java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label04_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:42:55,177 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:42:55,179 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:42:55,192 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:42:55,193 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:42:55,194 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:42:55,195 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:42:55,197 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:42:55,198 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:42:55,199 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:42:55,200 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:42:55,201 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:42:55,202 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:42:55,203 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:42:55,204 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:42:55,205 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:42:55,206 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:42:55,208 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:42:55,210 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:42:55,212 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:42:55,213 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:42:55,214 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:42:55,217 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:42:55,217 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:42:55,217 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:42:55,218 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:42:55,219 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:42:55,220 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:42:55,221 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:42:55,222 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:42:55,222 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:42:55,225 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:42:55,225 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:42:55,226 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:42:55,227 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:42:55,227 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:42:55,228 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:42:55,251 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:42:55,252 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:42:55,253 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:42:55,254 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:42:55,256 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:42:55,256 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:42:55,256 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:42:55,257 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:42:55,257 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:42:55,257 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:42:55,257 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:42:55,257 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:42:55,258 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:42:55,258 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:42:55,259 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:42:55,260 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:42:55,260 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:42:55,260 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:42:55,260 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:42:55,260 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:42:55,261 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:42:55,261 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:42:55,261 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:42:55,261 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:42:55,261 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:42:55,263 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:42:55,263 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:42:55,263 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:42:55,263 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:42:55,264 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:42:55,264 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:42:55,264 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:42:55,264 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:42:55,265 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:42:55,322 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:42:55,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:42:55,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:42:55,349 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:42:55,349 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:42:55,350 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label04_false-unreach-call.c [2018-10-24 18:42:55,419 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d25d8222/b5963d72a6d44ddfab33919e1e5cd4df/FLAGd4f7dd32a [2018-10-24 18:42:56,127 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:42:56,128 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label04_false-unreach-call.c [2018-10-24 18:42:56,145 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d25d8222/b5963d72a6d44ddfab33919e1e5cd4df/FLAGd4f7dd32a [2018-10-24 18:42:56,161 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d25d8222/b5963d72a6d44ddfab33919e1e5cd4df [2018-10-24 18:42:56,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:42:56,174 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:42:56,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:42:56,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:42:56,179 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:42:56,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:42:56" (1/1) ... [2018-10-24 18:42:56,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b792d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:56, skipping insertion in model container [2018-10-24 18:42:56,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:42:56" (1/1) ... [2018-10-24 18:42:56,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:42:56,282 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:42:57,079 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:42:57,085 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:42:57,371 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:42:57,391 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:42:57,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:57 WrapperNode [2018-10-24 18:42:57,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:42:57,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:42:57,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:42:57,394 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:42:57,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:57" (1/1) ... [2018-10-24 18:42:57,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:57" (1/1) ... [2018-10-24 18:42:57,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:42:57,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:42:57,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:42:57,709 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:42:57,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:57" (1/1) ... [2018-10-24 18:42:57,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:57" (1/1) ... [2018-10-24 18:42:57,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:57" (1/1) ... [2018-10-24 18:42:57,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:57" (1/1) ... [2018-10-24 18:42:57,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:57" (1/1) ... [2018-10-24 18:42:57,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:57" (1/1) ... [2018-10-24 18:42:57,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:57" (1/1) ... [2018-10-24 18:42:57,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:42:57,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:42:57,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:42:57,887 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:42:57,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 18:42:57,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:42:57,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:42:57,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:42:57,960 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:42:57,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:42:57,960 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:42:57,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:42:57,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:42:57,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:42:57,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:43:04,403 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:43:04,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:43:04 BoogieIcfgContainer [2018-10-24 18:43:04,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:43:04,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:43:04,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:43:04,411 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:43:04,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:42:56" (1/3) ... [2018-10-24 18:43:04,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f9bd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:43:04, skipping insertion in model container [2018-10-24 18:43:04,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:42:57" (2/3) ... [2018-10-24 18:43:04,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f9bd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:43:04, skipping insertion in model container [2018-10-24 18:43:04,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:43:04" (3/3) ... [2018-10-24 18:43:04,415 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label04_false-unreach-call.c [2018-10-24 18:43:04,425 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:43:04,440 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:43:04,458 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:43:04,512 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:43:04,512 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:43:04,512 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:43:04,512 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:43:04,513 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:43:04,513 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:43:04,513 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:43:04,513 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:43:04,546 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 18:43:04,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-24 18:43:04,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:43:04,555 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] [2018-10-24 18:43:04,558 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:43:04,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:04,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1727147373, now seen corresponding path program 1 times [2018-10-24 18:43:04,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:43:04,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:04,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:04,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:04,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:43:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:05,066 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:43:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:43:05,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:43:05,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:43:05,204 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:43:05,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:43:05,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:43:05,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:43:05,227 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 18:43:09,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:43:09,927 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 18:43:09,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:43:09,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-10-24 18:43:09,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:43:09,957 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 18:43:09,957 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 18:43:09,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:43:09,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 18:43:10,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 18:43:10,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 18:43:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-10-24 18:43:10,088 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 35 [2018-10-24 18:43:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:43:10,089 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-10-24 18:43:10,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:43:10,090 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-10-24 18:43:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 18:43:10,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:43:10,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:43:10,097 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:43:10,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:10,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1128673264, now seen corresponding path program 1 times [2018-10-24 18:43:10,098 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:43:10,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:10,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:10,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:10,100 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:43:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:43:10,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:43:10,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:43:10,530 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:43:10,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:43:10,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:43:10,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:43:10,534 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-10-24 18:43:23,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:43:23,355 INFO L93 Difference]: Finished difference Result 2960 states and 5492 transitions. [2018-10-24 18:43:23,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 18:43:23,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-24 18:43:23,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:43:23,384 INFO L225 Difference]: With dead ends: 2960 [2018-10-24 18:43:23,384 INFO L226 Difference]: Without dead ends: 2222 [2018-10-24 18:43:23,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:43:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2018-10-24 18:43:23,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2169. [2018-10-24 18:43:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2169 states. [2018-10-24 18:43:23,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3669 transitions. [2018-10-24 18:43:23,529 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3669 transitions. Word has length 111 [2018-10-24 18:43:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:43:23,530 INFO L481 AbstractCegarLoop]: Abstraction has 2169 states and 3669 transitions. [2018-10-24 18:43:23,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:43:23,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3669 transitions. [2018-10-24 18:43:23,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-24 18:43:23,543 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:43:23,544 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:43:23,544 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:43:23,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:23,545 INFO L82 PathProgramCache]: Analyzing trace with hash -950142376, now seen corresponding path program 1 times [2018-10-24 18:43:23,545 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:43:23,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:23,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:23,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:23,548 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:43:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:23,879 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:43:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:43:24,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:43:24,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:43:24,297 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:43:24,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:43:24,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:43:24,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:43:24,301 INFO L87 Difference]: Start difference. First operand 2169 states and 3669 transitions. Second operand 6 states. [2018-10-24 18:43:31,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:43:31,908 INFO L93 Difference]: Finished difference Result 8029 states and 14212 transitions. [2018-10-24 18:43:31,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:43:31,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-10-24 18:43:31,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:43:31,957 INFO L225 Difference]: With dead ends: 8029 [2018-10-24 18:43:31,957 INFO L226 Difference]: Without dead ends: 5866 [2018-10-24 18:43:31,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:43:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5866 states. [2018-10-24 18:43:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5866 to 5815. [2018-10-24 18:43:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5815 states. [2018-10-24 18:43:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5815 states to 5815 states and 8929 transitions. [2018-10-24 18:43:32,181 INFO L78 Accepts]: Start accepts. Automaton has 5815 states and 8929 transitions. Word has length 115 [2018-10-24 18:43:32,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:43:32,181 INFO L481 AbstractCegarLoop]: Abstraction has 5815 states and 8929 transitions. [2018-10-24 18:43:32,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:43:32,182 INFO L276 IsEmpty]: Start isEmpty. Operand 5815 states and 8929 transitions. [2018-10-24 18:43:32,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 18:43:32,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:43:32,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:43:32,193 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:43:32,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:32,193 INFO L82 PathProgramCache]: Analyzing trace with hash -905675908, now seen corresponding path program 1 times [2018-10-24 18:43:32,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:43:32,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:32,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:32,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:32,195 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:43:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:32,484 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:43:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:43:32,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:43:32,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:43:32,547 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:43:32,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:43:32,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:43:32,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:43:32,548 INFO L87 Difference]: Start difference. First operand 5815 states and 8929 transitions. Second operand 6 states. [2018-10-24 18:43:37,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:43:37,129 INFO L93 Difference]: Finished difference Result 13785 states and 22281 transitions. [2018-10-24 18:43:37,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:43:37,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-24 18:43:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:43:37,178 INFO L225 Difference]: With dead ends: 13785 [2018-10-24 18:43:37,178 INFO L226 Difference]: Without dead ends: 7976 [2018-10-24 18:43:37,223 INFO L605 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 [2018-10-24 18:43:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7976 states. [2018-10-24 18:43:37,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7976 to 7901. [2018-10-24 18:43:37,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7901 states. [2018-10-24 18:43:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7901 states to 7901 states and 11540 transitions. [2018-10-24 18:43:37,446 INFO L78 Accepts]: Start accepts. Automaton has 7901 states and 11540 transitions. Word has length 117 [2018-10-24 18:43:37,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:43:37,447 INFO L481 AbstractCegarLoop]: Abstraction has 7901 states and 11540 transitions. [2018-10-24 18:43:37,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:43:37,447 INFO L276 IsEmpty]: Start isEmpty. Operand 7901 states and 11540 transitions. [2018-10-24 18:43:37,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-24 18:43:37,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:43:37,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:43:37,451 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:43:37,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:37,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1836053929, now seen corresponding path program 1 times [2018-10-24 18:43:37,451 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:43:37,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:37,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:37,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:37,453 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:43:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:37,738 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:43:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:43:38,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:43:38,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:43:38,084 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:43:38,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:43:38,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:43:38,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:43:38,088 INFO L87 Difference]: Start difference. First operand 7901 states and 11540 transitions. Second operand 6 states. [2018-10-24 18:43:41,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:43:41,634 INFO L93 Difference]: Finished difference Result 19229 states and 30071 transitions. [2018-10-24 18:43:41,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:43:41,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-10-24 18:43:41,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:43:41,721 INFO L225 Difference]: With dead ends: 19229 [2018-10-24 18:43:41,721 INFO L226 Difference]: Without dead ends: 11334 [2018-10-24 18:43:41,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:43:41,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11334 states. [2018-10-24 18:43:42,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11334 to 11298. [2018-10-24 18:43:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11298 states. [2018-10-24 18:43:42,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11298 states to 11298 states and 16070 transitions. [2018-10-24 18:43:42,063 INFO L78 Accepts]: Start accepts. Automaton has 11298 states and 16070 transitions. Word has length 120 [2018-10-24 18:43:42,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:43:42,063 INFO L481 AbstractCegarLoop]: Abstraction has 11298 states and 16070 transitions. [2018-10-24 18:43:42,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:43:42,064 INFO L276 IsEmpty]: Start isEmpty. Operand 11298 states and 16070 transitions. [2018-10-24 18:43:42,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 18:43:42,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:43:42,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:43:42,069 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:43:42,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:42,070 INFO L82 PathProgramCache]: Analyzing trace with hash 116215820, now seen corresponding path program 1 times [2018-10-24 18:43:42,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:43:42,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:42,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:42,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:42,072 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:43:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:42,338 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:43:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:43:42,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:43:42,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:43:42,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:43:42,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:43:42,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:43:42,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:43:42,550 INFO L87 Difference]: Start difference. First operand 11298 states and 16070 transitions. Second operand 6 states. [2018-10-24 18:43:46,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:43:46,165 INFO L93 Difference]: Finished difference Result 24375 states and 35427 transitions. [2018-10-24 18:43:46,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:43:46,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 18:43:46,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:43:46,225 INFO L225 Difference]: With dead ends: 24375 [2018-10-24 18:43:46,225 INFO L226 Difference]: Without dead ends: 13083 [2018-10-24 18:43:46,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:43:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13083 states. [2018-10-24 18:43:46,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13083 to 13057. [2018-10-24 18:43:46,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13057 states. [2018-10-24 18:43:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13057 states to 13057 states and 17285 transitions. [2018-10-24 18:43:46,566 INFO L78 Accepts]: Start accepts. Automaton has 13057 states and 17285 transitions. Word has length 125 [2018-10-24 18:43:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:43:46,566 INFO L481 AbstractCegarLoop]: Abstraction has 13057 states and 17285 transitions. [2018-10-24 18:43:46,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:43:46,567 INFO L276 IsEmpty]: Start isEmpty. Operand 13057 states and 17285 transitions. [2018-10-24 18:43:46,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 18:43:46,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:43:46,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:43:46,569 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:43:46,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:46,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1715390160, now seen corresponding path program 1 times [2018-10-24 18:43:46,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:43:46,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:46,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:43:46,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:43:46,571 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:43:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:43:46,820 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:43:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 18:43:46,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:43:46,971 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:43:46,972 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 128 with the following transitions: [2018-10-24 18:43:46,974 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [359], [361], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 18:43:47,042 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:43:47,043 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:43:49,298 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:43:55,301 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:43:55,302 INFO L272 AbstractInterpreter]: Visited 99 different actions 288 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:43:55,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:43:55,317 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:43:57,686 INFO L232 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 84.09% of their original sizes. [2018-10-24 18:43:57,687 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:44:24,162 INFO L413 sIntCurrentIteration]: We have 126 unified AI predicates [2018-10-24 18:44:24,163 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:44:24,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:44:24,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-10-24 18:44:24,164 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:44:24,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 18:44:24,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 18:44:24,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-10-24 18:44:24,166 INFO L87 Difference]: Start difference. First operand 13057 states and 17285 transitions. Second operand 14 states. Received shutdown request... [2018-10-24 18:46:57,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 18:46:57,547 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:46:57,553 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:46:57,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:46:57 BoogieIcfgContainer [2018-10-24 18:46:57,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:46:57,555 INFO L168 Benchmark]: Toolchain (without parser) took 241381.87 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -1.9 GB). Peak memory consumption was 783.9 MB. Max. memory is 7.1 GB. [2018-10-24 18:46:57,556 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-24 18:46:57,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1217.99 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:46:57,561 INFO L168 Benchmark]: Boogie Procedure Inliner took 315.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:46:57,562 INFO L168 Benchmark]: Boogie Preprocessor took 177.54 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:46:57,564 INFO L168 Benchmark]: RCFGBuilder took 6518.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 284.0 MB). Peak memory consumption was 284.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:46:57,564 INFO L168 Benchmark]: TraceAbstraction took 233147.03 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 1.9 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 511.9 MB. Max. memory is 7.1 GB. [2018-10-24 18:46:57,571 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1217.99 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 315.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 177.54 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6518.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 284.0 MB). Peak memory consumption was 284.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233147.03 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 1.9 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 511.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 91). Cancelled while BasicCegarLoop was constructing difference of abstraction (13057states) and FLOYD_HOARE automaton (currently 18 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (1432 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 233.0s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 190.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 677 SDtfs, 10337 SDslu, 687 SDs, 0 SdLazy, 14690 SolverSat, 3993 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 90.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 189 GetRequests, 98 SyntacticMatches, 35 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 30.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13057occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9926673567977914 AbsIntWeakeningRatio, 0.15873015873015872 AbsIntAvgWeakeningVarsNumRemoved, 376.96031746031747 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 241 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 750 NumberOfCodeBlocks, 750 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 743 ConstructedInterpolants, 0 QuantifiedInterpolants, 365056 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 144/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown