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_label20_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:27:26,183 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:27:26,185 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:27:26,197 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:27:26,198 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:27:26,199 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:27:26,200 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:27:26,202 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:27:26,204 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:27:26,205 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:27:26,206 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:27:26,207 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:27:26,208 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:27:26,209 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:27:26,210 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:27:26,211 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:27:26,212 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:27:26,214 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:27:26,216 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:27:26,218 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:27:26,219 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:27:26,220 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:27:26,223 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:27:26,224 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:27:26,224 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:27:26,225 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:27:26,226 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:27:26,227 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:27:26,228 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:27:26,229 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:27:26,230 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:27:26,230 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:27:26,231 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:27:26,231 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:27:26,232 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:27:26,233 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:27:26,234 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 [2018-11-07 18:27:26,251 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:27:26,251 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:27:26,252 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:27:26,252 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:27:26,253 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:27:26,253 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:27:26,253 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:27:26,253 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:27:26,254 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:27:26,254 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:27:26,254 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:27:26,254 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:27:26,255 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:27:26,255 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:27:26,256 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:27:26,256 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:27:26,256 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:27:26,256 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:27:26,256 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:27:26,257 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:27:26,257 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:27:26,257 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:27:26,257 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:27:26,258 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:27:26,258 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:27:26,258 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:27:26,258 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:27:26,258 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:27:26,259 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:27:26,259 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:27:26,259 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:27:26,259 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:27:26,260 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:27:26,260 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:27:26,260 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:27:26,305 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:27:26,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:27:26,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:27:26,323 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:27:26,324 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:27:26,325 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label20_false-unreach-call.c [2018-11-07 18:27:26,385 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df58c6714/b98b80c118954f0cad85488b1d86efdd/FLAGb97c44b49 [2018-11-07 18:27:27,164 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:27:27,165 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label20_false-unreach-call.c [2018-11-07 18:27:27,192 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df58c6714/b98b80c118954f0cad85488b1d86efdd/FLAGb97c44b49 [2018-11-07 18:27:27,210 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df58c6714/b98b80c118954f0cad85488b1d86efdd [2018-11-07 18:27:27,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:27:27,224 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:27:27,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:27:27,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:27:27,232 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:27:27,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:27:27" (1/1) ... [2018-11-07 18:27:27,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab1c4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:27, skipping insertion in model container [2018-11-07 18:27:27,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:27:27" (1/1) ... [2018-11-07 18:27:27,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:27:27,399 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:27:28,522 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:27:28,527 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:27:28,933 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:27:28,962 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:27:28,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:28 WrapperNode [2018-11-07 18:27:28,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:27:28,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:27:28,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:27:28,965 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:27:28,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:28" (1/1) ... [2018-11-07 18:27:29,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:28" (1/1) ... [2018-11-07 18:27:29,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:27:29,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:27:29,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:27:29,266 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:27:29,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:28" (1/1) ... [2018-11-07 18:27:29,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:28" (1/1) ... [2018-11-07 18:27:29,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:28" (1/1) ... [2018-11-07 18:27:29,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:28" (1/1) ... [2018-11-07 18:27:29,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:28" (1/1) ... [2018-11-07 18:27:29,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:28" (1/1) ... [2018-11-07 18:27:29,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:28" (1/1) ... [2018-11-07 18:27:29,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:27:29,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:27:29,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:27:29,492 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:27:29,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:27:29,567 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:27:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:27:29,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:27:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 18:27:29,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 18:27:29,568 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:27:29,569 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:27:29,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:27:29,569 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:27:29,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:27:29,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:27:29,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:27:29,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:27:37,149 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:27:37,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:27:37 BoogieIcfgContainer [2018-11-07 18:27:37,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:27:37,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:27:37,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:27:37,154 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:27:37,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:27:27" (1/3) ... [2018-11-07 18:27:37,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105d2efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:27:37, skipping insertion in model container [2018-11-07 18:27:37,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:28" (2/3) ... [2018-11-07 18:27:37,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105d2efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:27:37, skipping insertion in model container [2018-11-07 18:27:37,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:27:37" (3/3) ... [2018-11-07 18:27:37,158 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label20_false-unreach-call.c [2018-11-07 18:27:37,169 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:27:37,179 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:27:37,198 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:27:37,251 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:27:37,251 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:27:37,251 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:27:37,252 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:27:37,252 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:27:37,252 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:27:37,252 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:27:37,252 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:27:37,313 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 18:27:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-07 18:27:37,321 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:27:37,322 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:27:37,324 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:27:37,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:27:37,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1382833663, now seen corresponding path program 1 times [2018-11-07 18:27:37,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:27:37,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:27:37,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:27:37,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:27:37,395 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:27:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:27:37,683 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:27:37,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:27:37,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:27:37,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:27:37,758 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:27:37,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:27:37,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:27:37,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:27:37,787 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 18:27:44,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:27:44,657 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 18:27:44,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:27:44,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-07 18:27:44,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:27:44,705 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 18:27:44,705 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 18:27:44,725 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:27:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 18:27:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 18:27:44,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 18:27:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-07 18:27:44,909 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 13 [2018-11-07 18:27:44,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:27:44,909 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-07 18:27:44,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:27:44,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-07 18:27:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-07 18:27:44,916 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:27:44,917 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:27:44,917 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:27:44,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:27:44,917 INFO L82 PathProgramCache]: Analyzing trace with hash -203266796, now seen corresponding path program 1 times [2018-11-07 18:27:44,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:27:44,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:27:44,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:27:44,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:27:44,919 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:27:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:27:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:27:45,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:27:45,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:27:45,225 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:27:45,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:27:45,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:27:45,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:27:45,228 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 5 states. [2018-11-07 18:27:53,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:27:53,289 INFO L93 Difference]: Finished difference Result 3698 states and 6787 transitions. [2018-11-07 18:27:53,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:27:53,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2018-11-07 18:27:53,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:27:53,310 INFO L225 Difference]: With dead ends: 3698 [2018-11-07 18:27:53,311 INFO L226 Difference]: Without dead ends: 2230 [2018-11-07 18:27:53,316 INFO L604 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 [2018-11-07 18:27:53,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2018-11-07 18:27:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2209. [2018-11-07 18:27:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2018-11-07 18:27:53,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3833 transitions. [2018-11-07 18:27:53,386 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3833 transitions. Word has length 85 [2018-11-07 18:27:53,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:27:53,387 INFO L480 AbstractCegarLoop]: Abstraction has 2209 states and 3833 transitions. [2018-11-07 18:27:53,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:27:53,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3833 transitions. [2018-11-07 18:27:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-07 18:27:53,394 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:27:53,394 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:27:53,394 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:27:53,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:27:53,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1496525893, now seen corresponding path program 1 times [2018-11-07 18:27:53,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:27:53,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:27:53,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:27:53,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:27:53,398 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:27:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:27:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:27:53,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:27:53,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:27:53,766 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:27:53,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:27:53,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:27:53,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:27:53,768 INFO L87 Difference]: Start difference. First operand 2209 states and 3833 transitions. Second operand 6 states. [2018-11-07 18:28:01,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:28:01,387 INFO L93 Difference]: Finished difference Result 5866 states and 10122 transitions. [2018-11-07 18:28:01,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:28:01,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-11-07 18:28:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:28:01,421 INFO L225 Difference]: With dead ends: 5866 [2018-11-07 18:28:01,421 INFO L226 Difference]: Without dead ends: 3663 [2018-11-07 18:28:01,430 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:28:01,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2018-11-07 18:28:01,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3639. [2018-11-07 18:28:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2018-11-07 18:28:01,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5517 transitions. [2018-11-07 18:28:01,549 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5517 transitions. Word has length 108 [2018-11-07 18:28:01,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:28:01,550 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 5517 transitions. [2018-11-07 18:28:01,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:28:01,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5517 transitions. [2018-11-07 18:28:01,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-07 18:28:01,563 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:28:01,564 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:28:01,564 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:28:01,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:28:01,565 INFO L82 PathProgramCache]: Analyzing trace with hash 885619213, now seen corresponding path program 1 times [2018-11-07 18:28:01,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:28:01,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:01,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:28:01,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:01,567 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:28:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:28:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:28:01,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:28:01,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:28:01,793 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:28:01,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:28:01,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:28:01,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:28:01,794 INFO L87 Difference]: Start difference. First operand 3639 states and 5517 transitions. Second operand 6 states. [2018-11-07 18:28:08,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:28:08,903 INFO L93 Difference]: Finished difference Result 8735 states and 13271 transitions. [2018-11-07 18:28:08,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:28:08,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-11-07 18:28:08,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:28:08,927 INFO L225 Difference]: With dead ends: 8735 [2018-11-07 18:28:08,927 INFO L226 Difference]: Without dead ends: 5102 [2018-11-07 18:28:08,939 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:28:08,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-11-07 18:28:09,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5084. [2018-11-07 18:28:09,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2018-11-07 18:28:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6940 transitions. [2018-11-07 18:28:09,050 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6940 transitions. Word has length 112 [2018-11-07 18:28:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:28:09,051 INFO L480 AbstractCegarLoop]: Abstraction has 5084 states and 6940 transitions. [2018-11-07 18:28:09,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:28:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6940 transitions. [2018-11-07 18:28:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 18:28:09,060 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:28:09,060 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:28:09,060 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:28:09,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:28:09,061 INFO L82 PathProgramCache]: Analyzing trace with hash 228991656, now seen corresponding path program 1 times [2018-11-07 18:28:09,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:28:09,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:09,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:28:09,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:09,066 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:28:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:28:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:28:09,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:28:09,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:28:09,271 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:28:09,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:28:09,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:28:09,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:28:09,273 INFO L87 Difference]: Start difference. First operand 5084 states and 6940 transitions. Second operand 6 states. [2018-11-07 18:28:15,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:28:15,007 INFO L93 Difference]: Finished difference Result 13307 states and 18750 transitions. [2018-11-07 18:28:15,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:28:15,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-07 18:28:15,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:28:15,059 INFO L225 Difference]: With dead ends: 13307 [2018-11-07 18:28:15,059 INFO L226 Difference]: Without dead ends: 8229 [2018-11-07 18:28:15,071 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:28:15,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2018-11-07 18:28:15,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8128. [2018-11-07 18:28:15,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8128 states. [2018-11-07 18:28:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 10817 transitions. [2018-11-07 18:28:15,263 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 10817 transitions. Word has length 143 [2018-11-07 18:28:15,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:28:15,263 INFO L480 AbstractCegarLoop]: Abstraction has 8128 states and 10817 transitions. [2018-11-07 18:28:15,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:28:15,264 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 10817 transitions. [2018-11-07 18:28:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 18:28:15,267 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:28:15,268 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:28:15,268 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:28:15,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:28:15,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1774516114, now seen corresponding path program 1 times [2018-11-07 18:28:15,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:28:15,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:15,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:28:15,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:15,270 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:28:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:28:15,640 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:28:15,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:28:15,640 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:28:15,641 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-11-07 18:28:15,644 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1627], [1629], [1632], [1640], [1648], [1656], [1664], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [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], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 18:28:15,688 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:28:15,689 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:28:16,265 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:28:16,267 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:28:16,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:28:16,324 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:28:16,791 INFO L227 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 77.12% of their original sizes. [2018-11-07 18:28:16,791 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:28:16,954 INFO L415 sIntCurrentIteration]: We unified 175 AI predicates to 175 [2018-11-07 18:28:16,954 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:28:16,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:28:16,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 18:28:16,955 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:28:16,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:28:16,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:28:16,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:28:16,957 INFO L87 Difference]: Start difference. First operand 8128 states and 10817 transitions. Second operand 7 states. [2018-11-07 18:28:25,228 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:28:55,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:28:55,390 INFO L93 Difference]: Finished difference Result 16955 states and 22499 transitions. [2018-11-07 18:28:55,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:28:55,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2018-11-07 18:28:55,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:28:55,421 INFO L225 Difference]: With dead ends: 16955 [2018-11-07 18:28:55,421 INFO L226 Difference]: Without dead ends: 8833 [2018-11-07 18:28:55,437 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:28:55,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8833 states. [2018-11-07 18:28:55,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8833 to 8831. [2018-11-07 18:28:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8831 states. [2018-11-07 18:28:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8831 states to 8831 states and 11532 transitions. [2018-11-07 18:28:55,636 INFO L78 Accepts]: Start accepts. Automaton has 8831 states and 11532 transitions. Word has length 176 [2018-11-07 18:28:55,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:28:55,637 INFO L480 AbstractCegarLoop]: Abstraction has 8831 states and 11532 transitions. [2018-11-07 18:28:55,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:28:55,637 INFO L276 IsEmpty]: Start isEmpty. Operand 8831 states and 11532 transitions. [2018-11-07 18:28:55,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-11-07 18:28:55,645 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:28:55,646 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 18:28:55,646 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:28:55,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:28:55,647 INFO L82 PathProgramCache]: Analyzing trace with hash -420088940, now seen corresponding path program 1 times [2018-11-07 18:28:55,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:28:55,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:55,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:28:55,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:55,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:28:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:28:56,192 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:28:56,393 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:28:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 77 proven. 171 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:28:56,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:28:56,816 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:28:56,816 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-11-07 18:28:56,817 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1627], [1629], [1632], [1640], [1648], [1656], [1664], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [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], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [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], [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] [2018-11-07 18:28:56,828 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:28:56,828 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:28:57,977 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:28:57,978 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:28:58,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:28:58,016 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:28:59,030 INFO L227 lantSequenceWeakener]: Weakened 60 states. On average, predicates are now at 77.53% of their original sizes. [2018-11-07 18:28:59,030 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:29:00,556 INFO L415 sIntCurrentIteration]: We unified 362 AI predicates to 362 [2018-11-07 18:29:00,556 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:29:00,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:29:00,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [11] total 31 [2018-11-07 18:29:00,556 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:29:00,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 18:29:00,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 18:29:00,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2018-11-07 18:29:00,558 INFO L87 Difference]: Start difference. First operand 8831 states and 11532 transitions. Second operand 22 states. [2018-11-07 18:29:32,353 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:30:26,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:30:26,596 INFO L93 Difference]: Finished difference Result 19558 states and 25691 transitions. [2018-11-07 18:30:26,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-07 18:30:26,596 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 363 [2018-11-07 18:30:26,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:30:26,625 INFO L225 Difference]: With dead ends: 19558 [2018-11-07 18:30:26,626 INFO L226 Difference]: Without dead ends: 11436 [2018-11-07 18:30:26,644 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 377 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=253, Invalid=1079, Unknown=0, NotChecked=0, Total=1332 [2018-11-07 18:30:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11436 states. [2018-11-07 18:30:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11436 to 11427. [2018-11-07 18:30:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11427 states. [2018-11-07 18:30:26,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11427 states to 11427 states and 14163 transitions. [2018-11-07 18:30:26,868 INFO L78 Accepts]: Start accepts. Automaton has 11427 states and 14163 transitions. Word has length 363 [2018-11-07 18:30:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:30:26,869 INFO L480 AbstractCegarLoop]: Abstraction has 11427 states and 14163 transitions. [2018-11-07 18:30:26,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 18:30:26,869 INFO L276 IsEmpty]: Start isEmpty. Operand 11427 states and 14163 transitions. [2018-11-07 18:30:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2018-11-07 18:30:26,892 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:30:26,893 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:30:26,893 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:30:26,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:30:26,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1122286405, now seen corresponding path program 1 times [2018-11-07 18:30:26,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:30:26,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:26,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:30:26,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:26,895 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:30:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:30:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 24 proven. 214 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-07 18:30:28,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:30:28,848 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:30:28,849 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 705 with the following transitions: [2018-11-07 18:30:28,850 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], [1627], [1629], [1632], [1640], [1648], [1656], [1664], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [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], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [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], [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] [2018-11-07 18:30:28,875 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:30:28,875 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:30:30,172 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:30:30,172 INFO L272 AbstractInterpreter]: Visited 537 different actions 1070 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:30:30,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:30:30,177 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:30:31,104 INFO L227 lantSequenceWeakener]: Weakened 395 states. On average, predicates are now at 77.38% of their original sizes. [2018-11-07 18:30:31,105 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:30:32,133 INFO L415 sIntCurrentIteration]: We unified 703 AI predicates to 703 [2018-11-07 18:30:32,134 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:30:32,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:30:32,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [6] total 35 [2018-11-07 18:30:32,134 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:30:32,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-07 18:30:32,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-07 18:30:32,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2018-11-07 18:30:32,136 INFO L87 Difference]: Start difference. First operand 11427 states and 14163 transitions. Second operand 31 states. Received shutdown request... [2018-11-07 18:31:05,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 18:31:05,344 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:31:05,348 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:31:05,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:31:05 BoogieIcfgContainer [2018-11-07 18:31:05,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:31:05,350 INFO L168 Benchmark]: Toolchain (without parser) took 218127.39 ms. Allocated memory was 1.5 GB in the beginning and 5.4 GB in the end (delta: 3.9 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 3.9 GB. Max. memory is 7.1 GB. [2018-11-07 18:31:05,351 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-07 18:31:05,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1738.63 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. [2018-11-07 18:31:05,353 INFO L168 Benchmark]: Boogie Procedure Inliner took 300.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -940.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:31:05,354 INFO L168 Benchmark]: Boogie Preprocessor took 225.64 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: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:31:05,354 INFO L168 Benchmark]: RCFGBuilder took 7658.18 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: 506.0 MB). Peak memory consumption was 506.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:31:05,355 INFO L168 Benchmark]: TraceAbstraction took 208198.13 ms. Allocated memory was 2.3 GB in the beginning and 5.4 GB in the end (delta: 3.1 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 3.4 GB. Max. memory is 7.1 GB. [2018-11-07 18:31:05,363 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1738.63 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 300.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -940.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 225.64 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: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7658.18 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: 506.0 MB). Peak memory consumption was 506.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208198.13 ms. Allocated memory was 2.3 GB in the beginning and 5.4 GB in the end (delta: 3.1 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 3.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 27). Cancelled while BasicCegarLoop was constructing difference of abstraction (11427states) and FLOYD_HOARE automaton (currently 26 states, 31 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 52 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 208.1s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 193.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2230 SDtfs, 24283 SDslu, 1595 SDs, 0 SdLazy, 51016 SolverSat, 6237 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1322 GetRequests, 1196 SyntacticMatches, 6 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11427occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.2s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9976405332629038 AbsIntWeakeningRatio, 0.07903225806451612 AbsIntAvgWeakeningVarsNumRemoved, 13.396774193548387 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 175 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1704 NumberOfCodeBlocks, 1704 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1696 ConstructedInterpolants, 0 QuantifiedInterpolants, 3153250 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 162/614 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown