java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:48:27,104 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:48:27,106 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:48:27,121 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:48:27,123 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:48:27,124 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:48:27,126 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:48:27,129 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:48:27,131 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:48:27,132 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:48:27,134 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:48:27,134 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:48:27,135 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:48:27,138 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:48:27,146 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:48:27,147 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:48:27,148 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:48:27,150 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:48:27,155 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:48:27,157 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:48:27,160 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:48:27,162 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:48:27,165 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:48:27,165 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:48:27,168 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:48:27,169 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:48:27,170 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:48:27,172 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:48:27,173 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:48:27,175 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:48:27,176 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:48:27,176 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:48:27,177 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:48:27,178 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:48:27,179 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:48:27,179 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:48:27,180 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:48:27,203 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:48:27,203 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:48:27,204 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:48:27,204 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:48:27,205 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:48:27,205 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:48:27,205 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:48:27,205 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:48:27,205 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:48:27,206 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:48:27,206 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:48:27,206 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:48:27,207 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:48:27,207 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:48:27,207 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:48:27,208 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:48:27,208 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:48:27,208 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:48:27,208 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:48:27,208 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:48:27,209 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:48:27,209 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:48:27,209 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:48:27,209 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:48:27,209 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:48:27,209 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:48:27,211 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:48:27,211 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:48:27,211 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:48:27,211 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:48:27,212 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:48:27,212 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:48:27,212 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:48:27,212 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:48:27,262 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:48:27,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:48:27,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:48:27,281 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:48:27,282 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:48:27,283 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label02_true-unreach-call.c [2018-11-07 14:48:27,357 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4243c2d95/09b99165d7834c658421cee051dc2066/FLAGce49ae21f [2018-11-07 14:48:28,144 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:48:28,145 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label02_true-unreach-call.c [2018-11-07 14:48:28,179 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4243c2d95/09b99165d7834c658421cee051dc2066/FLAGce49ae21f [2018-11-07 14:48:28,196 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4243c2d95/09b99165d7834c658421cee051dc2066 [2018-11-07 14:48:28,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:48:28,209 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:48:28,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:48:28,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:48:28,215 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:48:28,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:48:28" (1/1) ... [2018-11-07 14:48:28,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c639f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:28, skipping insertion in model container [2018-11-07 14:48:28,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:48:28" (1/1) ... [2018-11-07 14:48:28,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:48:28,413 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:48:29,877 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:48:29,882 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:48:30,597 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:48:30,636 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:48:30,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:30 WrapperNode [2018-11-07 14:48:30,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:48:30,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:48:30,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:48:30,639 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:48:30,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:30" (1/1) ... [2018-11-07 14:48:31,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:30" (1/1) ... [2018-11-07 14:48:31,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:48:31,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:48:31,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:48:31,033 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:48:31,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:30" (1/1) ... [2018-11-07 14:48:31,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:30" (1/1) ... [2018-11-07 14:48:31,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:30" (1/1) ... [2018-11-07 14:48:31,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:30" (1/1) ... [2018-11-07 14:48:31,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:30" (1/1) ... [2018-11-07 14:48:31,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:30" (1/1) ... [2018-11-07 14:48:31,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:30" (1/1) ... [2018-11-07 14:48:31,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:48:31,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:48:31,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:48:31,332 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:48:31,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:30" (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 14:48:31,399 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:48:31,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:48:31,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:48:31,400 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:48:31,400 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:48:31,400 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:48:31,400 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:48:31,401 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:48:31,401 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:48:31,401 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:48:31,401 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:48:31,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:48:31,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:48:31,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:48:31,402 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:48:42,136 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:48:42,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:48:42 BoogieIcfgContainer [2018-11-07 14:48:42,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:48:42,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:48:42,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:48:42,142 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:48:42,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:48:28" (1/3) ... [2018-11-07 14:48:42,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb62908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:48:42, skipping insertion in model container [2018-11-07 14:48:42,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:48:30" (2/3) ... [2018-11-07 14:48:42,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb62908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:48:42, skipping insertion in model container [2018-11-07 14:48:42,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:48:42" (3/3) ... [2018-11-07 14:48:42,146 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label02_true-unreach-call.c [2018-11-07 14:48:42,155 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:48:42,166 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:48:42,183 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:48:42,229 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:48:42,230 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:48:42,230 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:48:42,230 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:48:42,230 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:48:42,230 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:48:42,230 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:48:42,230 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:48:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 14:48:42,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-07 14:48:42,283 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:48:42,284 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:48:42,286 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:48:42,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:48:42,292 INFO L82 PathProgramCache]: Analyzing trace with hash 608823044, now seen corresponding path program 1 times [2018-11-07 14:48:42,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:48:42,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:48:42,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:48:42,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:48:42,351 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:48:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:48:42,785 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 14:48:42,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:48:42,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:48:42,788 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:48:42,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:48:42,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:48:42,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:48:42,816 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 14:48:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:48:59,079 INFO L93 Difference]: Finished difference Result 4106 states and 7670 transitions. [2018-11-07 14:48:59,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:48:59,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-11-07 14:48:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:48:59,149 INFO L225 Difference]: With dead ends: 4106 [2018-11-07 14:48:59,150 INFO L226 Difference]: Without dead ends: 2980 [2018-11-07 14:48:59,167 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:48:59,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2018-11-07 14:48:59,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2850. [2018-11-07 14:48:59,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2850 states. [2018-11-07 14:48:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 5076 transitions. [2018-11-07 14:48:59,394 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 5076 transitions. Word has length 46 [2018-11-07 14:48:59,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:48:59,395 INFO L480 AbstractCegarLoop]: Abstraction has 2850 states and 5076 transitions. [2018-11-07 14:48:59,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:48:59,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 5076 transitions. [2018-11-07 14:48:59,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-07 14:48:59,404 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:48:59,404 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:48:59,405 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:48:59,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:48:59,405 INFO L82 PathProgramCache]: Analyzing trace with hash -248268951, now seen corresponding path program 1 times [2018-11-07 14:48:59,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:48:59,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:48:59,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:48:59,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:48:59,407 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:48:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:48:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:48:59,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:48:59,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:48:59,838 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:48:59,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:48:59,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:48:59,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:48:59,841 INFO L87 Difference]: Start difference. First operand 2850 states and 5076 transitions. Second operand 6 states. [2018-11-07 14:49:14,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:49:14,863 INFO L93 Difference]: Finished difference Result 10636 states and 19581 transitions. [2018-11-07 14:49:14,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:49:14,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-11-07 14:49:14,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:49:14,914 INFO L225 Difference]: With dead ends: 10636 [2018-11-07 14:49:14,914 INFO L226 Difference]: Without dead ends: 7792 [2018-11-07 14:49:14,933 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:49:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-11-07 14:49:15,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7730. [2018-11-07 14:49:15,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7730 states. [2018-11-07 14:49:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7730 states to 7730 states and 12374 transitions. [2018-11-07 14:49:15,163 INFO L78 Accepts]: Start accepts. Automaton has 7730 states and 12374 transitions. Word has length 117 [2018-11-07 14:49:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:49:15,164 INFO L480 AbstractCegarLoop]: Abstraction has 7730 states and 12374 transitions. [2018-11-07 14:49:15,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:49:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 7730 states and 12374 transitions. [2018-11-07 14:49:15,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 14:49:15,170 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:49:15,171 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:49:15,171 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:49:15,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:49:15,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1062052776, now seen corresponding path program 1 times [2018-11-07 14:49:15,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:49:15,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:15,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:49:15,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:15,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:49:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:49:15,519 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:49:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:49:15,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:49:15,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:49:15,630 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:49:15,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:49:15,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:49:15,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:49:15,632 INFO L87 Difference]: Start difference. First operand 7730 states and 12374 transitions. Second operand 6 states. [2018-11-07 14:49:26,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:49:26,604 INFO L93 Difference]: Finished difference Result 20527 states and 33999 transitions. [2018-11-07 14:49:26,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:49:26,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-11-07 14:49:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:49:26,690 INFO L225 Difference]: With dead ends: 20527 [2018-11-07 14:49:26,690 INFO L226 Difference]: Without dead ends: 12803 [2018-11-07 14:49:26,731 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:49:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12803 states. [2018-11-07 14:49:27,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12803 to 12726. [2018-11-07 14:49:27,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12726 states. [2018-11-07 14:49:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12726 states to 12726 states and 19313 transitions. [2018-11-07 14:49:27,044 INFO L78 Accepts]: Start accepts. Automaton has 12726 states and 19313 transitions. Word has length 120 [2018-11-07 14:49:27,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:49:27,044 INFO L480 AbstractCegarLoop]: Abstraction has 12726 states and 19313 transitions. [2018-11-07 14:49:27,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:49:27,045 INFO L276 IsEmpty]: Start isEmpty. Operand 12726 states and 19313 transitions. [2018-11-07 14:49:27,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 14:49:27,048 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:49:27,048 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:49:27,048 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:49:27,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:49:27,049 INFO L82 PathProgramCache]: Analyzing trace with hash 2127704900, now seen corresponding path program 1 times [2018-11-07 14:49:27,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:49:27,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:27,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:49:27,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:27,050 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:49:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:49:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:49:27,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:49:27,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:49:27,366 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:49:27,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:49:27,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:49:27,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:49:27,367 INFO L87 Difference]: Start difference. First operand 12726 states and 19313 transitions. Second operand 5 states. [2018-11-07 14:49:36,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:49:36,768 INFO L93 Difference]: Finished difference Result 38409 states and 61846 transitions. [2018-11-07 14:49:36,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:49:36,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-11-07 14:49:36,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:49:36,882 INFO L225 Difference]: With dead ends: 38409 [2018-11-07 14:49:36,882 INFO L226 Difference]: Without dead ends: 25689 [2018-11-07 14:49:36,946 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:49:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25689 states. [2018-11-07 14:49:37,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25689 to 25396. [2018-11-07 14:49:37,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25396 states. [2018-11-07 14:49:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25396 states to 25396 states and 37275 transitions. [2018-11-07 14:49:37,589 INFO L78 Accepts]: Start accepts. Automaton has 25396 states and 37275 transitions. Word has length 130 [2018-11-07 14:49:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:49:37,589 INFO L480 AbstractCegarLoop]: Abstraction has 25396 states and 37275 transitions. [2018-11-07 14:49:37,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:49:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 25396 states and 37275 transitions. [2018-11-07 14:49:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 14:49:37,594 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:49:37,594 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:49:37,595 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:49:37,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:49:37,595 INFO L82 PathProgramCache]: Analyzing trace with hash -334570632, now seen corresponding path program 1 times [2018-11-07 14:49:37,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:49:37,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:37,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:49:37,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:37,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:49:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:49:37,940 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:49:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:49:38,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:49:38,508 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:49:38,509 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-11-07 14:49:38,514 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2895], [2897], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 14:49:38,581 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:49:38,581 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:49:40,102 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:49:40,104 INFO L272 AbstractInterpreter]: Visited 108 different actions 311 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 14:49:40,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:49:40,146 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:49:40,749 INFO L227 lantSequenceWeakener]: Weakened 94 states. On average, predicates are now at 72.45% of their original sizes. [2018-11-07 14:49:40,750 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:49:42,051 INFO L415 sIntCurrentIteration]: We unified 146 AI predicates to 146 [2018-11-07 14:49:42,051 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:49:42,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:49:42,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [7] total 22 [2018-11-07 14:49:42,053 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:49:42,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 14:49:42,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 14:49:42,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-11-07 14:49:42,054 INFO L87 Difference]: Start difference. First operand 25396 states and 37275 transitions. Second operand 17 states. [2018-11-07 14:49:52,275 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown