2018-11-07 02:45:09,203 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ceaaf3b/7de805db10da425ab6dea13f24b58c69 [2018-11-07 02:45:09,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:45:09,219 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:45:09,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:45:09,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:45:09,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:45:09,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:09" (1/1) ... [2018-11-07 02:45:09,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a84e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:09, skipping insertion in model container [2018-11-07 02:45:09,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:09" (1/1) ... [2018-11-07 02:45:09,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:45:09,335 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:45:09,922 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:45:09,928 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:45:10,043 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:45:10,063 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:45:10,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:10 WrapperNode [2018-11-07 02:45:10,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:45:10,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:45:10,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:45:10,066 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:45:10,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:10" (1/1) ... [2018-11-07 02:45:10,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:10" (1/1) ... [2018-11-07 02:45:10,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:45:10,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:45:10,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:45:10,215 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:45:10,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:10" (1/1) ... [2018-11-07 02:45:10,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:10" (1/1) ... [2018-11-07 02:45:10,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:10" (1/1) ... [2018-11-07 02:45:10,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:10" (1/1) ... [2018-11-07 02:45:10,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:10" (1/1) ... [2018-11-07 02:45:10,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:10" (1/1) ... [2018-11-07 02:45:10,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:10" (1/1) ... [2018-11-07 02:45:10,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:45:10,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:45:10,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:45:10,306 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:45:10,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:45:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:45:10,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:45:10,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:45:10,388 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:45:10,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:45:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:45:10,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:45:10,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:45:10,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:45:13,477 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:45:13,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:45:13 BoogieIcfgContainer [2018-11-07 02:45:13,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:45:13,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:45:13,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:45:13,483 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:45:13,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:45:09" (1/3) ... [2018-11-07 02:45:13,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd11061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:45:13, skipping insertion in model container [2018-11-07 02:45:13,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:10" (2/3) ... [2018-11-07 02:45:13,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd11061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:45:13, skipping insertion in model container [2018-11-07 02:45:13,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:45:13" (3/3) ... [2018-11-07 02:45:13,487 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label21_true-unreach-call.c [2018-11-07 02:45:13,498 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:45:13,512 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:45:13,532 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:45:13,568 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:45:13,568 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:45:13,568 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:45:13,568 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:45:13,569 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:45:13,569 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:45:13,569 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:45:13,569 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:45:13,597 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 02:45:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-07 02:45:13,607 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:13,608 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] [2018-11-07 02:45:13,611 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:13,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:13,618 INFO L82 PathProgramCache]: Analyzing trace with hash 763875860, now seen corresponding path program 1 times [2018-11-07 02:45:13,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:13,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:13,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:13,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:13,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:14,096 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:45:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:14,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:14,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 02:45:14,213 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:14,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 02:45:14,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 02:45:14,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:45:14,240 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 02:45:15,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:15,986 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 02:45:15,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 02:45:15,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-11-07 02:45:15,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:16,008 INFO L225 Difference]: With dead ends: 574 [2018-11-07 02:45:16,009 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 02:45:16,017 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 02:45:16,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 02:45:16,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 02:45:16,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 02:45:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-11-07 02:45:16,099 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 34 [2018-11-07 02:45:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:16,100 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-11-07 02:45:16,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 02:45:16,100 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-11-07 02:45:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-07 02:45:16,107 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:16,107 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] [2018-11-07 02:45:16,107 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:16,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:16,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1148608533, now seen corresponding path program 1 times [2018-11-07 02:45:16,108 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:16,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:16,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:16,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:16,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:16,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:16,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 02:45:16,438 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:16,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 02:45:16,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 02:45:16,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 02:45:16,441 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-11-07 02:45:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:18,977 INFO L93 Difference]: Finished difference Result 1287 states and 2312 transitions. [2018-11-07 02:45:18,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 02:45:18,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-11-07 02:45:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:18,987 INFO L225 Difference]: With dead ends: 1287 [2018-11-07 02:45:18,988 INFO L226 Difference]: Without dead ends: 937 [2018-11-07 02:45:18,993 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 02:45:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2018-11-07 02:45:19,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 924. [2018-11-07 02:45:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2018-11-07 02:45:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1441 transitions. [2018-11-07 02:45:19,059 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1441 transitions. Word has length 117 [2018-11-07 02:45:19,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:19,060 INFO L480 AbstractCegarLoop]: Abstraction has 924 states and 1441 transitions. [2018-11-07 02:45:19,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 02:45:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1441 transitions. [2018-11-07 02:45:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 02:45:19,070 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:19,071 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] [2018-11-07 02:45:19,071 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:19,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:19,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1243271371, now seen corresponding path program 1 times [2018-11-07 02:45:19,072 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:19,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:19,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:19,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:19,075 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:19,455 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:45:19,870 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:19,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:19,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:45:19,871 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:19,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:45:19,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:45:19,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:45:19,873 INFO L87 Difference]: Start difference. First operand 924 states and 1441 transitions. Second operand 6 states. [2018-11-07 02:45:23,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:23,594 INFO L93 Difference]: Finished difference Result 2533 states and 4079 transitions. [2018-11-07 02:45:23,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:45:23,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-11-07 02:45:23,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:23,620 INFO L225 Difference]: With dead ends: 2533 [2018-11-07 02:45:23,621 INFO L226 Difference]: Without dead ends: 1615 [2018-11-07 02:45:23,629 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 02:45:23,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2018-11-07 02:45:23,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1584. [2018-11-07 02:45:23,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2018-11-07 02:45:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2317 transitions. [2018-11-07 02:45:23,699 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2317 transitions. Word has length 133 [2018-11-07 02:45:23,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:23,699 INFO L480 AbstractCegarLoop]: Abstraction has 1584 states and 2317 transitions. [2018-11-07 02:45:23,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:45:23,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2317 transitions. [2018-11-07 02:45:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-07 02:45:23,706 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:23,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:45:23,707 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:23,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:23,708 INFO L82 PathProgramCache]: Analyzing trace with hash 505043483, now seen corresponding path program 1 times [2018-11-07 02:45:23,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:23,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:23,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:23,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:23,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:24,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:24,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:45:24,039 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:24,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:45:24,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:45:24,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:45:24,040 INFO L87 Difference]: Start difference. First operand 1584 states and 2317 transitions. Second operand 6 states. [2018-11-07 02:45:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:25,394 INFO L93 Difference]: Finished difference Result 3502 states and 5313 transitions. [2018-11-07 02:45:25,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:45:25,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-11-07 02:45:25,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:25,415 INFO L225 Difference]: With dead ends: 3502 [2018-11-07 02:45:25,415 INFO L226 Difference]: Without dead ends: 1924 [2018-11-07 02:45:25,423 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 02:45:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2018-11-07 02:45:25,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1885. [2018-11-07 02:45:25,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2018-11-07 02:45:25,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2678 transitions. [2018-11-07 02:45:25,485 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2678 transitions. Word has length 157 [2018-11-07 02:45:25,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:25,486 INFO L480 AbstractCegarLoop]: Abstraction has 1885 states and 2678 transitions. [2018-11-07 02:45:25,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:45:25,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2678 transitions. [2018-11-07 02:45:25,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-11-07 02:45:25,493 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:25,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:45:25,493 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:25,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:25,494 INFO L82 PathProgramCache]: Analyzing trace with hash -336881060, now seen corresponding path program 1 times [2018-11-07 02:45:25,494 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:25,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:25,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:25,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:25,496 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:25,677 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:25,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:45:25,678 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:45:25,678 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 189 with the following transitions: [2018-11-07 02:45:25,681 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], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:45:25,753 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:45:25,753 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:45:27,804 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:45:38,427 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:45:38,429 INFO L272 AbstractInterpreter]: Visited 91 different actions 431 times. Merged at 5 different actions 20 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:45:38,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:38,441 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:45:40,586 INFO L227 lantSequenceWeakener]: Weakened 36 states. On average, predicates are now at 76.52% of their original sizes. [2018-11-07 02:45:40,586 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:45:53,098 INFO L415 sIntCurrentIteration]: We unified 187 AI predicates to 187 [2018-11-07 02:45:53,098 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:45:53,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:45:53,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-07 02:45:53,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:53,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 02:45:53,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 02:45:53,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2018-11-07 02:45:53,101 INFO L87 Difference]: Start difference. First operand 1885 states and 2678 transitions. Second operand 20 states. [2018-11-07 02:48:35,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:48:35,122 INFO L93 Difference]: Finished difference Result 4524 states and 6515 transitions. [2018-11-07 02:48:35,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 02:48:35,122 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 188 [2018-11-07 02:48:35,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:48:35,138 INFO L225 Difference]: With dead ends: 4524 [2018-11-07 02:48:35,139 INFO L226 Difference]: Without dead ends: 2645 [2018-11-07 02:48:35,148 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 198 GetRequests, 160 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2018-11-07 02:48:35,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2018-11-07 02:48:35,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2635. [2018-11-07 02:48:35,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2635 states. [2018-11-07 02:48:35,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3517 transitions. [2018-11-07 02:48:35,293 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3517 transitions. Word has length 188 [2018-11-07 02:48:35,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:48:35,293 INFO L480 AbstractCegarLoop]: Abstraction has 2635 states and 3517 transitions. [2018-11-07 02:48:35,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 02:48:35,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3517 transitions. [2018-11-07 02:48:35,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-11-07 02:48:35,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:48:35,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:48:35,300 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:48:35,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:48:35,300 INFO L82 PathProgramCache]: Analyzing trace with hash -431970569, now seen corresponding path program 1 times [2018-11-07 02:48:35,301 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:48:35,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:48:35,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:48:35,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:48:35,302 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:48:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:48:35,995 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-07 02:48:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:48:36,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:48:36,159 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:48:36,159 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-11-07 02:48:36,160 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], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:48:36,166 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:48:36,167 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:48:37,831 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:48:47,608 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:48:47,608 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:48:47,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:48:47,615 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:48:49,499 INFO L227 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 77.27% of their original sizes. [2018-11-07 02:48:49,499 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 02:49:06,278 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:49:06,283 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:49:06,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:49:06 BoogieIcfgContainer [2018-11-07 02:49:06,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:49:06,291 INFO L168 Benchmark]: Toolchain (without parser) took 237073.71 ms. Allocated memory was 1.6 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -670.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 02:49:06,293 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:49:06,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 842.20 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-11-07 02:49:06,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 148.45 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 727.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2018-11-07 02:49:06,298 INFO L168 Benchmark]: Boogie Preprocessor took 90.93 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:49:06,300 INFO L168 Benchmark]: RCFGBuilder took 3172.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 100.1 MB). Peak memory consumption was 100.1 MB. Max. memory is 7.1 GB. [2018-11-07 02:49:06,301 INFO L168 Benchmark]: TraceAbstraction took 232804.48 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 11.8 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 02:49:06,307 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 842.20 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 148.45 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 727.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.1 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.93 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3172.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 100.1 MB). Peak memory consumption was 100.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232804.48 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 11.8 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 85). Cancelled while BasicCegarLoop was analyzing trace of length 198 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 232.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 171.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 543 SDtfs, 4419 SDslu, 850 SDs, 0 SdLazy, 6067 SolverSat, 1208 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 232 GetRequests, 169 SyntacticMatches, 13 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 16.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2635occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 24.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9938415257123394 AbsIntWeakeningRatio, 0.13577023498694518 AbsIntAvgWeakeningVarsNumRemoved, 507.6344647519582 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 93 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 629 NumberOfCodeBlocks, 629 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 624 ConstructedInterpolants, 0 QuantifiedInterpolants, 379039 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 204/206 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown