java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label34_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:54:38,219 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:54:38,224 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:54:38,247 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:54:38,248 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:54:38,249 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:54:38,250 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:54:38,252 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:54:38,253 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:54:38,254 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:54:38,255 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:54:38,255 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:54:38,256 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:54:38,257 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:54:38,258 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:54:38,259 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:54:38,260 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:54:38,262 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:54:38,264 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:54:38,266 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:54:38,267 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:54:38,268 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:54:38,271 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 01:54:38,271 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 01:54:38,271 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 01:54:38,272 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 01:54:38,273 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 01:54:38,274 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 01:54:38,275 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 01:54:38,276 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 01:54:38,276 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 01:54:38,277 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 01:54:38,277 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:54:38,278 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:54:38,278 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:54:38,279 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:54:38,280 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 01:54:38,295 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:54:38,295 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:54:38,296 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:54:38,296 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:54:38,297 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:54:38,297 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:54:38,297 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:54:38,297 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:54:38,297 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:54:38,298 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:54:38,298 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:54:38,298 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:54:38,299 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:54:38,299 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:54:38,299 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:54:38,299 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:54:38,299 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:54:38,300 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:54:38,300 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:54:38,300 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:54:38,300 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:54:38,300 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:54:38,301 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:54:38,301 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:54:38,301 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:54:38,301 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:54:38,301 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:54:38,302 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:54:38,302 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:54:38,302 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:54:38,302 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:54:38,302 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:54:38,303 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:54:38,303 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:54:38,346 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:54:38,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:54:38,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:54:38,364 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:54:38,364 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:54:38,365 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label34_true-unreach-call.c [2018-10-24 01:54:38,424 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fdbf186e9/5003e54d995d43b5b60b410dc7de43a7/FLAG9baa80435 [2018-10-24 01:54:39,106 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:54:39,107 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label34_true-unreach-call.c [2018-10-24 01:54:39,128 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fdbf186e9/5003e54d995d43b5b60b410dc7de43a7/FLAG9baa80435 [2018-10-24 01:54:39,143 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fdbf186e9/5003e54d995d43b5b60b410dc7de43a7 [2018-10-24 01:54:39,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:54:39,156 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:54:39,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:54:39,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:54:39,161 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:54:39,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:54:39" (1/1) ... [2018-10-24 01:54:39,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20472c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:54:39, skipping insertion in model container [2018-10-24 01:54:39,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:54:39" (1/1) ... [2018-10-24 01:54:39,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:54:39,260 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:54:39,957 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:54:39,962 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:54:40,223 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:54:40,246 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:54:40,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:54:40 WrapperNode [2018-10-24 01:54:40,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:54:40,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:54:40,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:54:40,248 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:54:40,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:54:40" (1/1) ... [2018-10-24 01:54:40,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:54:40" (1/1) ... [2018-10-24 01:54:40,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:54:40,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:54:40,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:54:40,565 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:54:40,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:54:40" (1/1) ... [2018-10-24 01:54:40,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:54:40" (1/1) ... [2018-10-24 01:54:40,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:54:40" (1/1) ... [2018-10-24 01:54:40,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:54:40" (1/1) ... [2018-10-24 01:54:40,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:54:40" (1/1) ... [2018-10-24 01:54:40,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:54:40" (1/1) ... [2018-10-24 01:54:40,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:54:40" (1/1) ... [2018-10-24 01:54:40,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:54:40,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:54:40,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:54:40,772 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:54:40,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:54:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:54:40,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:54:40,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:54:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:54:40,844 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:54:40,845 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:54:40,845 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:54:40,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:54:40,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:54:40,846 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:54:40,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:54:47,586 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:54:47,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:54:47 BoogieIcfgContainer [2018-10-24 01:54:47,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:54:47,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:54:47,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:54:47,592 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:54:47,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:54:39" (1/3) ... [2018-10-24 01:54:47,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc1b97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:54:47, skipping insertion in model container [2018-10-24 01:54:47,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:54:40" (2/3) ... [2018-10-24 01:54:47,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc1b97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:54:47, skipping insertion in model container [2018-10-24 01:54:47,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:54:47" (3/3) ... [2018-10-24 01:54:47,596 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label34_true-unreach-call.c [2018-10-24 01:54:47,606 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:54:47,615 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:54:47,634 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:54:47,676 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:54:47,676 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:54:47,677 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:54:47,677 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:54:47,677 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:54:47,677 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:54:47,677 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:54:47,678 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:54:47,710 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 01:54:47,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 01:54:47,720 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:54:47,721 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:54:47,724 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:54:47,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:54:47,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1701003787, now seen corresponding path program 1 times [2018-10-24 01:54:47,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:54:47,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:54:47,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:54:47,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:54:47,784 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:54:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:54:48,194 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:54:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:54:48,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:54:48,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:54:48,248 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:54:48,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:54:48,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:54:48,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:54:48,272 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 01:54:52,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:54:52,009 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 01:54:52,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:54:52,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-10-24 01:54:52,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:54:52,037 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 01:54:52,037 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 01:54:52,049 INFO L605 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 [2018-10-24 01:54:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 01:54:52,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 01:54:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 01:54:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-10-24 01:54:52,173 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 41 [2018-10-24 01:54:52,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:54:52,174 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-10-24 01:54:52,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:54:52,174 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-10-24 01:54:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 01:54:52,181 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:54:52,181 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:54:52,182 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:54:52,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:54:52,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1000766724, now seen corresponding path program 1 times [2018-10-24 01:54:52,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:54:52,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:54:52,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:54:52,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:54:52,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:54:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:54:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:54:52,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:54:52,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:54:52,458 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:54:52,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:54:52,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:54:52,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:54:52,461 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-10-24 01:55:00,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:55:00,645 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-10-24 01:55:00,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:55:00,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-10-24 01:55:00,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:55:00,658 INFO L225 Difference]: With dead ends: 2194 [2018-10-24 01:55:00,659 INFO L226 Difference]: Without dead ends: 1456 [2018-10-24 01:55:00,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:55:00,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-10-24 01:55:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-10-24 01:55:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-24 01:55:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-10-24 01:55:00,750 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 111 [2018-10-24 01:55:00,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:55:00,751 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-10-24 01:55:00,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:55:00,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-10-24 01:55:00,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 01:55:00,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:55:00,766 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:55:00,766 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:55:00,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:55:00,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1676864445, now seen corresponding path program 1 times [2018-10-24 01:55:00,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:55:00,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:55:00,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:55:00,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:55:00,770 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:55:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:55:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:55:01,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:55:01,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:55:01,003 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:55:01,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:55:01,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:55:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:55:01,005 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-10-24 01:55:06,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:55:06,080 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-10-24 01:55:06,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:55:06,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-24 01:55:06,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:55:06,107 INFO L225 Difference]: With dead ends: 3936 [2018-10-24 01:55:06,108 INFO L226 Difference]: Without dead ends: 2506 [2018-10-24 01:55:06,117 INFO L605 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 [2018-10-24 01:55:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-10-24 01:55:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-10-24 01:55:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-10-24 01:55:06,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-10-24 01:55:06,214 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 140 [2018-10-24 01:55:06,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:55:06,215 INFO L481 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-10-24 01:55:06,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:55:06,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-10-24 01:55:06,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-24 01:55:06,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:55:06,224 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:55:06,224 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:55:06,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:55:06,226 INFO L82 PathProgramCache]: Analyzing trace with hash 731010881, now seen corresponding path program 1 times [2018-10-24 01:55:06,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:55:06,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:55:06,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:55:06,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:55:06,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:55:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:55:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:55:06,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:55:06,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:55:06,500 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:55:06,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:55:06,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:55:06,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:55:06,502 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-10-24 01:55:10,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:55:10,009 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-10-24 01:55:10,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:55:10,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-10-24 01:55:10,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:55:10,035 INFO L225 Difference]: With dead ends: 6050 [2018-10-24 01:55:10,035 INFO L226 Difference]: Without dead ends: 3577 [2018-10-24 01:55:10,046 INFO L605 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 [2018-10-24 01:55:10,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-10-24 01:55:10,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-10-24 01:55:10,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-10-24 01:55:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-10-24 01:55:10,154 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 158 [2018-10-24 01:55:10,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:55:10,155 INFO L481 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-10-24 01:55:10,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:55:10,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-10-24 01:55:10,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-24 01:55:10,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:55:10,159 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:55:10,159 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:55:10,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:55:10,160 INFO L82 PathProgramCache]: Analyzing trace with hash 2053720421, now seen corresponding path program 1 times [2018-10-24 01:55:10,160 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:55:10,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:55:10,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:55:10,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:55:10,161 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:55:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:55:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 101 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:55:10,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:55:10,406 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:55:10,407 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-10-24 01:55:10,409 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [407], [409], [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], [672], [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], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 01:55:10,491 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:55:10,491 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:55:13,877 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:55:13,878 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:55:13,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:55:13,893 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:55:15,941 INFO L232 lantSequenceWeakener]: Weakened 233 states. On average, predicates are now at 77.81% of their original sizes. [2018-10-24 01:55:15,941 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:55:16,368 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:55:16,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:55:16,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-24 01:55:16,369 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:55:16,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 01:55:16,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 01:55:16,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:55:16,371 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 8 states. [2018-10-24 01:55:21,816 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:56:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:56:19,082 INFO L93 Difference]: Finished difference Result 7424 states and 10344 transitions. [2018-10-24 01:56:19,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:56:19,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 241 [2018-10-24 01:56:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:56:19,100 INFO L225 Difference]: With dead ends: 7424 [2018-10-24 01:56:19,100 INFO L226 Difference]: Without dead ends: 3885 [2018-10-24 01:56:19,112 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 242 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 01:56:19,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2018-10-24 01:56:19,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3883. [2018-10-24 01:56:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-10-24 01:56:19,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5311 transitions. [2018-10-24 01:56:19,202 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5311 transitions. Word has length 241 [2018-10-24 01:56:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:56:19,203 INFO L481 AbstractCegarLoop]: Abstraction has 3883 states and 5311 transitions. [2018-10-24 01:56:19,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 01:56:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5311 transitions. [2018-10-24 01:56:19,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-24 01:56:19,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:56:19,211 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:56:19,211 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:56:19,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:56:19,211 INFO L82 PathProgramCache]: Analyzing trace with hash -822869790, now seen corresponding path program 1 times [2018-10-24 01:56:19,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:56:19,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:56:19,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:56:19,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:56:19,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:56:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:56:19,478 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 01:56:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 174 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-24 01:56:19,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:56:19,795 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:56:19,796 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 334 with the following transitions: [2018-10-24 01:56:19,796 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [407], [409], [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], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 01:56:19,805 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:56:19,805 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:56:21,318 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:56:35,017 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:56:35,018 INFO L272 AbstractInterpreter]: Visited 139 different actions 537 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:56:35,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:56:35,031 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:56:38,523 INFO L232 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 77.39% of their original sizes. [2018-10-24 01:56:38,524 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:57:23,790 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:57:23,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:57:23,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [7] total 27 [2018-10-24 01:57:23,791 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:57:23,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-24 01:57:23,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-24 01:57:23,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2018-10-24 01:57:23,793 INFO L87 Difference]: Start difference. First operand 3883 states and 5311 transitions. Second operand 22 states. Received shutdown request... [2018-10-24 01:58:27,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 01:58:27,116 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:58:27,121 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:58:27,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:58:27 BoogieIcfgContainer [2018-10-24 01:58:27,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:58:27,122 INFO L168 Benchmark]: Toolchain (without parser) took 227967.30 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 01:58:27,124 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:58:27,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1089.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:58:27,125 INFO L168 Benchmark]: Boogie Procedure Inliner took 316.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -845.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:58:27,126 INFO L168 Benchmark]: Boogie Preprocessor took 206.62 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:58:27,127 INFO L168 Benchmark]: RCFGBuilder took 6816.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 252.9 MB). Peak memory consumption was 252.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:58:27,128 INFO L168 Benchmark]: TraceAbstraction took 219533.25 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -352.9 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 01:58:27,133 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1089.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 316.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -845.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 206.62 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6816.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 252.9 MB). Peak memory consumption was 252.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219533.25 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -352.9 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 109). Cancelled while BasicCegarLoop was constructing difference of abstraction (3883states) and FLOYD_HOARE automaton (currently 19 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (1991 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 219.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 146.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 945 SDtfs, 8198 SDslu, 1118 SDs, 0 SdLazy, 11944 SolverSat, 2471 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 61.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 620 GetRequests, 363 SyntacticMatches, 196 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 47.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3883occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995727551434073 AbsIntWeakeningRatio, 0.10139860139860139 AbsIntAvgWeakeningVarsNumRemoved, 392.95454545454544 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 81 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1024 NumberOfCodeBlocks, 1024 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1018 ConstructedInterpolants, 0 QuantifiedInterpolants, 866617 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 427/574 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown