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/Problem03_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:56:05,157 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:56:05,159 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:56:05,176 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:56:05,176 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:56:05,177 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:56:05,179 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:56:05,182 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:56:05,185 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:56:05,186 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:56:05,188 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:56:05,188 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:56:05,190 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:56:05,191 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:56:05,192 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:56:05,193 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:56:05,202 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:56:05,204 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:56:05,209 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:56:05,212 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:56:05,214 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:56:05,215 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:56:05,217 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:56:05,220 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:56:05,220 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:56:05,221 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:56:05,222 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:56:05,223 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:56:05,224 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:56:05,226 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:56:05,226 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:56:05,227 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:56:05,227 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:56:05,227 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:56:05,228 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:56:05,229 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:56:05,229 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:56:05,254 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:56:05,255 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:56:05,256 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:56:05,256 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:56:05,256 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:56:05,256 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:56:05,257 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:56:05,257 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:56:05,257 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:56:05,257 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:56:05,257 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:56:05,257 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:56:05,258 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:56:05,258 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:56:05,259 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:56:05,260 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:56:05,260 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:56:05,260 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:56:05,260 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:56:05,260 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:56:05,261 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:56:05,261 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:56:05,261 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:56:05,261 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:56:05,261 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:56:05,262 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:56:05,262 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:56:05,262 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:56:05,262 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:56:05,262 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:56:05,263 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:56:05,263 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:56:05,263 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:56:05,263 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:56:05,263 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:56:05,314 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:56:05,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:56:05,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:56:05,332 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:56:05,333 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:56:05,334 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label38_true-unreach-call.c [2018-11-07 18:56:05,410 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba8159cd7/36981c4bf13a44aaad2fe6fb76fac29b/FLAG2a35a8694 [2018-11-07 18:56:06,045 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:56:06,046 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label38_true-unreach-call.c [2018-11-07 18:56:06,070 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba8159cd7/36981c4bf13a44aaad2fe6fb76fac29b/FLAG2a35a8694 [2018-11-07 18:56:06,091 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba8159cd7/36981c4bf13a44aaad2fe6fb76fac29b [2018-11-07 18:56:06,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:56:06,107 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:56:06,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:56:06,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:56:06,114 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:56:06,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:56:06" (1/1) ... [2018-11-07 18:56:06,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33cc7e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:06, skipping insertion in model container [2018-11-07 18:56:06,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:56:06" (1/1) ... [2018-11-07 18:56:06,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:56:06,232 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:56:06,971 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:56:06,978 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:56:07,243 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:56:07,265 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:56:07,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:07 WrapperNode [2018-11-07 18:56:07,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:56:07,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:56:07,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:56:07,268 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:56:07,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:07" (1/1) ... [2018-11-07 18:56:07,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:07" (1/1) ... [2018-11-07 18:56:07,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:56:07,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:56:07,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:56:07,471 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:56:07,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:07" (1/1) ... [2018-11-07 18:56:07,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:07" (1/1) ... [2018-11-07 18:56:07,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:07" (1/1) ... [2018-11-07 18:56:07,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:07" (1/1) ... [2018-11-07 18:56:07,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:07" (1/1) ... [2018-11-07 18:56:07,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:07" (1/1) ... [2018-11-07 18:56:07,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:07" (1/1) ... [2018-11-07 18:56:07,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:56:07,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:56:07,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:56:07,618 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:56:07,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:56:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:56:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:56:07,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:56:07,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:56:07,688 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:56:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:56:07,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:56:07,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:56:07,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:56:12,509 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:56:12,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:56:12 BoogieIcfgContainer [2018-11-07 18:56:12,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:56:12,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:56:12,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:56:12,515 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:56:12,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:56:06" (1/3) ... [2018-11-07 18:56:12,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622fb299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:56:12, skipping insertion in model container [2018-11-07 18:56:12,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:07" (2/3) ... [2018-11-07 18:56:12,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622fb299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:56:12, skipping insertion in model container [2018-11-07 18:56:12,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:56:12" (3/3) ... [2018-11-07 18:56:12,519 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label38_true-unreach-call.c [2018-11-07 18:56:12,530 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:56:12,540 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:56:12,559 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:56:12,601 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:56:12,602 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:56:12,602 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:56:12,602 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:56:12,602 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:56:12,602 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:56:12,602 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:56:12,603 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:56:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 18:56:12,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-11-07 18:56:12,657 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:12,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:12,662 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:12,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:12,672 INFO L82 PathProgramCache]: Analyzing trace with hash -274519863, now seen corresponding path program 1 times [2018-11-07 18:56:12,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:12,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:12,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:12,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:12,737 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:13,758 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:56:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:56:13,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:13,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:56:13,975 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:13,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:56:13,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:56:13,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:56:13,997 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 18:56:16,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:16,213 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-11-07 18:56:16,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:56:16,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2018-11-07 18:56:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:16,240 INFO L225 Difference]: With dead ends: 848 [2018-11-07 18:56:16,240 INFO L226 Difference]: Without dead ends: 534 [2018-11-07 18:56:16,248 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:56:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-11-07 18:56:16,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-11-07 18:56:16,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-11-07 18:56:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-11-07 18:56:16,339 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 208 [2018-11-07 18:56:16,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:16,342 INFO L480 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-11-07 18:56:16,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:56:16,342 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-11-07 18:56:16,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-07 18:56:16,352 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:16,352 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:56:16,352 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:16,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:16,353 INFO L82 PathProgramCache]: Analyzing trace with hash 583518797, now seen corresponding path program 1 times [2018-11-07 18:56:16,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:16,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:16,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:16,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:16,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:56:16,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:16,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:56:16,917 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:16,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:56:16,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:56:16,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:56:16,920 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-11-07 18:56:18,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:18,681 INFO L93 Difference]: Finished difference Result 1494 states and 2513 transitions. [2018-11-07 18:56:18,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:56:18,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2018-11-07 18:56:18,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:18,689 INFO L225 Difference]: With dead ends: 1494 [2018-11-07 18:56:18,690 INFO L226 Difference]: Without dead ends: 968 [2018-11-07 18:56:18,693 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:56:18,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-11-07 18:56:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 952. [2018-11-07 18:56:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-11-07 18:56:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1529 transitions. [2018-11-07 18:56:18,733 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1529 transitions. Word has length 221 [2018-11-07 18:56:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:18,734 INFO L480 AbstractCegarLoop]: Abstraction has 952 states and 1529 transitions. [2018-11-07 18:56:18,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:56:18,734 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1529 transitions. [2018-11-07 18:56:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 18:56:18,740 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:18,741 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:56:18,741 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:18,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:18,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1022344301, now seen corresponding path program 1 times [2018-11-07 18:56:18,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:18,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:18,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:18,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:18,743 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:56:19,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:56:19,058 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:56:19,059 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-11-07 18:56:19,062 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:56:19,125 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:56:19,126 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:56:20,769 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:56:20,771 INFO L272 AbstractInterpreter]: Visited 209 different actions 209 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 18:56:20,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:20,816 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:56:22,390 INFO L227 lantSequenceWeakener]: Weakened 223 states. On average, predicates are now at 74.99% of their original sizes. [2018-11-07 18:56:22,391 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:56:24,247 INFO L415 sIntCurrentIteration]: We unified 231 AI predicates to 231 [2018-11-07 18:56:24,247 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:56:24,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:56:24,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 18:56:24,249 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:24,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 18:56:24,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 18:56:24,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-11-07 18:56:24,251 INFO L87 Difference]: Start difference. First operand 952 states and 1529 transitions. Second operand 16 states. [2018-11-07 18:57:04,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:57:04,995 INFO L93 Difference]: Finished difference Result 2108 states and 3387 transitions. [2018-11-07 18:57:04,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 18:57:04,995 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 232 [2018-11-07 18:57:04,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:57:05,001 INFO L225 Difference]: With dead ends: 2108 [2018-11-07 18:57:05,002 INFO L226 Difference]: Without dead ends: 1162 [2018-11-07 18:57:05,005 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 234 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-11-07 18:57:05,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2018-11-07 18:57:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1160. [2018-11-07 18:57:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2018-11-07 18:57:05,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1747 transitions. [2018-11-07 18:57:05,047 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1747 transitions. Word has length 232 [2018-11-07 18:57:05,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:57:05,047 INFO L480 AbstractCegarLoop]: Abstraction has 1160 states and 1747 transitions. [2018-11-07 18:57:05,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 18:57:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1747 transitions. [2018-11-07 18:57:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-07 18:57:05,054 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:57:05,054 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:57:05,055 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:57:05,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:57:05,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1482214398, now seen corresponding path program 1 times [2018-11-07 18:57:05,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:57:05,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:57:05,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:57:05,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:57:05,059 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:57:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:57:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:57:05,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:57:05,507 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:57:05,507 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-11-07 18:57:05,508 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:57:05,529 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:57:05,530 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:57:08,197 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:57:08,197 INFO L272 AbstractInterpreter]: Visited 212 different actions 420 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:57:08,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:57:08,206 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:57:09,760 INFO L227 lantSequenceWeakener]: Weakened 238 states. On average, predicates are now at 74.68% of their original sizes. [2018-11-07 18:57:09,761 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:57:10,811 INFO L415 sIntCurrentIteration]: We unified 240 AI predicates to 240 [2018-11-07 18:57:10,812 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:57:10,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:57:10,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 18:57:10,812 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:57:10,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 18:57:10,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 18:57:10,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2018-11-07 18:57:10,814 INFO L87 Difference]: Start difference. First operand 1160 states and 1747 transitions. Second operand 17 states. [2018-11-07 18:58:26,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:58:26,273 INFO L93 Difference]: Finished difference Result 3390 states and 5456 transitions. [2018-11-07 18:58:26,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 18:58:26,273 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 241 [2018-11-07 18:58:26,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:58:26,284 INFO L225 Difference]: With dead ends: 3390 [2018-11-07 18:58:26,284 INFO L226 Difference]: Without dead ends: 2024 [2018-11-07 18:58:26,290 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 249 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2018-11-07 18:58:26,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2018-11-07 18:58:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2021. [2018-11-07 18:58:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2021 states. [2018-11-07 18:58:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 2779 transitions. [2018-11-07 18:58:26,345 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 2779 transitions. Word has length 241 [2018-11-07 18:58:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:58:26,345 INFO L480 AbstractCegarLoop]: Abstraction has 2021 states and 2779 transitions. [2018-11-07 18:58:26,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 18:58:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 2779 transitions. [2018-11-07 18:58:26,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-07 18:58:26,355 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:58:26,355 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-11-07 18:58:26,356 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:58:26,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:26,356 INFO L82 PathProgramCache]: Analyzing trace with hash 867757295, now seen corresponding path program 1 times [2018-11-07 18:58:26,356 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:58:26,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:26,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:58:26,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:26,358 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:58:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:58:26,641 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:58:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 45 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-07 18:58:26,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:58:26,942 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:58:26,942 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-11-07 18:58:26,943 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [83], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:58:26,949 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:58:26,950 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:58:28,144 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:58:28,145 INFO L272 AbstractInterpreter]: Visited 213 different actions 420 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:58:28,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:28,153 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:58:29,521 INFO L227 lantSequenceWeakener]: Weakened 101 states. On average, predicates are now at 82.25% of their original sizes. [2018-11-07 18:58:29,522 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:58:32,896 INFO L415 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-11-07 18:58:32,896 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:58:32,897 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:58:32,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [30] imperfect sequences [6] total 34 [2018-11-07 18:58:32,897 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:58:32,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-07 18:58:32,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-07 18:58:32,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2018-11-07 18:58:32,899 INFO L87 Difference]: Start difference. First operand 2021 states and 2779 transitions. Second operand 30 states. [2018-11-07 18:59:35,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:59:35,357 INFO L93 Difference]: Finished difference Result 4257 states and 6027 transitions. [2018-11-07 18:59:35,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:59:35,357 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 256 [2018-11-07 18:59:35,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:59:35,370 INFO L225 Difference]: With dead ends: 4257 [2018-11-07 18:59:35,371 INFO L226 Difference]: Without dead ends: 2450 [2018-11-07 18:59:35,377 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 270 GetRequests, 213 SyntacticMatches, 14 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=374, Invalid=1606, Unknown=0, NotChecked=0, Total=1980 [2018-11-07 18:59:35,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2018-11-07 18:59:35,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2440. [2018-11-07 18:59:35,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2440 states. [2018-11-07 18:59:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 3230 transitions. [2018-11-07 18:59:35,444 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 3230 transitions. Word has length 256 [2018-11-07 18:59:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:59:35,445 INFO L480 AbstractCegarLoop]: Abstraction has 2440 states and 3230 transitions. [2018-11-07 18:59:35,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-07 18:59:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 3230 transitions. [2018-11-07 18:59:35,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-11-07 18:59:35,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:59:35,456 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:59:35,456 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:59:35,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:35,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1163404027, now seen corresponding path program 1 times [2018-11-07 18:59:35,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:59:35,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:35,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:35,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:35,458 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:59:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 18:59:35,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:35,934 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:59:35,934 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-11-07 18:59:35,935 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:59:35,940 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:59:35,940 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:59:39,160 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:59:39,160 INFO L272 AbstractInterpreter]: Visited 214 different actions 639 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 18:59:39,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:39,170 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:59:39,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:39,171 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:59:39,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:39,180 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:59:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:39,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:59:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 18:59:39,675 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:59:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 18:59:40,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:59:40,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-11-07 18:59:40,231 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:59:40,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 18:59:40,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 18:59:40,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-07 18:59:40,233 INFO L87 Difference]: Start difference. First operand 2440 states and 3230 transitions. Second operand 9 states. [2018-11-07 18:59:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:59:52,314 INFO L93 Difference]: Finished difference Result 14356 states and 24506 transitions. [2018-11-07 18:59:52,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-07 18:59:52,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 267 [2018-11-07 18:59:52,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:59:52,424 INFO L225 Difference]: With dead ends: 14356 [2018-11-07 18:59:52,424 INFO L226 Difference]: Without dead ends: 12549 [2018-11-07 18:59:52,476 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2018-11-07 18:59:52,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12549 states. [2018-11-07 18:59:52,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12549 to 12277. [2018-11-07 18:59:52,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12277 states. [2018-11-07 18:59:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12277 states to 12277 states and 17179 transitions. [2018-11-07 18:59:52,909 INFO L78 Accepts]: Start accepts. Automaton has 12277 states and 17179 transitions. Word has length 267 [2018-11-07 18:59:52,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:59:52,910 INFO L480 AbstractCegarLoop]: Abstraction has 12277 states and 17179 transitions. [2018-11-07 18:59:52,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 18:59:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 12277 states and 17179 transitions. [2018-11-07 18:59:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-11-07 18:59:52,958 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:59:52,959 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:59:52,959 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:59:52,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:52,960 INFO L82 PathProgramCache]: Analyzing trace with hash 464520961, now seen corresponding path program 1 times [2018-11-07 18:59:52,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:59:52,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:52,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:52,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:52,961 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:59:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 18:59:53,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:53,575 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:59:53,575 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-11-07 18:59:53,575 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:59:53,587 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:59:53,587 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:59:57,080 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:59:57,081 INFO L272 AbstractInterpreter]: Visited 214 different actions 639 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 18:59:57,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:57,090 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:59:57,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:57,090 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:59:57,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:57,099 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:59:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:57,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:59:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-07 18:59:57,417 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:59:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-11-07 18:59:57,650 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:59:57,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-11-07 18:59:57,650 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:59:57,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:59:57,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:59:57,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:59:57,652 INFO L87 Difference]: Start difference. First operand 12277 states and 17179 transitions. Second operand 3 states. [2018-11-07 18:59:59,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:59:59,354 INFO L93 Difference]: Finished difference Result 23874 states and 33814 transitions. [2018-11-07 18:59:59,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:59:59,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 281 [2018-11-07 18:59:59,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:59:59,427 INFO L225 Difference]: With dead ends: 23874 [2018-11-07 18:59:59,427 INFO L226 Difference]: Without dead ends: 14812 [2018-11-07 18:59:59,467 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 560 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:59:59,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14812 states. [2018-11-07 18:59:59,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14812 to 14807. [2018-11-07 18:59:59,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14807 states. [2018-11-07 18:59:59,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 21030 transitions. [2018-11-07 18:59:59,864 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 21030 transitions. Word has length 281 [2018-11-07 18:59:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:59:59,864 INFO L480 AbstractCegarLoop]: Abstraction has 14807 states and 21030 transitions. [2018-11-07 18:59:59,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:59:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 21030 transitions. [2018-11-07 18:59:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-11-07 18:59:59,950 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:59:59,950 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:59:59,950 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:59:59,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:59,951 INFO L82 PathProgramCache]: Analyzing trace with hash -221841505, now seen corresponding path program 1 times [2018-11-07 18:59:59,951 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:59:59,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:59,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:59,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:59,952 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 19:00:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 19:00:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 186 proven. 22 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-07 19:00:00,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 19:00:00,563 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 19:00:00,563 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 363 with the following transitions: [2018-11-07 19:00:00,563 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [342], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1125], [1127], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 19:00:00,569 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 19:00:00,569 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 19:00:03,394 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 19:00:03,395 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 19:00:03,395 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 19:00:03,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 19:00:03,396 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 19:00:03,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 19:00:03,405 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 19:00:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 19:00:03,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 19:00:03,688 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 19:00:03,889 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 19:00:03,890 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 19:00:03,895 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 19:00:03,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:00:03 BoogieIcfgContainer [2018-11-07 19:00:03,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 19:00:03,898 INFO L168 Benchmark]: Toolchain (without parser) took 237791.10 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -586.0 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 19:00:03,899 INFO L168 Benchmark]: CDTParser took 0.26 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 19:00:03,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1157.62 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:03,903 INFO L168 Benchmark]: Boogie Procedure Inliner took 202.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -901.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:03,904 INFO L168 Benchmark]: Boogie Preprocessor took 147.20 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 19:00:03,904 INFO L168 Benchmark]: RCFGBuilder took 4892.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 275.2 MB). Peak memory consumption was 275.2 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:03,909 INFO L168 Benchmark]: TraceAbstraction took 231384.44 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: -55.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 19:00:03,924 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1157.62 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 202.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -901.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.20 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4892.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 275.2 MB). Peak memory consumption was 275.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231384.44 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: -55.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1638]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1638). Cancelled while BasicCegarLoop was analyzing trace of length 363 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 231.3s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 196.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2380 SDtfs, 7820 SDslu, 4074 SDs, 0 SdLazy, 21099 SolverSat, 2806 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 124.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1924 GetRequests, 1777 SyntacticMatches, 18 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1189 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14807occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.2s AbstIntTime, 6 AbstIntIterations, 3 AbstIntStrong, 0.9990052305205465 AbsIntWeakeningRatio, 0.2644628099173554 AbsIntAvgWeakeningVarsNumRemoved, 53.44765840220386 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 310 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 2254 NumberOfCodeBlocks, 2254 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2791 ConstructedInterpolants, 0 QuantifiedInterpolants, 1284151 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2481 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 700/729 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown