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/Problem19_label50_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:42:54,124 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:42:54,126 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:42:54,138 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:42:54,139 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:42:54,140 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:42:54,141 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:42:54,143 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:42:54,144 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:42:54,145 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:42:54,146 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:42:54,146 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:42:54,147 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:42:54,148 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:42:54,150 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:42:54,150 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:42:54,151 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:42:54,153 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:42:54,157 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:42:54,162 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:42:54,163 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:42:54,167 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:42:54,173 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:42:54,173 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:42:54,173 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:42:54,174 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:42:54,177 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:42:54,178 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:42:54,181 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:42:54,183 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:42:54,183 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:42:54,184 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 12:42:54,185 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:42:54,185 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:42:54,186 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:42:54,187 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:42:54,187 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 12:42:54,206 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:42:54,207 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:42:54,208 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:42:54,211 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:42:54,211 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:42:54,211 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:42:54,211 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:42:54,212 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:42:54,212 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:42:54,212 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:42:54,212 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:42:54,212 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:42:54,213 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:42:54,213 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:42:54,217 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:42:54,217 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:42:54,217 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:42:54,217 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:42:54,218 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:42:54,218 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:42:54,218 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:42:54,218 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:42:54,218 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:42:54,218 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:42:54,219 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:42:54,219 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:42:54,219 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:42:54,219 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:42:54,219 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:42:54,222 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:42:54,222 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:42:54,222 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:42:54,222 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:42:54,223 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:42:54,283 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:42:54,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:42:54,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:42:54,307 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:42:54,307 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:42:54,308 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c [2018-11-07 12:42:54,365 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cbce5bb9/9d8b132c8153420dafd52829f630470e/FLAG7abeb68a6 [2018-11-07 12:42:55,242 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:42:55,243 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c [2018-11-07 12:42:55,288 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cbce5bb9/9d8b132c8153420dafd52829f630470e/FLAG7abeb68a6 [2018-11-07 12:42:55,307 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cbce5bb9/9d8b132c8153420dafd52829f630470e [2018-11-07 12:42:55,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:42:55,325 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:42:55,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:42:55,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:42:55,331 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:42:55,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:42:55" (1/1) ... [2018-11-07 12:42:55,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692e9784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:55, skipping insertion in model container [2018-11-07 12:42:55,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:42:55" (1/1) ... [2018-11-07 12:42:55,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:42:55,621 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:42:57,571 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:42:57,577 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:42:58,704 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:42:58,755 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:42:58,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:58 WrapperNode [2018-11-07 12:42:58,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:42:58,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:42:58,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:42:58,758 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:42:58,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:58" (1/1) ... [2018-11-07 12:42:59,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:58" (1/1) ... [2018-11-07 12:42:59,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:42:59,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:42:59,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:42:59,298 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:42:59,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:58" (1/1) ... [2018-11-07 12:42:59,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:58" (1/1) ... [2018-11-07 12:42:59,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:58" (1/1) ... [2018-11-07 12:42:59,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:58" (1/1) ... [2018-11-07 12:42:59,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:58" (1/1) ... [2018-11-07 12:42:59,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:58" (1/1) ... [2018-11-07 12:42:59,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:58" (1/1) ... [2018-11-07 12:42:59,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:42:59,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:42:59,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:42:59,658 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:42:59,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:58" (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 12:42:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:42:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:42:59,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:42:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 12:42:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 12:42:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 12:42:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 12:42:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 12:42:59,726 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 12:42:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 12:42:59,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 12:42:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 12:42:59,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 12:42:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:42:59,728 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:42:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:42:59,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:42:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:42:59,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:43:13,862 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:43:13,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:43:13 BoogieIcfgContainer [2018-11-07 12:43:13,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:43:13,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:43:13,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:43:13,868 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:43:13,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:42:55" (1/3) ... [2018-11-07 12:43:13,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa70df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:43:13, skipping insertion in model container [2018-11-07 12:43:13,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:42:58" (2/3) ... [2018-11-07 12:43:13,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa70df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:43:13, skipping insertion in model container [2018-11-07 12:43:13,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:43:13" (3/3) ... [2018-11-07 12:43:13,872 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label50_false-unreach-call.c [2018-11-07 12:43:13,882 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:43:13,892 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:43:13,907 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:43:13,962 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:43:13,963 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:43:13,963 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:43:13,963 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:43:13,963 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:43:13,963 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:43:13,963 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:43:13,964 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:43:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 12:43:14,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-07 12:43:14,035 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:43:14,036 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] [2018-11-07 12:43:14,039 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:43:14,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:43:14,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1858672342, now seen corresponding path program 1 times [2018-11-07 12:43:14,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:43:14,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:43:14,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:43:14,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:43:14,101 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:43:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:43:14,536 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 12:43:14,558 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 12:43:14,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:43:14,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:43:14,566 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:43:14,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:43:14,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:43:14,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:43:14,586 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-07 12:43:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:43:36,514 INFO L93 Difference]: Finished difference Result 6510 states and 12381 transitions. [2018-11-07 12:43:36,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:43:36,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-07 12:43:36,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:43:36,576 INFO L225 Difference]: With dead ends: 6510 [2018-11-07 12:43:36,577 INFO L226 Difference]: Without dead ends: 4726 [2018-11-07 12:43:36,591 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:43:36,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2018-11-07 12:43:36,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4687. [2018-11-07 12:43:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4687 states. [2018-11-07 12:43:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 7413 transitions. [2018-11-07 12:43:36,935 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 7413 transitions. Word has length 27 [2018-11-07 12:43:36,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:43:36,936 INFO L480 AbstractCegarLoop]: Abstraction has 4687 states and 7413 transitions. [2018-11-07 12:43:36,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:43:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 7413 transitions. [2018-11-07 12:43:36,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-07 12:43:36,942 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:43:36,942 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:43:36,942 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:43:36,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:43:36,943 INFO L82 PathProgramCache]: Analyzing trace with hash -80921580, now seen corresponding path program 1 times [2018-11-07 12:43:36,943 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:43:36,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:43:36,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:43:36,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:43:36,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:43:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:43:37,303 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:43:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:43:37,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:43:37,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:43:37,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:43:37,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:43:37,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:43:37,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:43:37,692 INFO L87 Difference]: Start difference. First operand 4687 states and 7413 transitions. Second operand 6 states. [2018-11-07 12:44:02,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:44:02,963 INFO L93 Difference]: Finished difference Result 17857 states and 28865 transitions. [2018-11-07 12:44:02,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:44:02,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-11-07 12:44:02,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:44:03,034 INFO L225 Difference]: With dead ends: 17857 [2018-11-07 12:44:03,034 INFO L226 Difference]: Without dead ends: 13176 [2018-11-07 12:44:03,054 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:44:03,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13176 states. [2018-11-07 12:44:03,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13176 to 13105. [2018-11-07 12:44:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13105 states. [2018-11-07 12:44:03,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13105 states to 13105 states and 18702 transitions. [2018-11-07 12:44:03,520 INFO L78 Accepts]: Start accepts. Automaton has 13105 states and 18702 transitions. Word has length 99 [2018-11-07 12:44:03,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:44:03,521 INFO L480 AbstractCegarLoop]: Abstraction has 13105 states and 18702 transitions. [2018-11-07 12:44:03,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:44:03,521 INFO L276 IsEmpty]: Start isEmpty. Operand 13105 states and 18702 transitions. [2018-11-07 12:44:03,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-07 12:44:03,525 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:44:03,526 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:44:03,526 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:44:03,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:44:03,526 INFO L82 PathProgramCache]: Analyzing trace with hash -407489059, now seen corresponding path program 1 times [2018-11-07 12:44:03,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:44:03,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:44:03,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:44:03,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:44:03,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:44:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:44:03,822 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:44:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:44:03,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:44:03,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:44:03,930 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:44:03,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:44:03,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:44:03,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:44:03,932 INFO L87 Difference]: Start difference. First operand 13105 states and 18702 transitions. Second operand 6 states. [2018-11-07 12:44:23,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:44:23,853 INFO L93 Difference]: Finished difference Result 43695 states and 64626 transitions. [2018-11-07 12:44:23,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:44:23,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-11-07 12:44:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:44:23,985 INFO L225 Difference]: With dead ends: 43695 [2018-11-07 12:44:23,985 INFO L226 Difference]: Without dead ends: 30596 [2018-11-07 12:44:24,043 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 12:44:24,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30596 states. [2018-11-07 12:44:24,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30596 to 30433. [2018-11-07 12:44:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30433 states. [2018-11-07 12:44:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30433 states to 30433 states and 42880 transitions. [2018-11-07 12:44:24,758 INFO L78 Accepts]: Start accepts. Automaton has 30433 states and 42880 transitions. Word has length 101 [2018-11-07 12:44:24,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:44:24,758 INFO L480 AbstractCegarLoop]: Abstraction has 30433 states and 42880 transitions. [2018-11-07 12:44:24,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:44:24,759 INFO L276 IsEmpty]: Start isEmpty. Operand 30433 states and 42880 transitions. [2018-11-07 12:44:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-07 12:44:24,769 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:44:24,769 INFO L375 BasicCegarLoop]: trace histogram [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 12:44:24,770 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:44:24,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:44:24,770 INFO L82 PathProgramCache]: Analyzing trace with hash -835408938, now seen corresponding path program 1 times [2018-11-07 12:44:24,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:44:24,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:44:24,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:44:24,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:44:24,772 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:44:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:44:25,239 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-11-07 12:44:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:44:25,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:44:25,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:44:25,514 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:44:25,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:44:25,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:44:25,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:44:25,516 INFO L87 Difference]: Start difference. First operand 30433 states and 42880 transitions. Second operand 6 states. [2018-11-07 12:44:40,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:44:40,989 INFO L93 Difference]: Finished difference Result 92582 states and 135336 transitions. [2018-11-07 12:44:40,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 12:44:40,990 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-11-07 12:44:40,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:44:41,214 INFO L225 Difference]: With dead ends: 92582 [2018-11-07 12:44:41,215 INFO L226 Difference]: Without dead ends: 62155 [2018-11-07 12:44:41,301 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 12:44:41,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62155 states. [2018-11-07 12:44:42,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62155 to 61699. [2018-11-07 12:44:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61699 states. [2018-11-07 12:44:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61699 states to 61699 states and 86749 transitions. [2018-11-07 12:44:42,578 INFO L78 Accepts]: Start accepts. Automaton has 61699 states and 86749 transitions. Word has length 109 [2018-11-07 12:44:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:44:42,579 INFO L480 AbstractCegarLoop]: Abstraction has 61699 states and 86749 transitions. [2018-11-07 12:44:42,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:44:42,579 INFO L276 IsEmpty]: Start isEmpty. Operand 61699 states and 86749 transitions. [2018-11-07 12:44:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 12:44:42,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:44:42,583 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:44:42,583 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:44:42,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:44:42,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1782950444, now seen corresponding path program 1 times [2018-11-07 12:44:42,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:44:42,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:44:42,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:44:42,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:44:42,586 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:44:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:44:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:44:42,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:44:42,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 12:44:42,911 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:44:42,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 12:44:42,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 12:44:42,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 12:44:42,913 INFO L87 Difference]: Start difference. First operand 61699 states and 86749 transitions. Second operand 5 states. [2018-11-07 12:45:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:45:00,615 INFO L93 Difference]: Finished difference Result 186997 states and 273132 transitions. [2018-11-07 12:45:00,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 12:45:00,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-11-07 12:45:00,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:45:01,009 INFO L225 Difference]: With dead ends: 186997 [2018-11-07 12:45:01,009 INFO L226 Difference]: Without dead ends: 125304 [2018-11-07 12:45:01,181 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 12:45:01,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125304 states. [2018-11-07 12:45:03,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125304 to 124045. [2018-11-07 12:45:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124045 states. [2018-11-07 12:45:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124045 states to 124045 states and 162732 transitions. [2018-11-07 12:45:03,976 INFO L78 Accepts]: Start accepts. Automaton has 124045 states and 162732 transitions. Word has length 129 [2018-11-07 12:45:03,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:45:03,977 INFO L480 AbstractCegarLoop]: Abstraction has 124045 states and 162732 transitions. [2018-11-07 12:45:03,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 12:45:03,977 INFO L276 IsEmpty]: Start isEmpty. Operand 124045 states and 162732 transitions. [2018-11-07 12:45:03,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-07 12:45:03,982 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:45:03,982 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:45:03,985 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:45:03,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:45:03,986 INFO L82 PathProgramCache]: Analyzing trace with hash 6483041, now seen corresponding path program 1 times [2018-11-07 12:45:03,986 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:45:03,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:45:03,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:45:03,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:45:03,988 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:45:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:45:04,279 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:45:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:45:04,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:45:04,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:45:04,473 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:45:04,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:45:04,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:45:04,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:45:04,474 INFO L87 Difference]: Start difference. First operand 124045 states and 162732 transitions. Second operand 6 states. [2018-11-07 12:45:19,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:45:19,349 INFO L93 Difference]: Finished difference Result 280259 states and 386910 transitions. [2018-11-07 12:45:19,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:45:19,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2018-11-07 12:45:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:45:19,886 INFO L225 Difference]: With dead ends: 280259 [2018-11-07 12:45:19,886 INFO L226 Difference]: Without dead ends: 156220 [2018-11-07 12:45:20,126 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:45:20,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156220 states. [2018-11-07 12:45:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156220 to 155288. [2018-11-07 12:45:23,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155288 states. [2018-11-07 12:45:23,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155288 states to 155288 states and 204725 transitions. [2018-11-07 12:45:23,846 INFO L78 Accepts]: Start accepts. Automaton has 155288 states and 204725 transitions. Word has length 192 [2018-11-07 12:45:23,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:45:23,847 INFO L480 AbstractCegarLoop]: Abstraction has 155288 states and 204725 transitions. [2018-11-07 12:45:23,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:45:23,847 INFO L276 IsEmpty]: Start isEmpty. Operand 155288 states and 204725 transitions. [2018-11-07 12:45:23,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2018-11-07 12:45:23,881 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:45:23,882 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:45:23,883 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:45:23,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:45:23,883 INFO L82 PathProgramCache]: Analyzing trace with hash -641973700, now seen corresponding path program 1 times [2018-11-07 12:45:23,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:45:23,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:45:23,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:45:23,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:45:23,885 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:45:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:45:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:45:24,825 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:45:24,825 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:45:24,826 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 835 with the following transitions: [2018-11-07 12:45:24,830 INFO L202 CegarAbsIntRunner]: [0], [1], [3088], [3092], [3096], [3100], [3104], [3108], [3112], [3116], [3127], [3131], [3135], [3146], [3150], [3154], [3158], [3169], [3173], [3184], [3188], [3192], [3196], [3200], [3204], [3208], [3212], [3216], [3220], [3224], [3228], [3232], [3236], [3240], [3251], [3255], [3259], [3263], [3267], [3271], [3275], [3279], [3283], [3287], [3291], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3361], [3365], [3376], [3380], [3384], [3395], [3399], [3403], [3407], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3449], [3454], [3456], [4195], [4196], [4200], [4204], [4208], [4212], [4216], [4220], [4224], [4228], [4232], [4236], [4240], [4244], [4248], [4252], [4256], [4260], [4264], [4268], [4279], [4290], [4294], [4298], [4309], [4313], [4317], [4321], [4325], [4329], [4333], [4337], [4341], [4345], [4349], [4353], [4357], [4361], [4365], [4369], [4373], [4377], [4381], [4385], [4396], [4400], [4404], [4408], [4412], [4416], [4420], [4431], [4435], [4439], [4443], [4454], [4458], [4462], [4466], [4470], [4474], [4478], [4482], [4486], [4490], [4494], [4498], [4502], [4506], [4510], [4514], [4518], [4522], [4526], [4530], [4534], [4538], [4542], [4553], [4557], [4561], [4565], [4569], [4573], [4577], [4581], [4585], [4589], [4593], [4597], [4601], [4605], [4609], [4620], [4624], [4628], [4632], [4636], [4647], [4651], [4655], [4659], [4663], [4667], [4671], [4675], [4679], [4690], [4694], [4698], [4709], [4713], [4717], [4721], [4725], [4729], [4733], [4737], [4741], [4745], [4749], [4753], [4764], [4768], [4772], [4776], [4780], [4784], [4788], [4792], [4803], [4807], [4811], [4815], [4819], [4823], [4827], [4831], [4835], [4839], [4843], [4847], [4858], [4862], [4873], [4877], [4881], [4885], [4896], [4900], [4904], [4908], [4912], [4916], [4920], [4924], [4935], [4939], [4943], [4954], [4958], [4962], [4966], [4970], [4974], [4978], [4982], [4986], [4990], [4994], [4998], [5002], [5006], [5010], [5014], [5018], [5022], [5026], [5030], [5034], [5038], [5042], [5046], [5050], [5054], [5058], [5062], [5066], [5070], [5074], [5078], [5082], [5086], [5090], [5094], [5105], [5109], [5120], [5124], [5128], [5132], [5136], [5140], [5144], [5148], [5152], [5156], [5167], [5171], [5175], [5179], [5183], [5187], [5191], [5195], [5199], [5203], [5207], [5211], [5215], [5219], [5223], [5225], [5226], [5227], [5234], [5242], [5250], [5254], [5256], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5342], [5344], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6561], [6565], [6569], [6573], [6577], [6581], [6585], [6589], [6593], [6604], [6608], [6619], [6623], [6634], [6645], [6649], [6653], [6657], [6661], [6665], [6669], [6673], [6677], [6681], [6685], [6689], [6693], [6697], [6701], [6712], [6716], [6727], [6731], [6735], [6739], [6743], [6747], [6751], [6755], [6759], [6763], [6767], [6771], [6775], [6779], [6783], [6787], [6791], [6795], [6799], [6801], [6802], [6806], [6810], [6816], [6820], [6822], [6833], [6834], [6835], [6836], [6837], [6838], [6839], [6841], [6842] [2018-11-07 12:45:24,909 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:45:24,909 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:45:25,754 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 12:45:27,096 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:45:27,098 INFO L272 AbstractInterpreter]: Visited 592 different actions 592 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 12:45:27,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:45:27,151 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:45:30,327 INFO L227 lantSequenceWeakener]: Weakened 816 states. On average, predicates are now at 75.02% of their original sizes. [2018-11-07 12:45:30,327 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:45:31,279 INFO L415 sIntCurrentIteration]: We unified 833 AI predicates to 833 [2018-11-07 12:45:31,280 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:45:31,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:45:31,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2018-11-07 12:45:31,281 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:45:31,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 12:45:31,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 12:45:31,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-07 12:45:31,283 INFO L87 Difference]: Start difference. First operand 155288 states and 204725 transitions. Second operand 13 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown