java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:58:40,266 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:58:40,269 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:58:40,287 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:58:40,287 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:58:40,289 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:58:40,291 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:58:40,293 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:58:40,296 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:58:40,297 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:58:40,298 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:58:40,298 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:58:40,299 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:58:40,300 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:58:40,301 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:58:40,302 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:58:40,303 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:58:40,305 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:58:40,307 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:58:40,308 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:58:40,309 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:58:40,311 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:58:40,313 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:58:40,313 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:58:40,313 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:58:40,314 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:58:40,315 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:58:40,316 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:58:40,317 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:58:40,318 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:58:40,318 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:58:40,319 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:58:40,319 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:58:40,319 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:58:40,320 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:58:40,321 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:58:40,321 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:58:40,342 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:58:40,343 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:58:40,344 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:58:40,345 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:58:40,345 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:58:40,345 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:58:40,345 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:58:40,345 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:58:40,346 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:58:40,346 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:58:40,346 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:58:40,348 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:58:40,348 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:58:40,348 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:58:40,348 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:58:40,350 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:58:40,350 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:58:40,351 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:58:40,351 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:58:40,351 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:58:40,351 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:58:40,351 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:58:40,352 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:58:40,352 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:58:40,352 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:58:40,352 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:58:40,353 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:58:40,353 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:58:40,353 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:58:40,353 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:58:40,353 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:58:40,353 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:58:40,354 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:58:40,412 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:58:40,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:58:40,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:58:40,433 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:58:40,433 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:58:40,434 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c [2018-09-10 11:58:40,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0c109fc/9d61bb6615fd4562a06c33be6ddf9f0b/FLAGafc473c60 [2018-09-10 11:58:41,288 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:58:41,290 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c [2018-09-10 11:58:41,350 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0c109fc/9d61bb6615fd4562a06c33be6ddf9f0b/FLAGafc473c60 [2018-09-10 11:58:41,375 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0c109fc/9d61bb6615fd4562a06c33be6ddf9f0b [2018-09-10 11:58:41,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:58:41,391 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:58:41,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:58:41,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:58:41,400 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:58:41,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:58:41" (1/1) ... [2018-09-10 11:58:41,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3d4853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:41, skipping insertion in model container [2018-09-10 11:58:41,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:58:41" (1/1) ... [2018-09-10 11:58:41,787 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:58:43,041 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:58:43,063 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:58:43,867 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:58:44,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:44 WrapperNode [2018-09-10 11:58:44,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:58:44,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:58:44,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:58:44,338 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:58:44,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:44" (1/1) ... [2018-09-10 11:58:44,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:44" (1/1) ... [2018-09-10 11:58:44,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:58:44,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:58:44,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:58:44,688 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:58:45,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:44" (1/1) ... [2018-09-10 11:58:45,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:44" (1/1) ... [2018-09-10 11:58:45,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:44" (1/1) ... [2018-09-10 11:58:45,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:44" (1/1) ... [2018-09-10 11:58:45,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:44" (1/1) ... [2018-09-10 11:58:45,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:44" (1/1) ... [2018-09-10 11:58:45,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:44" (1/1) ... [2018-09-10 11:58:46,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:58:46,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:58:46,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:58:46,031 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:58:46,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:44" (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 [2018-09-10 11:58:46,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:58:46,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:58:46,106 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:58:46,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:58:46,107 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:58:46,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:58:46,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:58:46,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:58:46,107 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:58:46,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:58:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:58:46,108 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:58:46,108 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:58:46,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:59:01,312 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:59:01,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:59:01 BoogieIcfgContainer [2018-09-10 11:59:01,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:59:01,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:59:01,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:59:01,317 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:59:01,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:58:41" (1/3) ... [2018-09-10 11:59:01,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407c6ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:59:01, skipping insertion in model container [2018-09-10 11:59:01,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:44" (2/3) ... [2018-09-10 11:59:01,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407c6ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:59:01, skipping insertion in model container [2018-09-10 11:59:01,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:59:01" (3/3) ... [2018-09-10 11:59:01,320 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label50_true-unreach-call.c [2018-09-10 11:59:01,331 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:59:01,341 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:59:01,408 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:59:01,409 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:59:01,409 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:59:01,409 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:59:01,410 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:59:01,410 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:59:01,410 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:59:01,410 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:59:01,410 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:59:01,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 11:59:01,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-10 11:59:01,474 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:01,476 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:59:01,477 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:59:01,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1189021641, now seen corresponding path program 1 times [2018-09-10 11:59:01,486 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:01,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:01,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:01,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:01,543 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:02,044 WARN L175 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:59:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:59:02,197 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:59:02,197 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:59:02,198 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:02,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:59:02,220 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:59:02,220 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:59:02,223 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-10 11:59:12,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:12,323 INFO L93 Difference]: Finished difference Result 3104 states and 5729 transitions. [2018-09-10 11:59:12,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:59:12,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-09-10 11:59:12,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:12,361 INFO L225 Difference]: With dead ends: 3104 [2018-09-10 11:59:12,362 INFO L226 Difference]: Without dead ends: 1982 [2018-09-10 11:59:12,374 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:59:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2018-09-10 11:59:12,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1965. [2018-09-10 11:59:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2018-09-10 11:59:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3515 transitions. [2018-09-10 11:59:12,555 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3515 transitions. Word has length 69 [2018-09-10 11:59:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:12,556 INFO L480 AbstractCegarLoop]: Abstraction has 1965 states and 3515 transitions. [2018-09-10 11:59:12,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:59:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3515 transitions. [2018-09-10 11:59:12,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-10 11:59:12,564 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:12,565 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:59:12,565 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:59:12,565 INFO L82 PathProgramCache]: Analyzing trace with hash -133867188, now seen corresponding path program 1 times [2018-09-10 11:59:12,566 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:12,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:12,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:12,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:12,567 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:59:13,051 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:59:13,051 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:59:13,051 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:13,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:59:13,053 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:59:13,054 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:59:13,054 INFO L87 Difference]: Start difference. First operand 1965 states and 3515 transitions. Second operand 6 states. [2018-09-10 11:59:30,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:30,720 INFO L93 Difference]: Finished difference Result 7217 states and 13326 transitions. [2018-09-10 11:59:30,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:59:30,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-09-10 11:59:30,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:30,753 INFO L225 Difference]: With dead ends: 7217 [2018-09-10 11:59:30,753 INFO L226 Difference]: Without dead ends: 5258 [2018-09-10 11:59:30,766 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:59:30,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2018-09-10 11:59:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 5228. [2018-09-10 11:59:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5228 states. [2018-09-10 11:59:30,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 8304 transitions. [2018-09-10 11:59:30,932 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 8304 transitions. Word has length 139 [2018-09-10 11:59:30,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:30,933 INFO L480 AbstractCegarLoop]: Abstraction has 5228 states and 8304 transitions. [2018-09-10 11:59:30,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:59:30,933 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 8304 transitions. [2018-09-10 11:59:30,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-10 11:59:30,946 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:30,947 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:59:30,947 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:59:30,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1174139738, now seen corresponding path program 1 times [2018-09-10 11:59:30,947 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:30,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:30,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:30,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:30,951 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:59:31,665 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:59:31,666 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-10 11:59:31,666 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:31,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 11:59:31,670 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 11:59:31,670 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:59:31,671 INFO L87 Difference]: Start difference. First operand 5228 states and 8304 transitions. Second operand 7 states. [2018-09-10 11:59:55,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:55,248 INFO L93 Difference]: Finished difference Result 18314 states and 31314 transitions. [2018-09-10 11:59:55,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 11:59:55,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2018-09-10 11:59:55,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:55,343 INFO L225 Difference]: With dead ends: 18314 [2018-09-10 11:59:55,343 INFO L226 Difference]: Without dead ends: 13092 [2018-09-10 11:59:55,373 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:59:55,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13092 states. [2018-09-10 11:59:55,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13092 to 12956. [2018-09-10 11:59:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12956 states. [2018-09-10 11:59:55,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12956 states to 12956 states and 19065 transitions. [2018-09-10 11:59:55,802 INFO L78 Accepts]: Start accepts. Automaton has 12956 states and 19065 transitions. Word has length 152 [2018-09-10 11:59:55,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:55,802 INFO L480 AbstractCegarLoop]: Abstraction has 12956 states and 19065 transitions. [2018-09-10 11:59:55,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 11:59:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 12956 states and 19065 transitions. [2018-09-10 11:59:55,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-09-10 11:59:55,816 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:55,817 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:59:55,817 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:59:55,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2132393660, now seen corresponding path program 1 times [2018-09-10 11:59:55,821 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:55,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:55,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:55,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:55,822 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:56,152 WARN L175 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:59:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 124 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:59:56,337 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:59:56,338 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:59:56,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:56,352 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:59:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:56,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:59:56,795 WARN L175 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-09-10 11:59:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 11:59:56,835 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:59:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 11:59:56,977 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:59:56,977 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-10 11:59:56,977 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:56,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:59:56,978 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:59:56,978 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:59:56,979 INFO L87 Difference]: Start difference. First operand 12956 states and 19065 transitions. Second operand 3 states. [2018-09-10 12:00:07,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:07,090 INFO L93 Difference]: Finished difference Result 37441 states and 58377 transitions. [2018-09-10 12:00:07,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:00:07,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2018-09-10 12:00:07,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:07,241 INFO L225 Difference]: With dead ends: 37441 [2018-09-10 12:00:07,242 INFO L226 Difference]: Without dead ends: 24491 [2018-09-10 12:00:07,326 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 457 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:00:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24491 states. [2018-09-10 12:00:07,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24491 to 24440. [2018-09-10 12:00:07,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24440 states. [2018-09-10 12:00:07,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24440 states to 24440 states and 36490 transitions. [2018-09-10 12:00:07,968 INFO L78 Accepts]: Start accepts. Automaton has 24440 states and 36490 transitions. Word has length 229 [2018-09-10 12:00:07,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:07,969 INFO L480 AbstractCegarLoop]: Abstraction has 24440 states and 36490 transitions. [2018-09-10 12:00:07,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:00:07,969 INFO L276 IsEmpty]: Start isEmpty. Operand 24440 states and 36490 transitions. [2018-09-10 12:00:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-09-10 12:00:07,996 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:07,997 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:00:07,997 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:07,997 INFO L82 PathProgramCache]: Analyzing trace with hash -451305166, now seen corresponding path program 1 times [2018-09-10 12:00:07,998 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:07,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:07,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:07,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:07,999 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:08,292 WARN L175 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:00:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 124 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:00:08,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:00:08,683 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-09-10 12:00:08,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:08,700 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:00:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:08,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:00:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 12:00:09,303 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:00:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 124 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:00:09,725 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:00:09,725 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 12:00:09,725 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:09,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:00:09,726 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:00:09,727 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:00:09,727 INFO L87 Difference]: Start difference. First operand 24440 states and 36490 transitions. Second operand 5 states. [2018-09-10 12:00:28,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:28,509 INFO L93 Difference]: Finished difference Result 65745 states and 107529 transitions. [2018-09-10 12:00:28,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:00:28,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2018-09-10 12:00:28,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:28,743 INFO L225 Difference]: With dead ends: 65745 [2018-09-10 12:00:28,744 INFO L226 Difference]: Without dead ends: 41311 [2018-09-10 12:00:28,829 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 493 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:00:28,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41311 states. [2018-09-10 12:00:30,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41311 to 40818. [2018-09-10 12:00:30,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40818 states. [2018-09-10 12:00:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40818 states to 40818 states and 64034 transitions. [2018-09-10 12:00:30,374 INFO L78 Accepts]: Start accepts. Automaton has 40818 states and 64034 transitions. Word has length 249 [2018-09-10 12:00:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:30,374 INFO L480 AbstractCegarLoop]: Abstraction has 40818 states and 64034 transitions. [2018-09-10 12:00:30,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:00:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 40818 states and 64034 transitions. [2018-09-10 12:00:30,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-09-10 12:00:30,419 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:30,420 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:00:30,420 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:30,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1564750421, now seen corresponding path program 1 times [2018-09-10 12:00:30,421 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:30,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:30,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:30,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:30,422 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 124 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:00:30,800 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:00:30,800 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:00:30,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:30,815 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:00:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:30,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:00:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 12:00:31,028 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:00:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 124 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:00:31,329 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:00:31,329 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-10 12:00:31,330 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:31,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:00:31,331 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:00:31,331 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:00:31,331 INFO L87 Difference]: Start difference. First operand 40818 states and 64034 transitions. Second operand 5 states. [2018-09-10 12:00:49,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:49,038 INFO L93 Difference]: Finished difference Result 100067 states and 173909 transitions. [2018-09-10 12:00:49,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:00:49,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2018-09-10 12:00:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:49,343 INFO L225 Difference]: With dead ends: 100067 [2018-09-10 12:00:49,344 INFO L226 Difference]: Without dead ends: 59255 [2018-09-10 12:00:49,479 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 524 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:00:49,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59255 states. [2018-09-10 12:00:50,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59255 to 58836. [2018-09-10 12:00:50,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58836 states. [2018-09-10 12:00:51,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58836 states to 58836 states and 98395 transitions. [2018-09-10 12:00:51,096 INFO L78 Accepts]: Start accepts. Automaton has 58836 states and 98395 transitions. Word has length 264 [2018-09-10 12:00:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:51,096 INFO L480 AbstractCegarLoop]: Abstraction has 58836 states and 98395 transitions. [2018-09-10 12:00:51,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:00:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 58836 states and 98395 transitions. [2018-09-10 12:00:51,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-09-10 12:00:51,148 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:51,149 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:00:51,149 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:51,149 INFO L82 PathProgramCache]: Analyzing trace with hash -36490571, now seen corresponding path program 1 times [2018-09-10 12:00:51,149 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:51,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:51,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:51,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:51,150 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:51,521 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:00:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:00:51,637 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:00:51,637 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:00:51,637 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:51,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:00:51,638 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:00:51,638 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:00:51,638 INFO L87 Difference]: Start difference. First operand 58836 states and 98395 transitions. Second operand 6 states. [2018-09-10 12:01:03,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:03,223 INFO L93 Difference]: Finished difference Result 130184 states and 247899 transitions. [2018-09-10 12:01:03,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:01:03,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 305 [2018-09-10 12:01:03,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:03,733 INFO L225 Difference]: With dead ends: 130184 [2018-09-10 12:01:03,733 INFO L226 Difference]: Without dead ends: 71354 [2018-09-10 12:01:03,891 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:01:03,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71354 states. [2018-09-10 12:01:06,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71354 to 70628. [2018-09-10 12:01:06,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70628 states. [2018-09-10 12:01:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70628 states to 70628 states and 118496 transitions. [2018-09-10 12:01:06,514 INFO L78 Accepts]: Start accepts. Automaton has 70628 states and 118496 transitions. Word has length 305 [2018-09-10 12:01:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:06,515 INFO L480 AbstractCegarLoop]: Abstraction has 70628 states and 118496 transitions. [2018-09-10 12:01:06,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:01:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 70628 states and 118496 transitions. [2018-09-10 12:01:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-09-10 12:01:06,562 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:06,563 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:01:06,563 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash 98709006, now seen corresponding path program 1 times [2018-09-10 12:01:06,564 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:06,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:06,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:06,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:06,567 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:06,937 WARN L175 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-09-10 12:01:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-10 12:01:07,000 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:01:07,000 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:01:07,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:07,016 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:07,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-10 12:01:07,351 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-10 12:01:07,771 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:01:07,771 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [3] total 5 [2018-09-10 12:01:07,771 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:01:07,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:01:07,773 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:01:07,773 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:01:07,773 INFO L87 Difference]: Start difference. First operand 70628 states and 118496 transitions. Second operand 3 states. [2018-09-10 12:01:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:14,244 INFO L93 Difference]: Finished difference Result 134720 states and 226490 transitions. [2018-09-10 12:01:14,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:01:14,245 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2018-09-10 12:01:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:14,492 INFO L225 Difference]: With dead ends: 134720 [2018-09-10 12:01:14,492 INFO L226 Difference]: Without dead ends: 69733 [2018-09-10 12:01:14,608 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:01:14,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69733 states. [2018-09-10 12:01:15,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69733 to 69729. [2018-09-10 12:01:15,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69729 states. [2018-09-10 12:01:16,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69729 states to 69729 states and 115366 transitions. [2018-09-10 12:01:16,123 INFO L78 Accepts]: Start accepts. Automaton has 69729 states and 115366 transitions. Word has length 327 [2018-09-10 12:01:16,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:16,124 INFO L480 AbstractCegarLoop]: Abstraction has 69729 states and 115366 transitions. [2018-09-10 12:01:16,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:01:16,124 INFO L276 IsEmpty]: Start isEmpty. Operand 69729 states and 115366 transitions. [2018-09-10 12:01:16,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-09-10 12:01:16,156 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:16,156 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:01:16,156 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:16,157 INFO L82 PathProgramCache]: Analyzing trace with hash 910010093, now seen corresponding path program 1 times [2018-09-10 12:01:16,157 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:16,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:16,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:16,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:16,158 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 186 proven. 140 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-10 12:01:16,432 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:01:16,432 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:01:16,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:16,442 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:16,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-09-10 12:01:17,169 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 186 proven. 140 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-10 12:01:17,565 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:01:17,565 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-10 12:01:17,565 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:01:17,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:01:17,566 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:01:17,566 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:01:17,567 INFO L87 Difference]: Start difference. First operand 69729 states and 115366 transitions. Second operand 5 states. [2018-09-10 12:01:34,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:34,331 INFO L93 Difference]: Finished difference Result 183148 states and 332626 transitions. [2018-09-10 12:01:34,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 12:01:34,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2018-09-10 12:01:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:34,732 INFO L225 Difference]: With dead ends: 183148 [2018-09-10 12:01:34,732 INFO L226 Difference]: Without dead ends: 113425 [2018-09-10 12:01:34,892 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 677 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:01:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113425 states. [2018-09-10 12:01:37,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113425 to 113017. [2018-09-10 12:01:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113017 states. [2018-09-10 12:01:38,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113017 states to 113017 states and 187712 transitions. [2018-09-10 12:01:38,146 INFO L78 Accepts]: Start accepts. Automaton has 113017 states and 187712 transitions. Word has length 341 [2018-09-10 12:01:38,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:38,146 INFO L480 AbstractCegarLoop]: Abstraction has 113017 states and 187712 transitions. [2018-09-10 12:01:38,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:01:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand 113017 states and 187712 transitions. [2018-09-10 12:01:38,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-09-10 12:01:38,186 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:38,186 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:01:38,187 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:38,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1490674680, now seen corresponding path program 1 times [2018-09-10 12:01:38,187 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:38,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:38,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:38,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:38,188 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:01:38,588 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:01:38,589 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:01:38,589 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:01:38,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:01:38,589 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:01:38,589 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:01:38,590 INFO L87 Difference]: Start difference. First operand 113017 states and 187712 transitions. Second operand 6 states. [2018-09-10 12:01:56,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:56,002 INFO L93 Difference]: Finished difference Result 273469 states and 514793 transitions. [2018-09-10 12:01:56,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:01:56,002 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 343 [2018-09-10 12:01:56,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:56,901 INFO L225 Difference]: With dead ends: 273469 [2018-09-10 12:01:56,902 INFO L226 Difference]: Without dead ends: 161262 [2018-09-10 12:01:57,177 INFO L604 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 [2018-09-10 12:01:57,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161262 states. [2018-09-10 12:02:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161262 to 160607. [2018-09-10 12:02:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160607 states. [2018-09-10 12:02:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160607 states to 160607 states and 262802 transitions. [2018-09-10 12:02:01,755 INFO L78 Accepts]: Start accepts. Automaton has 160607 states and 262802 transitions. Word has length 343 [2018-09-10 12:02:01,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:02:01,755 INFO L480 AbstractCegarLoop]: Abstraction has 160607 states and 262802 transitions. [2018-09-10 12:02:01,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:02:01,756 INFO L276 IsEmpty]: Start isEmpty. Operand 160607 states and 262802 transitions. [2018-09-10 12:02:01,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-09-10 12:02:01,791 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:02:01,791 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:02:01,791 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:02:01,792 INFO L82 PathProgramCache]: Analyzing trace with hash 86998417, now seen corresponding path program 1 times [2018-09-10 12:02:01,792 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:02:01,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:01,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:01,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:01,793 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:02:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:02,079 WARN L175 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:02:02,543 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 186 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-10 12:02:02,543 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:02,543 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:02:02,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:02,563 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:02,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-09-10 12:02:02,933 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 186 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-09-10 12:02:03,140 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:02:03,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 12:02:03,140 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:02:03,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:02:03,141 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:02:03,141 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:02:03,142 INFO L87 Difference]: Start difference. First operand 160607 states and 262802 transitions. Second operand 5 states. [2018-09-10 12:02:17,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:02:17,638 INFO L93 Difference]: Finished difference Result 380284 states and 674729 transitions. [2018-09-10 12:02:17,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:02:17,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 347 [2018-09-10 12:02:17,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:02:18,700 INFO L225 Difference]: With dead ends: 380284 [2018-09-10 12:02:18,700 INFO L226 Difference]: Without dead ends: 220487 [2018-09-10 12:02:19,119 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 689 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:02:19,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220487 states. [2018-09-10 12:02:24,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220487 to 219635. [2018-09-10 12:02:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219635 states. [2018-09-10 12:02:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219635 states to 219635 states and 353909 transitions. [2018-09-10 12:02:25,172 INFO L78 Accepts]: Start accepts. Automaton has 219635 states and 353909 transitions. Word has length 347 [2018-09-10 12:02:25,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:02:25,172 INFO L480 AbstractCegarLoop]: Abstraction has 219635 states and 353909 transitions. [2018-09-10 12:02:25,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:02:25,172 INFO L276 IsEmpty]: Start isEmpty. Operand 219635 states and 353909 transitions. [2018-09-10 12:02:25,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-09-10 12:02:25,222 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:02:25,223 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:02:25,223 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:02:25,223 INFO L82 PathProgramCache]: Analyzing trace with hash -898282224, now seen corresponding path program 1 times [2018-09-10 12:02:25,223 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:02:25,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:25,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:25,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:25,224 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:02:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-10 12:02:25,483 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:25,483 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:02:25,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:25,492 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:25,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-10 12:02:25,838 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-10 12:02:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-10 12:02:27,158 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:02:27,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-09-10 12:02:27,158 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:02:27,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:02:27,159 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:02:27,159 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:02:27,160 INFO L87 Difference]: Start difference. First operand 219635 states and 353909 transitions. Second operand 3 states. [2018-09-10 12:02:27,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-10 12:02:27,161 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:02:27,167 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:02:27,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:02:27 BoogieIcfgContainer [2018-09-10 12:02:27,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:02:27,169 INFO L168 Benchmark]: Toolchain (without parser) took 225780.50 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -675.0 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-10 12:02:27,170 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-09-10 12:02:27,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2943.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2018-09-10 12:02:27,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 350.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:02:27,172 INFO L168 Benchmark]: Boogie Preprocessor took 1342.48 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 979.9 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:02:27,173 INFO L168 Benchmark]: RCFGBuilder took 15282.46 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 187.7 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 17.0 MB). Peak memory consumption was 772.4 MB. Max. memory is 7.1 GB. [2018-09-10 12:02:27,174 INFO L168 Benchmark]: TraceAbstraction took 205854.49 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 216.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-10 12:02:27,181 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2943.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 350.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1342.48 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 979.9 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15282.46 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 187.7 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 17.0 MB). Peak memory consumption was 772.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205854.49 ms. Allocated memory was 2.7 GB in the beginning and 4.5 GB in the end (delta: 1.8 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 216.9 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: 198]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 198). Cancelled while BasicCegarLoop was constructing difference of abstraction (219635states) and FLOYD_HOARE automaton (currently 2 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 205.7s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 170.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5683 SDtfs, 35828 SDslu, 4885 SDs, 0 SdLazy, 62024 SolverSat, 13563 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 133.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4343 GetRequests, 4244 SyntacticMatches, 12 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219635occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 22.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 3791 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 5262 NumberOfCodeBlocks, 5262 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 7363 ConstructedInterpolants, 0 QuantifiedInterpolants, 4668989 SizeOfPredicates, 15 NumberOfNonLiveVariables, 3757 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 26 InterpolantComputations, 14 PerfectInterpolantSequences, 5168/6146 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label50_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-02-27-195.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label50_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-02-27-195.csv Completed graceful shutdown