java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label19_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:02:31,320 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:02:31,322 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:02:31,334 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:02:31,335 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:02:31,336 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:02:31,337 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:02:31,339 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:02:31,340 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:02:31,342 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:02:31,343 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:02:31,344 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:02:31,345 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:02:31,346 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:02:31,347 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:02:31,348 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:02:31,348 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:02:31,350 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:02:31,352 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:02:31,354 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:02:31,355 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:02:31,356 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:02:31,358 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 20:02:31,359 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 20:02:31,359 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 20:02:31,360 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 20:02:31,361 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 20:02:31,362 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 20:02:31,362 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 20:02:31,364 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 20:02:31,364 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 20:02:31,364 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 20:02:31,365 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 20:02:31,365 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 20:02:31,366 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 20:02:31,367 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 20:02:31,367 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 20:02:31,390 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:02:31,390 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:02:31,391 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:02:31,392 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:02:31,392 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:02:31,392 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:02:31,392 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:02:31,393 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:02:31,393 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:02:31,393 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:02:31,393 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:02:31,394 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:02:31,394 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:02:31,395 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:02:31,395 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:02:31,395 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:02:31,395 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:02:31,396 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:02:31,397 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:02:31,397 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:02:31,397 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:02:31,397 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:02:31,398 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:02:31,398 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:02:31,398 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:02:31,398 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:02:31,398 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:02:31,399 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:02:31,399 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:02:31,399 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:02:31,399 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:02:31,399 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:02:31,400 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:02:31,452 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:02:31,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:02:31,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:02:31,477 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:02:31,477 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:02:31,478 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label19_false-unreach-call.c [2018-07-23 20:02:31,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ed14a0a/f2f855b0292c48b48f241ddc80f40b66/FLAGbea5f18e7 [2018-07-23 20:02:32,350 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:02:32,351 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label19_false-unreach-call.c [2018-07-23 20:02:32,398 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ed14a0a/f2f855b0292c48b48f241ddc80f40b66/FLAGbea5f18e7 [2018-07-23 20:02:32,421 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78ed14a0a/f2f855b0292c48b48f241ddc80f40b66 [2018-07-23 20:02:32,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:02:32,440 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:02:32,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:02:32,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:02:32,454 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:02:32,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:02:32" (1/1) ... [2018-07-23 20:02:32,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1cb37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:02:32, skipping insertion in model container [2018-07-23 20:02:32,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:02:32" (1/1) ... [2018-07-23 20:02:32,773 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:02:33,594 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:02:33,615 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:02:34,311 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:02:34,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:02:34 WrapperNode [2018-07-23 20:02:34,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:02:34,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:02:34,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:02:34,497 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:02:34,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:02:34" (1/1) ... [2018-07-23 20:02:34,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:02:34" (1/1) ... [2018-07-23 20:02:34,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:02:34,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:02:34,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:02:34,716 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:02:35,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:02:34" (1/1) ... [2018-07-23 20:02:35,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:02:34" (1/1) ... [2018-07-23 20:02:35,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:02:34" (1/1) ... [2018-07-23 20:02:35,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:02:34" (1/1) ... [2018-07-23 20:02:35,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:02:34" (1/1) ... [2018-07-23 20:02:35,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:02:34" (1/1) ... [2018-07-23 20:02:35,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:02:34" (1/1) ... [2018-07-23 20:02:35,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:02:35,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:02:35,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:02:35,410 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:02:35,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:02:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:02:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:02:35,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:02:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:02:35,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:02:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:02:35,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:02:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-23 20:02:35,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-23 20:02:35,486 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-23 20:02:35,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-23 20:02:35,486 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 20:02:35,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 20:02:44,309 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:02:44,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:02:44 BoogieIcfgContainer [2018-07-23 20:02:44,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:02:44,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:02:44,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:02:44,315 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:02:44,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:02:32" (1/3) ... [2018-07-23 20:02:44,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc3f0d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:02:44, skipping insertion in model container [2018-07-23 20:02:44,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:02:34" (2/3) ... [2018-07-23 20:02:44,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc3f0d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:02:44, skipping insertion in model container [2018-07-23 20:02:44,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:02:44" (3/3) ... [2018-07-23 20:02:44,319 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label19_false-unreach-call.c [2018-07-23 20:02:44,330 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:02:44,340 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:02:44,408 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:02:44,408 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:02:44,409 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:02:44,409 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:02:44,409 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:02:44,409 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:02:44,409 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:02:44,409 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:02:44,410 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:02:44,446 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-23 20:02:44,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-23 20:02:44,453 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:02:44,454 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:02:44,454 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:02:44,460 INFO L82 PathProgramCache]: Analyzing trace with hash -705253844, now seen corresponding path program 1 times [2018-07-23 20:02:44,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:02:44,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:02:44,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:02:44,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:02:44,511 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:02:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:02:44,851 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:02:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:02:44,956 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:02:44,956 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:02:44,957 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:02:44,967 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:02:44,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:02:44,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:02:44,989 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-23 20:02:52,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:02:52,451 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-23 20:02:52,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:02:52,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-07-23 20:02:52,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:02:52,510 INFO L225 Difference]: With dead ends: 2251 [2018-07-23 20:02:52,510 INFO L226 Difference]: Without dead ends: 1474 [2018-07-23 20:02:52,527 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:02:52,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-23 20:02:52,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-23 20:02:52,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-23 20:02:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-07-23 20:02:52,757 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 16 [2018-07-23 20:02:52,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:02:52,757 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-07-23 20:02:52,757 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:02:52,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-07-23 20:02:52,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-07-23 20:02:52,765 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:02:52,765 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:02:52,766 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:02:52,767 INFO L82 PathProgramCache]: Analyzing trace with hash -301577834, now seen corresponding path program 1 times [2018-07-23 20:02:52,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:02:52,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:02:52,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:02:52,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:02:52,769 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:02:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:02:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:02:53,316 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:02:53,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:02:53,316 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:02:53,318 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:02:53,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:02:53,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:02:53,319 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-07-23 20:03:12,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:03:12,715 INFO L93 Difference]: Finished difference Result 5908 states and 11160 transitions. [2018-07-23 20:03:12,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 20:03:12,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2018-07-23 20:03:12,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:03:12,754 INFO L225 Difference]: With dead ends: 5908 [2018-07-23 20:03:12,754 INFO L226 Difference]: Without dead ends: 4440 [2018-07-23 20:03:12,769 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-23 20:03:12,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2018-07-23 20:03:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 4388. [2018-07-23 20:03:12,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4388 states. [2018-07-23 20:03:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 7148 transitions. [2018-07-23 20:03:12,923 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 7148 transitions. Word has length 88 [2018-07-23 20:03:12,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:03:12,924 INFO L471 AbstractCegarLoop]: Abstraction has 4388 states and 7148 transitions. [2018-07-23 20:03:12,924 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:03:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 7148 transitions. [2018-07-23 20:03:12,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-23 20:03:12,929 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:03:12,930 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:03:12,930 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:03:12,930 INFO L82 PathProgramCache]: Analyzing trace with hash 403744447, now seen corresponding path program 1 times [2018-07-23 20:03:12,931 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:03:12,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:03:12,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:03:12,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:03:12,932 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:03:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:03:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:03:13,173 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:03:13,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:03:13,173 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:03:13,174 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:03:13,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:03:13,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:03:13,175 INFO L87 Difference]: Start difference. First operand 4388 states and 7148 transitions. Second operand 6 states. [2018-07-23 20:03:23,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:03:23,552 INFO L93 Difference]: Finished difference Result 17447 states and 29630 transitions. [2018-07-23 20:03:23,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:03:23,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-07-23 20:03:23,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:03:23,645 INFO L225 Difference]: With dead ends: 17447 [2018-07-23 20:03:23,646 INFO L226 Difference]: Without dead ends: 13065 [2018-07-23 20:03:23,687 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 20:03:23,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13065 states. [2018-07-23 20:03:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13065 to 12964. [2018-07-23 20:03:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12964 states. [2018-07-23 20:03:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12964 states to 12964 states and 20062 transitions. [2018-07-23 20:03:24,084 INFO L78 Accepts]: Start accepts. Automaton has 12964 states and 20062 transitions. Word has length 111 [2018-07-23 20:03:24,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:03:24,085 INFO L471 AbstractCegarLoop]: Abstraction has 12964 states and 20062 transitions. [2018-07-23 20:03:24,086 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:03:24,086 INFO L276 IsEmpty]: Start isEmpty. Operand 12964 states and 20062 transitions. [2018-07-23 20:03:24,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-23 20:03:24,089 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:03:24,089 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:03:24,090 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:03:24,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2090232382, now seen corresponding path program 1 times [2018-07-23 20:03:24,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:03:24,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:03:24,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:03:24,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:03:24,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:03:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:03:24,422 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:03:24,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:03:24,498 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:03:24,499 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:03:24,499 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:03:24,499 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:03:24,500 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:03:24,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:03:24,500 INFO L87 Difference]: Start difference. First operand 12964 states and 20062 transitions. Second operand 6 states. [2018-07-23 20:03:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:03:34,122 INFO L93 Difference]: Finished difference Result 34984 states and 58787 transitions. [2018-07-23 20:03:34,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:03:34,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-07-23 20:03:34,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:03:34,256 INFO L225 Difference]: With dead ends: 34984 [2018-07-23 20:03:34,256 INFO L226 Difference]: Without dead ends: 22026 [2018-07-23 20:03:34,320 INFO L573 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 [2018-07-23 20:03:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22026 states. [2018-07-23 20:03:34,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22026 to 21857. [2018-07-23 20:03:34,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21857 states. [2018-07-23 20:03:34,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21857 states to 21857 states and 34271 transitions. [2018-07-23 20:03:34,938 INFO L78 Accepts]: Start accepts. Automaton has 21857 states and 34271 transitions. Word has length 146 [2018-07-23 20:03:34,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:03:34,939 INFO L471 AbstractCegarLoop]: Abstraction has 21857 states and 34271 transitions. [2018-07-23 20:03:34,939 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:03:34,939 INFO L276 IsEmpty]: Start isEmpty. Operand 21857 states and 34271 transitions. [2018-07-23 20:03:34,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-23 20:03:34,953 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:03:34,953 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:03:34,953 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:03:34,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1274301265, now seen corresponding path program 1 times [2018-07-23 20:03:34,954 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:03:34,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:03:34,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:03:34,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:03:34,955 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:03:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:03:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:03:35,495 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:03:35,495 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:03:35,496 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-07-23 20:03:35,499 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [1648], [1655], [1663], [1671], [1675], [1677], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2120], [2128], [2136], [2141], [2145], [2148], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2288], [3020], [3021], [3022], [3023], [3025], [3026] [2018-07-23 20:03:35,598 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:03:35,598 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:03:41,010 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:03:41,011 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-23 20:03:41,058 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:03:44,093 INFO L232 lantSequenceWeakener]: Weakened 187 states. On average, predicates are now at 77.33% of their original sizes. [2018-07-23 20:03:44,094 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:03:44,564 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:03:44,565 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:03:44,567 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-23 20:03:44,567 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:03:44,568 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 20:03:44,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 20:03:44,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 20:03:44,569 INFO L87 Difference]: Start difference. First operand 21857 states and 34271 transitions. Second operand 7 states. [2018-07-23 20:04:08,957 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 20:05:42,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:05:42,777 INFO L93 Difference]: Finished difference Result 44413 states and 69400 transitions. [2018-07-23 20:05:42,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:05:42,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2018-07-23 20:05:42,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:05:42,865 INFO L225 Difference]: With dead ends: 44413 [2018-07-23 20:05:42,865 INFO L226 Difference]: Without dead ends: 22562 [2018-07-23 20:05:42,909 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-23 20:05:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22562 states. [2018-07-23 20:05:43,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22562 to 22560. [2018-07-23 20:05:43,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22560 states. [2018-07-23 20:05:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22560 states to 22560 states and 34983 transitions. [2018-07-23 20:05:43,419 INFO L78 Accepts]: Start accepts. Automaton has 22560 states and 34983 transitions. Word has length 195 [2018-07-23 20:05:43,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:05:43,420 INFO L471 AbstractCegarLoop]: Abstraction has 22560 states and 34983 transitions. [2018-07-23 20:05:43,420 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 20:05:43,420 INFO L276 IsEmpty]: Start isEmpty. Operand 22560 states and 34983 transitions. [2018-07-23 20:05:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-07-23 20:05:43,429 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:05:43,429 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:05:43,429 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:05:43,430 INFO L82 PathProgramCache]: Analyzing trace with hash 766982230, now seen corresponding path program 1 times [2018-07-23 20:05:43,430 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:05:43,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:05:43,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:05:43,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:05:43,431 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:05:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:05:43,981 WARN L169 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-23 20:05:44,188 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-23 20:05:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 86 proven. 187 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 20:05:44,841 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:05:44,841 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:05:44,842 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 383 with the following transitions: [2018-07-23 20:05:44,842 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [1648], [1655], [1663], [1671], [1675], [1677], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2120], [2128], [2136], [2141], [2145], [2148], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2288], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2608], [3020], [3021], [3022], [3023], [3025], [3026] [2018-07-23 20:05:44,856 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:05:44,860 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:06:13,985 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:06:13,985 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-23 20:06:13,993 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown