java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label45_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:58:38,187 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:58:38,189 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:58:38,206 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:58:38,206 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:58:38,207 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:58:38,209 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:58:38,211 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:58:38,212 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:58:38,213 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:58:38,214 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:58:38,214 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:58:38,215 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:58:38,216 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:58:38,219 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:58:38,219 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:58:38,221 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:58:38,228 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:58:38,234 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:58:38,235 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:58:38,240 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:58:38,241 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:58:38,247 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:58:38,247 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:58:38,247 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:58:38,248 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:58:38,251 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:58:38,252 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:58:38,253 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:58:38,256 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:58:38,256 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:58:38,257 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:58:38,257 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:58:38,257 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:58:38,258 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:58:38,259 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:58:38,259 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:58:38,278 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:58:38,278 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:58:38,280 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:58:38,280 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:58:38,280 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:58:38,280 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:58:38,280 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:58:38,281 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:58:38,281 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:58:38,281 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:58:38,281 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:58:38,281 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:58:38,282 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:58:38,285 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:58:38,286 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:58:38,286 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:58:38,286 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:58:38,286 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:58:38,286 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:58:38,288 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:58:38,288 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:58:38,289 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:58:38,289 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:58:38,289 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:58:38,289 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:58:38,289 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:58:38,290 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:58:38,290 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:58:38,290 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:58:38,290 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:58:38,291 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:58:38,291 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:58:38,291 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:58:38,291 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:58:38,291 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:58:38,351 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:58:38,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:58:38,368 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:58:38,369 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:58:38,369 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:58:38,370 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label45_false-unreach-call.c [2018-11-12 16:58:38,431 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821106e41/b891e5de331a49d489bc6e816f1b55a3/FLAGb631c65b5 [2018-11-12 16:58:39,134 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:58:39,135 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label45_false-unreach-call.c [2018-11-12 16:58:39,164 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821106e41/b891e5de331a49d489bc6e816f1b55a3/FLAGb631c65b5 [2018-11-12 16:58:39,185 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/821106e41/b891e5de331a49d489bc6e816f1b55a3 [2018-11-12 16:58:39,198 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:58:39,200 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:58:39,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:58:39,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:58:39,206 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:58:39,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:58:39" (1/1) ... [2018-11-12 16:58:39,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb9594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:39, skipping insertion in model container [2018-11-12 16:58:39,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:58:39" (1/1) ... [2018-11-12 16:58:39,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:58:39,367 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:58:40,452 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:58:40,458 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:58:40,908 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:58:40,933 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:58:40,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:40 WrapperNode [2018-11-12 16:58:40,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:58:40,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:58:40,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:58:40,935 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:58:41,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:40" (1/1) ... [2018-11-12 16:58:41,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:40" (1/1) ... [2018-11-12 16:58:41,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:58:41,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:58:41,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:58:41,214 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:58:41,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:40" (1/1) ... [2018-11-12 16:58:41,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:40" (1/1) ... [2018-11-12 16:58:41,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:40" (1/1) ... [2018-11-12 16:58:41,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:40" (1/1) ... [2018-11-12 16:58:41,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:40" (1/1) ... [2018-11-12 16:58:41,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:40" (1/1) ... [2018-11-12 16:58:41,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:40" (1/1) ... [2018-11-12 16:58:41,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:58:41,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:58:41,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:58:41,440 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:58:41,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:40" (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 [2018-11-12 16:58:41,511 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:58:41,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:58:41,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:58:41,512 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:58:41,512 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:58:41,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:58:41,513 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:58:41,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:58:41,513 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:58:41,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:58:41,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:58:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:58:41,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:58:49,296 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:58:49,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:58:49 BoogieIcfgContainer [2018-11-12 16:58:49,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:58:49,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:58:49,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:58:49,302 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:58:49,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:58:39" (1/3) ... [2018-11-12 16:58:49,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527abe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:58:49, skipping insertion in model container [2018-11-12 16:58:49,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:58:40" (2/3) ... [2018-11-12 16:58:49,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527abe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:58:49, skipping insertion in model container [2018-11-12 16:58:49,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:58:49" (3/3) ... [2018-11-12 16:58:49,306 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label45_false-unreach-call.c [2018-11-12 16:58:49,316 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:58:49,325 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:58:49,343 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:58:49,393 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:58:49,393 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:58:49,393 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:58:49,393 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:58:49,393 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:58:49,394 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:58:49,394 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:58:49,394 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:58:49,440 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-12 16:58:49,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-12 16:58:49,450 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:58:49,451 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] [2018-11-12 16:58:49,453 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:58:49,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:58:49,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1137979268, now seen corresponding path program 1 times [2018-11-12 16:58:49,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:58:49,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:49,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:58:49,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:49,513 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:58:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:58:49,900 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:58:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:58:50,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:58:50,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:58:50,021 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:58:50,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:58:50,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:58:50,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:58:50,051 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-12 16:58:56,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:58:56,094 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-12 16:58:56,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:58:56,096 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-11-12 16:58:56,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:58:56,145 INFO L225 Difference]: With dead ends: 2251 [2018-11-12 16:58:56,145 INFO L226 Difference]: Without dead ends: 1474 [2018-11-12 16:58:56,164 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 [2018-11-12 16:58:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-12 16:58:56,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-12 16:58:56,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-12 16:58:56,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-12 16:58:56,354 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 36 [2018-11-12 16:58:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:58:56,355 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-12 16:58:56,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:58:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-12 16:58:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-12 16:58:56,362 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:58:56,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:58:56,363 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:58:56,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:58:56,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1760382179, now seen corresponding path program 1 times [2018-11-12 16:58:56,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:58:56,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:56,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:58:56,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:56,366 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:58:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:58:56,767 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:58:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:58:56,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:58:56,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:58:56,853 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:58:56,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:58:56,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:58:56,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:58:56,856 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-11-12 16:59:08,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:59:08,999 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-11-12 16:59:08,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:59:09,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-12 16:59:09,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:59:09,022 INFO L225 Difference]: With dead ends: 4419 [2018-11-12 16:59:09,023 INFO L226 Difference]: Without dead ends: 2951 [2018-11-12 16:59:09,029 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:59:09,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-12 16:59:09,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-11-12 16:59:09,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-12 16:59:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-11-12 16:59:09,140 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 125 [2018-11-12 16:59:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:59:09,141 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-11-12 16:59:09,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:59:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-11-12 16:59:09,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-12 16:59:09,147 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:59:09,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:59:09,148 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:59:09,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:09,148 INFO L82 PathProgramCache]: Analyzing trace with hash 439541734, now seen corresponding path program 1 times [2018-11-12 16:59:09,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:59:09,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:09,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:59:09,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:09,150 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:59:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:59:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:59:09,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:59:09,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:59:09,475 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:59:09,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:59:09,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:59:09,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:59:09,477 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-11-12 16:59:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:59:18,549 INFO L93 Difference]: Finished difference Result 10194 states and 17948 transitions. [2018-11-12 16:59:18,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:59:18,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-11-12 16:59:18,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:59:18,604 INFO L225 Difference]: With dead ends: 10194 [2018-11-12 16:59:18,605 INFO L226 Difference]: Without dead ends: 7272 [2018-11-12 16:59:18,623 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 [2018-11-12 16:59:18,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-11-12 16:59:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7208. [2018-11-12 16:59:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7208 states. [2018-11-12 16:59:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 11881 transitions. [2018-11-12 16:59:18,871 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 11881 transitions. Word has length 172 [2018-11-12 16:59:18,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:59:18,873 INFO L480 AbstractCegarLoop]: Abstraction has 7208 states and 11881 transitions. [2018-11-12 16:59:18,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:59:18,874 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 11881 transitions. [2018-11-12 16:59:18,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-12 16:59:18,878 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:59:18,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:59:18,878 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:59:18,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:18,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1837933570, now seen corresponding path program 1 times [2018-11-12 16:59:18,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:59:18,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:18,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:59:18,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:18,880 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:59:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:59:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:59:19,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:59:19,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:59:19,176 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:59:19,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:59:19,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:59:19,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:59:19,177 INFO L87 Difference]: Start difference. First operand 7208 states and 11881 transitions. Second operand 6 states. [2018-11-12 16:59:24,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:59:24,670 INFO L93 Difference]: Finished difference Result 17365 states and 29107 transitions. [2018-11-12 16:59:24,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:59:24,671 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-11-12 16:59:24,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:59:24,725 INFO L225 Difference]: With dead ends: 17365 [2018-11-12 16:59:24,725 INFO L226 Difference]: Without dead ends: 10163 [2018-11-12 16:59:24,752 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 [2018-11-12 16:59:24,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2018-11-12 16:59:24,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10108. [2018-11-12 16:59:24,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10108 states. [2018-11-12 16:59:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14258 transitions. [2018-11-12 16:59:24,997 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 14258 transitions. Word has length 174 [2018-11-12 16:59:24,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:59:24,998 INFO L480 AbstractCegarLoop]: Abstraction has 10108 states and 14258 transitions. [2018-11-12 16:59:24,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:59:24,998 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 14258 transitions. [2018-11-12 16:59:25,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-12 16:59:25,005 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:59:25,005 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:59:25,005 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:59:25,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:25,006 INFO L82 PathProgramCache]: Analyzing trace with hash 268481184, now seen corresponding path program 1 times [2018-11-12 16:59:25,006 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:59:25,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:25,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:59:25,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:25,007 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:59:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:59:25,274 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-12 16:59:25,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:59:25,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:59:25,274 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:59:25,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:59:25,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:59:25,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:59:25,276 INFO L87 Difference]: Start difference. First operand 10108 states and 14258 transitions. Second operand 4 states. [2018-11-12 16:59:32,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:59:32,941 INFO L93 Difference]: Finished difference Result 28811 states and 41798 transitions. [2018-11-12 16:59:32,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:59:32,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2018-11-12 16:59:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:59:33,026 INFO L225 Difference]: With dead ends: 28811 [2018-11-12 16:59:33,027 INFO L226 Difference]: Without dead ends: 18709 [2018-11-12 16:59:33,077 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:59:33,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18709 states. [2018-11-12 16:59:33,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18709 to 18709. [2018-11-12 16:59:33,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18709 states. [2018-11-12 16:59:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18709 states to 18709 states and 25926 transitions. [2018-11-12 16:59:33,476 INFO L78 Accepts]: Start accepts. Automaton has 18709 states and 25926 transitions. Word has length 232 [2018-11-12 16:59:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:59:33,477 INFO L480 AbstractCegarLoop]: Abstraction has 18709 states and 25926 transitions. [2018-11-12 16:59:33,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:59:33,478 INFO L276 IsEmpty]: Start isEmpty. Operand 18709 states and 25926 transitions. [2018-11-12 16:59:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-11-12 16:59:33,495 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:59:33,495 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:59:33,496 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:59:33,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:33,496 INFO L82 PathProgramCache]: Analyzing trace with hash -418391288, now seen corresponding path program 1 times [2018-11-12 16:59:33,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:59:33,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:33,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:59:33,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:59:33,498 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:59:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:59:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 133 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:59:33,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:59:33,878 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:59:33,880 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 277 with the following transitions: [2018-11-12 16:59:33,886 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1811], [1813], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:59:33,949 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:59:33,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:59:34,745 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:59:34,748 INFO L272 AbstractInterpreter]: Visited 138 different actions 138 times. Never merged. Never widened. Performed 1279 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1279 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:59:34,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:59:34,791 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:59:35,559 INFO L227 lantSequenceWeakener]: Weakened 267 states. On average, predicates are now at 77.57% of their original sizes. [2018-11-12 16:59:35,559 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:59:35,786 INFO L415 sIntCurrentIteration]: We unified 275 AI predicates to 275 [2018-11-12 16:59:35,786 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:59:35,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:59:35,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-12 16:59:35,788 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:59:35,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:59:35,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:59:35,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:59:35,789 INFO L87 Difference]: Start difference. First operand 18709 states and 25926 transitions. Second operand 7 states. [2018-11-12 16:59:43,443 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 17:00:06,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:00:06,284 INFO L93 Difference]: Finished difference Result 38117 states and 52714 transitions. [2018-11-12 17:00:06,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:00:06,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2018-11-12 17:00:06,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:00:06,380 INFO L225 Difference]: With dead ends: 38117 [2018-11-12 17:00:06,381 INFO L226 Difference]: Without dead ends: 19414 [2018-11-12 17:00:06,424 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 276 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:00:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19414 states. [2018-11-12 17:00:06,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19414 to 19412. [2018-11-12 17:00:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19412 states. [2018-11-12 17:00:06,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19412 states to 19412 states and 26641 transitions. [2018-11-12 17:00:06,815 INFO L78 Accepts]: Start accepts. Automaton has 19412 states and 26641 transitions. Word has length 276 [2018-11-12 17:00:06,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:00:06,816 INFO L480 AbstractCegarLoop]: Abstraction has 19412 states and 26641 transitions. [2018-11-12 17:00:06,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 17:00:06,816 INFO L276 IsEmpty]: Start isEmpty. Operand 19412 states and 26641 transitions. [2018-11-12 17:00:06,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-11-12 17:00:06,839 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:00:06,839 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:00:06,840 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:00:06,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:00:06,840 INFO L82 PathProgramCache]: Analyzing trace with hash -41660661, now seen corresponding path program 1 times [2018-11-12 17:00:06,840 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:00:06,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:06,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:00:06,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:00:06,841 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:00:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:00:07,383 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 17:00:07,592 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 17:00:07,819 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 17:00:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 146 proven. 283 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 17:00:08,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:00:08,316 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:00:08,317 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 464 with the following transitions: [2018-11-12 17:00:08,317 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1811], [1813], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 17:00:08,325 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:00:08,325 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:00:09,760 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:00:09,767 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Performed 5920 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5920 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 17:00:09,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:00:09,815 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:00:11,475 INFO L227 lantSequenceWeakener]: Weakened 138 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-12 17:00:11,475 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:00:12,446 INFO L415 sIntCurrentIteration]: We unified 462 AI predicates to 462 [2018-11-12 17:00:12,447 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:00:12,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:00:12,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-12 17:00:12,447 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:00:12,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 17:00:12,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 17:00:12,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-11-12 17:00:12,448 INFO L87 Difference]: Start difference. First operand 19412 states and 26641 transitions. Second operand 16 states. [2018-11-12 17:00:48,295 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 17:01:37,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:01:37,739 INFO L93 Difference]: Finished difference Result 40598 states and 55544 transitions. [2018-11-12 17:01:37,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 17:01:37,740 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 463 [2018-11-12 17:01:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:01:37,822 INFO L225 Difference]: With dead ends: 40598 [2018-11-12 17:01:37,823 INFO L226 Difference]: Without dead ends: 19703 [2018-11-12 17:01:37,885 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 473 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2018-11-12 17:01:37,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2018-11-12 17:01:38,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 19412. [2018-11-12 17:01:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19412 states. [2018-11-12 17:01:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19412 states to 19412 states and 26633 transitions. [2018-11-12 17:01:38,341 INFO L78 Accepts]: Start accepts. Automaton has 19412 states and 26633 transitions. Word has length 463 [2018-11-12 17:01:38,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:01:38,342 INFO L480 AbstractCegarLoop]: Abstraction has 19412 states and 26633 transitions. [2018-11-12 17:01:38,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 17:01:38,342 INFO L276 IsEmpty]: Start isEmpty. Operand 19412 states and 26633 transitions. [2018-11-12 17:01:38,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2018-11-12 17:01:38,379 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:01:38,380 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:01:38,381 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:01:38,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:01:38,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1601314480, now seen corresponding path program 1 times [2018-11-12 17:01:38,382 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:01:38,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:01:38,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:01:38,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:01:38,383 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:01:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:01:39,013 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:01:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 135 proven. 168 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-11-12 17:01:39,880 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:01:39,880 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:01:39,881 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 805 with the following transitions: [2018-11-12 17:01:39,881 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1811], [1813], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-12 17:01:39,896 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:01:39,896 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:01:41,080 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:01:41,080 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Performed 14937 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14937 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 17:01:41,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:01:41,097 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:01:42,224 INFO L227 lantSequenceWeakener]: Weakened 368 states. On average, predicates are now at 77.67% of their original sizes. [2018-11-12 17:01:42,225 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:01:43,222 INFO L415 sIntCurrentIteration]: We unified 803 AI predicates to 803 [2018-11-12 17:01:43,222 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:01:43,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:01:43,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [8] total 37 [2018-11-12 17:01:43,223 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:01:43,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-12 17:01:43,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-12 17:01:43,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2018-11-12 17:01:43,225 INFO L87 Difference]: Start difference. First operand 19412 states and 26633 transitions. Second operand 31 states. Received shutdown request... [2018-11-12 17:02:09,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 17:02:09,607 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:02:09,612 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:02:09,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:02:09 BoogieIcfgContainer [2018-11-12 17:02:09,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:02:09,613 INFO L168 Benchmark]: Toolchain (without parser) took 210414.67 ms. Allocated memory was 1.5 GB in the beginning and 5.7 GB in the end (delta: 4.2 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-12 17:02:09,614 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:02:09,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1732.58 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-12 17:02:09,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 278.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -973.6 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2018-11-12 17:02:09,617 INFO L168 Benchmark]: Boogie Preprocessor took 225.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-12 17:02:09,617 INFO L168 Benchmark]: RCFGBuilder took 7858.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 510.8 MB). Peak memory consumption was 510.8 MB. Max. memory is 7.1 GB. [2018-11-12 17:02:09,618 INFO L168 Benchmark]: TraceAbstraction took 200313.66 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.4 GB). Free memory was 1.7 GB in the beginning and 3.3 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-12 17:02:09,623 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1732.58 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 278.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -973.6 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 225.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7858.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 510.8 MB). Peak memory consumption was 510.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200313.66 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.4 GB). Free memory was 1.7 GB in the beginning and 3.3 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 96). Cancelled while BasicCegarLoop was constructing difference of abstraction (19412states) and FLOYD_HOARE automaton (currently 13 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (476 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 200.2s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 183.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3336 SDtfs, 19275 SDslu, 1035 SDs, 0 SdLazy, 43520 SolverSat, 6743 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1601 GetRequests, 1503 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19412occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.6s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.99810016964026 AbsIntWeakeningRatio, 0.06363636363636363 AbsIntAvgWeakeningVarsNumRemoved, 12.37987012987013 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 435 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 2282 NumberOfCodeBlocks, 2282 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2274 ConstructedInterpolants, 0 QuantifiedInterpolants, 4081131 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 789/1267 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown