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/Problem10_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 00:58:57,333 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 00:58:57,335 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 00:58:57,353 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 00:58:57,353 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 00:58:57,354 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 00:58:57,358 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 00:58:57,361 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 00:58:57,363 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 00:58:57,364 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 00:58:57,365 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 00:58:57,365 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 00:58:57,368 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 00:58:57,369 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 00:58:57,370 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 00:58:57,371 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 00:58:57,372 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 00:58:57,374 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 00:58:57,376 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 00:58:57,378 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 00:58:57,379 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 00:58:57,380 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 00:58:57,383 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 00:58:57,383 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 00:58:57,383 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 00:58:57,384 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 00:58:57,385 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 00:58:57,386 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 00:58:57,387 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 00:58:57,388 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 00:58:57,388 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 00:58:57,389 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 00:58:57,389 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 00:58:57,389 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 00:58:57,390 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 00:58:57,391 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 00:58:57,391 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 00:58:57,407 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 00:58:57,408 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 00:58:57,409 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 00:58:57,409 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 00:58:57,409 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 00:58:57,409 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 00:58:57,410 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 00:58:57,410 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 00:58:57,410 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 00:58:57,410 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 00:58:57,410 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 00:58:57,410 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 00:58:57,411 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 00:58:57,411 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 00:58:57,412 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 00:58:57,412 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 00:58:57,412 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 00:58:57,412 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 00:58:57,412 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 00:58:57,413 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 00:58:57,413 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 00:58:57,413 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 00:58:57,413 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 00:58:57,413 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 00:58:57,414 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:58:57,414 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 00:58:57,414 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 00:58:57,414 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 00:58:57,415 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 00:58:57,415 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 00:58:57,415 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 00:58:57,415 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 00:58:57,415 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 00:58:57,415 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 00:58:57,477 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 00:58:57,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 00:58:57,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 00:58:57,503 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 00:58:57,503 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 00:58:57,504 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53_true-unreach-call.c [2018-10-24 00:58:57,579 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2513a5116/0946e7d92a22417fae235747648668f2/FLAGcc2b60d37 [2018-10-24 00:58:58,131 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 00:58:58,135 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label53_true-unreach-call.c [2018-10-24 00:58:58,154 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2513a5116/0946e7d92a22417fae235747648668f2/FLAGcc2b60d37 [2018-10-24 00:58:58,175 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2513a5116/0946e7d92a22417fae235747648668f2 [2018-10-24 00:58:58,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 00:58:58,188 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 00:58:58,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 00:58:58,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 00:58:58,198 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 00:58:58,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:58:58" (1/1) ... [2018-10-24 00:58:58,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748c7e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:58, skipping insertion in model container [2018-10-24 00:58:58,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:58:58" (1/1) ... [2018-10-24 00:58:58,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 00:58:58,268 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 00:58:58,776 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:58:58,781 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 00:58:58,897 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:58:58,925 INFO L193 MainTranslator]: Completed translation [2018-10-24 00:58:58,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:58 WrapperNode [2018-10-24 00:58:58,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 00:58:58,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 00:58:58,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 00:58:58,928 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 00:58:58,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:58" (1/1) ... [2018-10-24 00:58:58,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:58" (1/1) ... [2018-10-24 00:58:59,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 00:58:59,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 00:58:59,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 00:58:59,179 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 00:58:59,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:58" (1/1) ... [2018-10-24 00:58:59,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:58" (1/1) ... [2018-10-24 00:58:59,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:58" (1/1) ... [2018-10-24 00:58:59,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:58" (1/1) ... [2018-10-24 00:58:59,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:58" (1/1) ... [2018-10-24 00:58:59,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:58" (1/1) ... [2018-10-24 00:58:59,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:58" (1/1) ... [2018-10-24 00:58:59,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 00:58:59,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 00:58:59,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 00:58:59,311 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 00:58:59,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:58" (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 00:58:59,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 00:58:59,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 00:58:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 00:58:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 00:58:59,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 00:58:59,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 00:58:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 00:58:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 00:59:02,760 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 00:59:02,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:59:02 BoogieIcfgContainer [2018-10-24 00:59:02,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 00:59:02,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 00:59:02,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 00:59:02,766 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 00:59:02,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:58:58" (1/3) ... [2018-10-24 00:59:02,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bf6a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:59:02, skipping insertion in model container [2018-10-24 00:59:02,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:58:58" (2/3) ... [2018-10-24 00:59:02,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bf6a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:59:02, skipping insertion in model container [2018-10-24 00:59:02,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:59:02" (3/3) ... [2018-10-24 00:59:02,772 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label53_true-unreach-call.c [2018-10-24 00:59:02,781 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 00:59:02,789 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 00:59:02,804 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 00:59:02,842 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 00:59:02,843 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 00:59:02,843 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 00:59:02,843 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 00:59:02,843 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 00:59:02,843 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 00:59:02,844 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 00:59:02,844 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 00:59:02,871 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 00:59:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-24 00:59:02,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:59:02,883 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] [2018-10-24 00:59:02,885 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:59:02,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:59:02,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1566545735, now seen corresponding path program 1 times [2018-10-24 00:59:02,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:59:02,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:59:02,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:59:02,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:59:02,947 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:59:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:59:03,428 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 00:59:03,447 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 00:59:03,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:59:03,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 00:59:03,450 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:59:03,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 00:59:03,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 00:59:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:59:03,479 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-24 00:59:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:59:06,390 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-24 00:59:06,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 00:59:06,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-24 00:59:06,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:59:06,416 INFO L225 Difference]: With dead ends: 737 [2018-10-24 00:59:06,416 INFO L226 Difference]: Without dead ends: 515 [2018-10-24 00:59:06,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:59:06,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-24 00:59:06,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2018-10-24 00:59:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 00:59:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 579 transitions. [2018-10-24 00:59:06,544 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 579 transitions. Word has length 49 [2018-10-24 00:59:06,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:59:06,545 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 579 transitions. [2018-10-24 00:59:06,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 00:59:06,546 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 579 transitions. [2018-10-24 00:59:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 00:59:06,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:59:06,560 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:06,560 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:59:06,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:59:06,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1784083955, now seen corresponding path program 1 times [2018-10-24 00:59:06,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:59:06,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:59:06,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:59:06,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:59:06,566 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:59:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:59:07,028 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:59:07,460 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:59:07,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:59:07,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 00:59:07,461 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:59:07,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 00:59:07,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 00:59:07,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 00:59:07,466 INFO L87 Difference]: Start difference. First operand 356 states and 579 transitions. Second operand 6 states. [2018-10-24 00:59:10,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:59:10,266 INFO L93 Difference]: Finished difference Result 1259 states and 2162 transitions. [2018-10-24 00:59:10,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 00:59:10,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-24 00:59:10,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:59:10,282 INFO L225 Difference]: With dead ends: 1259 [2018-10-24 00:59:10,283 INFO L226 Difference]: Without dead ends: 909 [2018-10-24 00:59:10,288 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 00:59:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2018-10-24 00:59:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 895. [2018-10-24 00:59:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2018-10-24 00:59:10,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1370 transitions. [2018-10-24 00:59:10,379 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1370 transitions. Word has length 124 [2018-10-24 00:59:10,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:59:10,380 INFO L481 AbstractCegarLoop]: Abstraction has 895 states and 1370 transitions. [2018-10-24 00:59:10,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 00:59:10,380 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1370 transitions. [2018-10-24 00:59:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-24 00:59:10,394 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:59:10,395 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:10,395 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:59:10,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:59:10,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1601083443, now seen corresponding path program 1 times [2018-10-24 00:59:10,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:59:10,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:59:10,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:59:10,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:59:10,399 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:59:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:59:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 00:59:10,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:59:10,765 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:59:10,767 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 157 with the following transitions: [2018-10-24 00:59:10,769 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [642], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:59:10,845 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:59:10,845 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:59:14,540 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:59:14,542 INFO L272 AbstractInterpreter]: Visited 111 different actions 111 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 00:59:14,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:59:14,576 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:59:17,215 INFO L232 lantSequenceWeakener]: Weakened 141 states. On average, predicates are now at 74.1% of their original sizes. [2018-10-24 00:59:17,216 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:59:22,689 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:59:22,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:59:22,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-10-24 00:59:22,694 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:59:22,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 00:59:22,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 00:59:22,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 00:59:22,696 INFO L87 Difference]: Start difference. First operand 895 states and 1370 transitions. Second operand 10 states. [2018-10-24 00:59:34,429 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:00:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:00:09,569 INFO L93 Difference]: Finished difference Result 1933 states and 2971 transitions. [2018-10-24 01:00:09,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 01:00:09,569 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2018-10-24 01:00:09,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:00:09,581 INFO L225 Difference]: With dead ends: 1933 [2018-10-24 01:00:09,581 INFO L226 Difference]: Without dead ends: 1044 [2018-10-24 01:00:09,585 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 159 GetRequests, 111 SyntacticMatches, 36 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-24 01:00:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2018-10-24 01:00:09,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1039. [2018-10-24 01:00:09,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-10-24 01:00:09,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1521 transitions. [2018-10-24 01:00:09,657 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1521 transitions. Word has length 156 [2018-10-24 01:00:09,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:00:09,658 INFO L481 AbstractCegarLoop]: Abstraction has 1039 states and 1521 transitions. [2018-10-24 01:00:09,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 01:00:09,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1521 transitions. [2018-10-24 01:00:09,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-24 01:00:09,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:00:09,664 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2018-10-24 01:00:09,666 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:00:09,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:00:09,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1457972223, now seen corresponding path program 1 times [2018-10-24 01:00:09,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:00:09,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:00:09,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:00:09,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:00:09,668 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:00:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:00:10,021 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-10-24 01:00:10,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:00:10,022 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:00:10,022 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-10-24 01:00:10,022 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [642], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 01:00:10,029 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:00:10,029 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:00:11,224 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:00:26,476 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:00:26,476 INFO L272 AbstractInterpreter]: Visited 115 different actions 660 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:00:26,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:00:26,487 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:00:28,966 INFO L232 lantSequenceWeakener]: Weakened 54 states. On average, predicates are now at 76.32% of their original sizes. [2018-10-24 01:00:28,967 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:00:44,680 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:00:44,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:00:44,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [4] total 18 [2018-10-24 01:00:44,681 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:00:44,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 01:00:44,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 01:00:44,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-10-24 01:00:44,682 INFO L87 Difference]: Start difference. First operand 1039 states and 1521 transitions. Second operand 16 states. [2018-10-24 01:02:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:02:29,463 INFO L93 Difference]: Finished difference Result 2313 states and 3493 transitions. [2018-10-24 01:02:29,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 01:02:29,463 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 227 [2018-10-24 01:02:29,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:02:29,472 INFO L225 Difference]: With dead ends: 2313 [2018-10-24 01:02:29,473 INFO L226 Difference]: Without dead ends: 1424 [2018-10-24 01:02:29,476 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 234 GetRequests, 190 SyntacticMatches, 22 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2018-10-24 01:02:29,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2018-10-24 01:02:29,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1339. [2018-10-24 01:02:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2018-10-24 01:02:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1854 transitions. [2018-10-24 01:02:29,585 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1854 transitions. Word has length 227 [2018-10-24 01:02:29,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:02:29,586 INFO L481 AbstractCegarLoop]: Abstraction has 1339 states and 1854 transitions. [2018-10-24 01:02:29,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-24 01:02:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1854 transitions. [2018-10-24 01:02:29,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-24 01:02:29,592 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:02:29,592 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:02:29,593 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:02:29,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:02:29,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1927539496, now seen corresponding path program 1 times [2018-10-24 01:02:29,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:02:29,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:02:29,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:02:29,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:02:29,594 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:02:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:02:29,879 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:02:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 85 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 01:02:30,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:02:30,039 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:02:30,039 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-24 01:02:30,040 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [642], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 01:02:30,044 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:02:30,045 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:02:31,458 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 01:02:47,039 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 01:02:47,040 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 01:02:47,041 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 01:02:47,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:02:47,041 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 01:02:47,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:02:47,049 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 01:02:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:02:47,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 01:02:47,188 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 01:02:47,389 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 01:02:47,389 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:02:47,394 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:02:47,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:02:47 BoogieIcfgContainer [2018-10-24 01:02:47,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:02:47,396 INFO L168 Benchmark]: Toolchain (without parser) took 229208.83 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 2.0 GB in the end (delta: -577.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 01:02:47,397 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:02:47,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 735.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:02:47,398 INFO L168 Benchmark]: Boogie Procedure Inliner took 251.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -817.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:02:47,400 INFO L168 Benchmark]: Boogie Preprocessor took 131.52 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. [2018-10-24 01:02:47,400 INFO L168 Benchmark]: RCFGBuilder took 3450.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.4 MB). Peak memory consumption was 118.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:02:47,401 INFO L168 Benchmark]: TraceAbstraction took 224632.77 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 89.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 01:02:47,406 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 735.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 251.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -817.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.52 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 3450.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.4 MB). Peak memory consumption was 118.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224632.77 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 89.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was analyzing trace of length 237 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 224.5s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 157.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 629 SDtfs, 3331 SDslu, 435 SDs, 0 SdLazy, 3452 SolverSat, 812 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 409 GetRequests, 307 SyntacticMatches, 59 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 23.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1339occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 37.2s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9947031077637034 AbsIntWeakeningRatio, 0.12073490813648294 AbsIntAvgWeakeningVarsNumRemoved, 93.11548556430446 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 263 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 556 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 552 ConstructedInterpolants, 0 QuantifiedInterpolants, 323261 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 125/239 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown