java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:15:56,112 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:15:56,114 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:15:56,132 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:15:56,132 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:15:56,134 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:15:56,135 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:15:56,137 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:15:56,140 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:15:56,141 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:15:56,142 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:15:56,143 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:15:56,144 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:15:56,146 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:15:56,155 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:15:56,156 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:15:56,156 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:15:56,158 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:15:56,161 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:15:56,164 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:15:56,165 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:15:56,166 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:15:56,172 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:15:56,172 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:15:56,172 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:15:56,173 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:15:56,174 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:15:56,175 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:15:56,176 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:15:56,177 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:15:56,177 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:15:56,177 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:15:56,178 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:15:56,178 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:15:56,179 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:15:56,179 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:15:56,180 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-LIM.epf [2018-11-07 21:15:56,204 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:15:56,206 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:15:56,206 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:15:56,207 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:15:56,207 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:15:56,207 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:15:56,207 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:15:56,207 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:15:56,210 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:15:56,210 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:15:56,210 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:15:56,210 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:15:56,211 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:15:56,211 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:15:56,213 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:15:56,213 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:15:56,213 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:15:56,213 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:15:56,214 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:15:56,214 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:15:56,214 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:15:56,214 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:15:56,214 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:15:56,215 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:15:56,215 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:15:56,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:15:56,215 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:15:56,215 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:15:56,216 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:15:56,216 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:15:56,216 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:15:56,216 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:15:56,216 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:15:56,216 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:15:56,217 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:15:56,261 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:15:56,277 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:15:56,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:15:56,283 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:15:56,284 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:15:56,285 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label47_true-unreach-call.c [2018-11-07 21:15:56,364 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cce2485a/755fc51fb45e4d879ee2cd83b8778ac3/FLAG7770db08c [2018-11-07 21:15:57,081 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:15:57,082 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label47_true-unreach-call.c [2018-11-07 21:15:57,107 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cce2485a/755fc51fb45e4d879ee2cd83b8778ac3/FLAG7770db08c [2018-11-07 21:15:57,124 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cce2485a/755fc51fb45e4d879ee2cd83b8778ac3 [2018-11-07 21:15:57,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:15:57,138 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:15:57,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:15:57,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:15:57,143 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:15:57,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:15:57" (1/1) ... [2018-11-07 21:15:57,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@208f9eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:15:57, skipping insertion in model container [2018-11-07 21:15:57,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:15:57" (1/1) ... [2018-11-07 21:15:57,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:15:57,281 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:15:58,402 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:15:58,410 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:15:58,836 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:15:58,866 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:15:58,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:15:58 WrapperNode [2018-11-07 21:15:58,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:15:58,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:15:58,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:15:58,868 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:15:58,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:15:58" (1/1) ... [2018-11-07 21:15:59,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:15:58" (1/1) ... [2018-11-07 21:15:59,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:15:59,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:15:59,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:15:59,137 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:15:59,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:15:58" (1/1) ... [2018-11-07 21:15:59,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:15:58" (1/1) ... [2018-11-07 21:15:59,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:15:58" (1/1) ... [2018-11-07 21:15:59,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:15:58" (1/1) ... [2018-11-07 21:15:59,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:15:58" (1/1) ... [2018-11-07 21:15:59,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:15:58" (1/1) ... [2018-11-07 21:15:59,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:15:58" (1/1) ... [2018-11-07 21:15:59,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:15:59,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:15:59,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:15:59,360 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:15:59,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:15:58" (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 21:15:59,432 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:15:59,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:15:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:15:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:15:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:15:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:15:59,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:15:59,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:15:59,435 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:15:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:15:59,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:15:59,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:15:59,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:16:06,968 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:16:06,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:16:06 BoogieIcfgContainer [2018-11-07 21:16:06,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:16:06,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:16:06,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:16:06,973 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:16:06,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:15:57" (1/3) ... [2018-11-07 21:16:06,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1bbd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:16:06, skipping insertion in model container [2018-11-07 21:16:06,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:15:58" (2/3) ... [2018-11-07 21:16:06,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1bbd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:16:06, skipping insertion in model container [2018-11-07 21:16:06,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:16:06" (3/3) ... [2018-11-07 21:16:06,977 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label47_true-unreach-call.c [2018-11-07 21:16:06,987 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:16:06,997 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:16:07,014 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:16:07,059 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:16:07,059 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:16:07,060 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:16:07,060 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:16:07,060 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:16:07,060 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:16:07,060 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:16:07,061 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:16:07,122 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 21:16:07,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-07 21:16:07,134 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:07,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:16:07,137 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:07,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:07,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1668959596, now seen corresponding path program 1 times [2018-11-07 21:16:07,145 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:07,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:07,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:07,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:07,192 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:07,686 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:16:07,876 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 21:16:07,878 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:16:07,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 21:16:07,879 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:07,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:16:07,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:16:07,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:16:07,906 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 21:16:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:16:14,409 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 21:16:14,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:16:14,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-11-07 21:16:14,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:16:14,440 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 21:16:14,441 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 21:16:14,452 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:16:14,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 21:16:14,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 21:16:14,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 21:16:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 21:16:14,603 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 66 [2018-11-07 21:16:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:16:14,604 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 21:16:14,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:16:14,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 21:16:14,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 21:16:14,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:14,613 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, 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] [2018-11-07 21:16:14,614 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:14,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:14,614 INFO L82 PathProgramCache]: Analyzing trace with hash -842536169, now seen corresponding path program 1 times [2018-11-07 21:16:14,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:14,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:14,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:14,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:14,616 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:14,955 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:16:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:16:15,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:16:15,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:16:15,007 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:15,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:16:15,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:16:15,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:16:15,010 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 21:16:23,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:16:23,998 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-11-07 21:16:24,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:16:24,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-11-07 21:16:24,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:16:24,027 INFO L225 Difference]: With dead ends: 4422 [2018-11-07 21:16:24,027 INFO L226 Difference]: Without dead ends: 2954 [2018-11-07 21:16:24,033 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 21:16:24,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-11-07 21:16:24,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-11-07 21:16:24,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 21:16:24,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-11-07 21:16:24,135 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 141 [2018-11-07 21:16:24,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:16:24,136 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-11-07 21:16:24,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:16:24,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-11-07 21:16:24,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 21:16:24,142 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:24,143 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, 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] [2018-11-07 21:16:24,143 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:24,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:24,143 INFO L82 PathProgramCache]: Analyzing trace with hash -2017722561, now seen corresponding path program 1 times [2018-11-07 21:16:24,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:24,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:24,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:24,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:24,145 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:16:24,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:16:24,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:16:24,349 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:24,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:16:24,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:16:24,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:16:24,350 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-11-07 21:16:37,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:16:37,728 INFO L93 Difference]: Finished difference Result 11886 states and 21673 transitions. [2018-11-07 21:16:37,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 21:16:37,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-11-07 21:16:37,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:16:37,814 INFO L225 Difference]: With dead ends: 11886 [2018-11-07 21:16:37,815 INFO L226 Difference]: Without dead ends: 8964 [2018-11-07 21:16:37,849 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 21:16:37,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8964 states. [2018-11-07 21:16:38,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8964 to 8894. [2018-11-07 21:16:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8894 states. [2018-11-07 21:16:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8894 states to 8894 states and 13536 transitions. [2018-11-07 21:16:38,152 INFO L78 Accepts]: Start accepts. Automaton has 8894 states and 13536 transitions. Word has length 153 [2018-11-07 21:16:38,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:16:38,152 INFO L480 AbstractCegarLoop]: Abstraction has 8894 states and 13536 transitions. [2018-11-07 21:16:38,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:16:38,153 INFO L276 IsEmpty]: Start isEmpty. Operand 8894 states and 13536 transitions. [2018-11-07 21:16:38,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-11-07 21:16:38,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:38,163 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 21:16:38,163 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:38,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:38,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1480284689, now seen corresponding path program 1 times [2018-11-07 21:16:38,164 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:38,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:38,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:38,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:38,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:38,471 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:16:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 118 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:16:38,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:16:38,599 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:16:38,601 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-11-07 21:16:38,605 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2051], [2053], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2184], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:16:38,654 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:16:38,655 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:16:39,177 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:16:39,178 INFO L272 AbstractInterpreter]: Visited 92 different actions 92 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 21:16:39,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:39,224 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:16:39,790 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 78.28% of their original sizes. [2018-11-07 21:16:39,791 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:16:40,131 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-11-07 21:16:40,131 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:16:40,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:16:40,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 21:16:40,133 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:40,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:16:40,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:16:40,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:16:40,135 INFO L87 Difference]: Start difference. First operand 8894 states and 13536 transitions. Second operand 7 states. [2018-11-07 21:16:50,046 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:17:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:17:21,494 INFO L93 Difference]: Finished difference Result 18487 states and 27911 transitions. [2018-11-07 21:17:21,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:17:21,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2018-11-07 21:17:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:17:21,544 INFO L225 Difference]: With dead ends: 18487 [2018-11-07 21:17:21,545 INFO L226 Difference]: Without dead ends: 9599 [2018-11-07 21:17:21,575 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 223 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:17:21,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9599 states. [2018-11-07 21:17:21,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9599 to 9597. [2018-11-07 21:17:21,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9597 states. [2018-11-07 21:17:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9597 states to 9597 states and 14251 transitions. [2018-11-07 21:17:21,837 INFO L78 Accepts]: Start accepts. Automaton has 9597 states and 14251 transitions. Word has length 223 [2018-11-07 21:17:21,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:17:21,838 INFO L480 AbstractCegarLoop]: Abstraction has 9597 states and 14251 transitions. [2018-11-07 21:17:21,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:17:21,838 INFO L276 IsEmpty]: Start isEmpty. Operand 9597 states and 14251 transitions. [2018-11-07 21:17:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-11-07 21:17:21,851 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:17:21,852 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 21:17:21,852 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:17:21,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:17:21,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1421009842, now seen corresponding path program 1 times [2018-11-07 21:17:21,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:17:21,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:17:21,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:17:21,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:17:21,856 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:17:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:17:22,381 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:17:22,578 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:17:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 236 proven. 163 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:17:23,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:17:23,354 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:17:23,354 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 411 with the following transitions: [2018-11-07 21:17:23,355 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2051], [2053], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2184], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:17:23,365 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:17:23,366 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:17:24,012 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:17:24,012 INFO L272 AbstractInterpreter]: Visited 196 different actions 388 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:17:24,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:17:24,020 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:17:24,836 INFO L227 lantSequenceWeakener]: Weakened 135 states. On average, predicates are now at 78.62% of their original sizes. [2018-11-07 21:17:24,836 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:17:26,775 INFO L415 sIntCurrentIteration]: We unified 409 AI predicates to 409 [2018-11-07 21:17:26,776 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:17:26,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:17:26,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-11-07 21:17:26,777 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:17:26,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 21:17:26,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 21:17:26,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-07 21:17:26,779 INFO L87 Difference]: Start difference. First operand 9597 states and 14251 transitions. Second operand 17 states. [2018-11-07 21:17:51,703 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:18:12,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:18:12,206 INFO L93 Difference]: Finished difference Result 20736 states and 30433 transitions. [2018-11-07 21:18:12,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 21:18:12,206 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 410 [2018-11-07 21:18:12,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:18:12,246 INFO L225 Difference]: With dead ends: 20736 [2018-11-07 21:18:12,247 INFO L226 Difference]: Without dead ends: 11848 [2018-11-07 21:18:12,275 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 418 GetRequests, 344 SyntacticMatches, 50 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2018-11-07 21:18:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2018-11-07 21:18:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 11843. [2018-11-07 21:18:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11843 states. [2018-11-07 21:18:13,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11843 states to 11843 states and 16539 transitions. [2018-11-07 21:18:13,184 INFO L78 Accepts]: Start accepts. Automaton has 11843 states and 16539 transitions. Word has length 410 [2018-11-07 21:18:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:18:13,185 INFO L480 AbstractCegarLoop]: Abstraction has 11843 states and 16539 transitions. [2018-11-07 21:18:13,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 21:18:13,185 INFO L276 IsEmpty]: Start isEmpty. Operand 11843 states and 16539 transitions. [2018-11-07 21:18:13,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2018-11-07 21:18:13,214 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:18:13,215 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:18:13,215 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:18:13,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:18:13,216 INFO L82 PathProgramCache]: Analyzing trace with hash 434539689, now seen corresponding path program 1 times [2018-11-07 21:18:13,216 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:18:13,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:18:13,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:18:13,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:18:13,217 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:18:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:18:13,805 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:18:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 183 proven. 149 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 21:18:14,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:18:14,583 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:18:14,584 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 752 with the following transitions: [2018-11-07 21:18:14,587 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2051], [2053], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2184], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:18:14,611 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:18:14,611 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:18:15,745 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:18:15,745 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:18:15,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:18:15,755 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:18:17,000 INFO L227 lantSequenceWeakener]: Weakened 442 states. On average, predicates are now at 77.91% of their original sizes. [2018-11-07 21:18:17,001 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:18:17,637 INFO L415 sIntCurrentIteration]: We unified 750 AI predicates to 750 [2018-11-07 21:18:17,637 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:18:17,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:18:17,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [5] total 34 [2018-11-07 21:18:17,637 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:18:17,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-07 21:18:17,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-07 21:18:17,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2018-11-07 21:18:17,640 INFO L87 Difference]: Start difference. First operand 11843 states and 16539 transitions. Second operand 31 states. [2018-11-07 21:19:07,928 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 21:19:33,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-07 21:19:33,174 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:19:33,181 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:19:33,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:19:33 BoogieIcfgContainer [2018-11-07 21:19:33,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:19:33,182 INFO L168 Benchmark]: Toolchain (without parser) took 216045.70 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 21:19:33,183 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:19:33,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1728.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. [2018-11-07 21:19:33,185 INFO L168 Benchmark]: Boogie Procedure Inliner took 269.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -969.2 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:19:33,186 INFO L168 Benchmark]: Boogie Preprocessor took 222.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-07 21:19:33,186 INFO L168 Benchmark]: RCFGBuilder took 7609.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 510.7 MB). Peak memory consumption was 510.7 MB. Max. memory is 7.1 GB. [2018-11-07 21:19:33,187 INFO L168 Benchmark]: TraceAbstraction took 206211.61 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 21:19:33,192 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1728.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 269.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -969.2 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 222.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7609.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 510.7 MB). Peak memory consumption was 510.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206211.61 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 186). Cancelled while BasicCegarLoop was constructing difference of abstraction (11843states) and FLOYD_HOARE automaton (currently 42 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (14909 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 206.1s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 191.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2510 SDtfs, 20639 SDslu, 1238 SDs, 0 SdLazy, 40554 SolverSat, 4737 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 76.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1453 GetRequests, 1289 SyntacticMatches, 53 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11843occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.4s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9978814346459092 AbsIntWeakeningRatio, 0.07096307023895727 AbsIntAvgWeakeningVarsNumRemoved, 16.45981173062998 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 103 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1744 NumberOfCodeBlocks, 1744 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1738 ConstructedInterpolants, 0 QuantifiedInterpolants, 2910055 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 737/1114 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown