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_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:54:31,395 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:54:31,400 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:54:31,423 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:54:31,423 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:54:31,427 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:54:31,428 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:54:31,430 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:54:31,433 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:54:31,434 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:54:31,435 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:54:31,435 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:54:31,436 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:54:31,437 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:54:31,439 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:54:31,440 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:54:31,440 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:54:31,442 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:54:31,445 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:54:31,446 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:54:31,448 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:54:31,449 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:54:31,452 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:54:31,452 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:54:31,453 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:54:31,454 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:54:31,455 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:54:31,456 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:54:31,457 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:54:31,460 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:54:31,460 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:54:31,463 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:54:31,464 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:54:31,464 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:54:31,466 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:54:31,467 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:54:31,468 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 11:54:31,499 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:54:31,500 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:54:31,502 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:54:31,503 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:54:31,503 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:54:31,503 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:54:31,503 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:54:31,504 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:54:31,504 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:54:31,504 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:54:31,504 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:54:31,505 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:54:31,505 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:54:31,506 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:54:31,506 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:54:31,507 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:54:31,507 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:54:31,507 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:54:31,507 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:54:31,508 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:54:31,508 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:54:31,508 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:54:31,508 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:54:31,510 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:54:31,510 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:54:31,510 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:54:31,511 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:54:31,511 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:54:31,511 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:54:31,511 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:54:31,512 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:54:31,512 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:54:31,512 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:54:31,561 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:54:31,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:54:31,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:54:31,580 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:54:31,580 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:54:31,581 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c [2018-09-10 11:54:31,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/809640551/8134405bb343416eb5d9c65bafe3d1a3/FLAG7a25aa6ad [2018-09-10 11:54:32,437 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:54:32,438 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c [2018-09-10 11:54:32,474 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/809640551/8134405bb343416eb5d9c65bafe3d1a3/FLAG7a25aa6ad [2018-09-10 11:54:32,496 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/809640551/8134405bb343416eb5d9c65bafe3d1a3 [2018-09-10 11:54:32,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:54:32,515 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:54:32,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:54:32,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:54:32,525 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:54:32,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:54:32" (1/1) ... [2018-09-10 11:54:32,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a2763a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:32, skipping insertion in model container [2018-09-10 11:54:32,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:54:32" (1/1) ... [2018-09-10 11:54:32,922 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:54:34,076 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:54:34,097 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:54:34,925 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:54:35,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:35 WrapperNode [2018-09-10 11:54:35,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:54:35,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:54:35,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:54:35,363 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:54:35,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:35" (1/1) ... [2018-09-10 11:54:35,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:35" (1/1) ... [2018-09-10 11:54:35,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:54:35,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:54:35,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:54:35,684 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:54:36,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:35" (1/1) ... [2018-09-10 11:54:36,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:35" (1/1) ... [2018-09-10 11:54:36,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:35" (1/1) ... [2018-09-10 11:54:36,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:35" (1/1) ... [2018-09-10 11:54:36,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:35" (1/1) ... [2018-09-10 11:54:36,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:35" (1/1) ... [2018-09-10 11:54:36,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:35" (1/1) ... [2018-09-10 11:54:36,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:54:36,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:54:36,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:54:36,913 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:54:36,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:35" (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 11:54:36,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:54:36,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:54:36,984 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 11:54:36,985 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 11:54:36,985 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 11:54:36,985 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 11:54:36,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:54:36,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:54:36,985 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 11:54:36,986 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 11:54:36,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:54:36,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:54:36,986 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 11:54:36,986 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 11:54:53,179 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:54:53,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:54:53 BoogieIcfgContainer [2018-09-10 11:54:53,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:54:53,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:54:53,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:54:53,184 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:54:53,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:54:32" (1/3) ... [2018-09-10 11:54:53,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42157bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:54:53, skipping insertion in model container [2018-09-10 11:54:53,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:54:35" (2/3) ... [2018-09-10 11:54:53,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42157bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:54:53, skipping insertion in model container [2018-09-10 11:54:53,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:54:53" (3/3) ... [2018-09-10 11:54:53,188 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label20_true-unreach-call.c [2018-09-10 11:54:53,198 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:54:53,210 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:54:53,272 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:54:53,273 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:54:53,273 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:54:53,273 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:54:53,273 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:54:53,274 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:54:53,274 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:54:53,274 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:54:53,274 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:54:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 11:54:53,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-10 11:54:53,327 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:54:53,328 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] [2018-09-10 11:54:53,331 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 11:54:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash 768609348, now seen corresponding path program 1 times [2018-09-10 11:54:53,340 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:54:53,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:53,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:54:53,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:53,394 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:54:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:54:53,882 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 11:54:53,884 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:54:53,885 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:54:53,885 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:54:53,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:54:53,907 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:54:53,907 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:54:53,911 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-10 11:55:08,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:55:08,364 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-09-10 11:55:08,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:55:08,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-09-10 11:55:08,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:55:08,412 INFO L225 Difference]: With dead ends: 3968 [2018-09-10 11:55:08,413 INFO L226 Difference]: Without dead ends: 2842 [2018-09-10 11:55:08,425 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:55:08,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-09-10 11:55:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-09-10 11:55:08,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-09-10 11:55:08,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-09-10 11:55:08,621 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 62 [2018-09-10 11:55:08,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:55:08,622 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-09-10 11:55:08,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:55:08,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-09-10 11:55:08,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-10 11:55:08,635 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:08,635 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, 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 11:55:08,636 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 11:55:08,636 INFO L82 PathProgramCache]: Analyzing trace with hash 513962144, now seen corresponding path program 1 times [2018-09-10 11:55:08,636 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:08,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:08,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:08,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:08,639 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:55:08,960 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:55:08,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:55:08,961 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:55:08,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:55:08,964 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:55:08,964 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:55:08,965 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 6 states. [2018-09-10 11:55:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:55:28,625 INFO L93 Difference]: Finished difference Result 7236 states and 13035 transitions. [2018-09-10 11:55:28,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:55:28,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-09-10 11:55:28,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:55:28,658 INFO L225 Difference]: With dead ends: 7236 [2018-09-10 11:55:28,659 INFO L226 Difference]: Without dead ends: 5261 [2018-09-10 11:55:28,670 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 11:55:28,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2018-09-10 11:55:28,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5234. [2018-09-10 11:55:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5234 states. [2018-09-10 11:55:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8155 transitions. [2018-09-10 11:55:28,829 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8155 transitions. Word has length 132 [2018-09-10 11:55:28,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:55:28,830 INFO L480 AbstractCegarLoop]: Abstraction has 5234 states and 8155 transitions. [2018-09-10 11:55:28,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:55:28,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8155 transitions. [2018-09-10 11:55:28,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-10 11:55:28,846 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:28,846 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, 1, 1, 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 11:55:28,847 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 11:55:28,847 INFO L82 PathProgramCache]: Analyzing trace with hash -2043801860, now seen corresponding path program 1 times [2018-09-10 11:55:28,847 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:28,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:28,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:28,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:28,852 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:55:29,041 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:55:29,041 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:55:29,041 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:55:29,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:55:29,042 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:55:29,042 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:55:29,043 INFO L87 Difference]: Start difference. First operand 5234 states and 8155 transitions. Second operand 6 states. [2018-09-10 11:55:50,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:55:50,255 INFO L93 Difference]: Finished difference Result 16605 states and 27050 transitions. [2018-09-10 11:55:50,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 11:55:50,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-09-10 11:55:50,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:55:50,314 INFO L225 Difference]: With dead ends: 16605 [2018-09-10 11:55:50,314 INFO L226 Difference]: Without dead ends: 11377 [2018-09-10 11:55:50,337 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:55:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11377 states. [2018-09-10 11:55:50,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11377 to 11305. [2018-09-10 11:55:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11305 states. [2018-09-10 11:55:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11305 states to 11305 states and 16041 transitions. [2018-09-10 11:55:50,633 INFO L78 Accepts]: Start accepts. Automaton has 11305 states and 16041 transitions. Word has length 134 [2018-09-10 11:55:50,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:55:50,633 INFO L480 AbstractCegarLoop]: Abstraction has 11305 states and 16041 transitions. [2018-09-10 11:55:50,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:55:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 11305 states and 16041 transitions. [2018-09-10 11:55:50,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-10 11:55:50,638 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:50,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:50,639 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 11:55:50,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1999061089, now seen corresponding path program 1 times [2018-09-10 11:55:50,639 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:50,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:50,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:50,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:50,641 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:55:50,950 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:55:50,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:55:50,950 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:55:50,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:55:50,951 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:55:50,951 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:55:50,951 INFO L87 Difference]: Start difference. First operand 11305 states and 16041 transitions. Second operand 6 states. [2018-09-10 11:56:04,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:04,501 INFO L93 Difference]: Finished difference Result 33978 states and 52439 transitions. [2018-09-10 11:56:04,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:56:04,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-09-10 11:56:04,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:04,622 INFO L225 Difference]: With dead ends: 33978 [2018-09-10 11:56:04,622 INFO L226 Difference]: Without dead ends: 22679 [2018-09-10 11:56:04,688 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 11:56:04,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22679 states. [2018-09-10 11:56:05,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22679 to 22378. [2018-09-10 11:56:05,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22378 states. [2018-09-10 11:56:05,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22378 states to 22378 states and 32152 transitions. [2018-09-10 11:56:05,327 INFO L78 Accepts]: Start accepts. Automaton has 22378 states and 32152 transitions. Word has length 145 [2018-09-10 11:56:05,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:05,327 INFO L480 AbstractCegarLoop]: Abstraction has 22378 states and 32152 transitions. [2018-09-10 11:56:05,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:56:05,328 INFO L276 IsEmpty]: Start isEmpty. Operand 22378 states and 32152 transitions. [2018-09-10 11:56:05,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-10 11:56:05,333 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:05,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:05,336 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 11:56:05,337 INFO L82 PathProgramCache]: Analyzing trace with hash -564804348, now seen corresponding path program 1 times [2018-09-10 11:56:05,337 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:05,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:05,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:05,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:05,338 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:05,784 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:56:05,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:56:05,784 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:05,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:56:05,785 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:56:05,785 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:56:05,785 INFO L87 Difference]: Start difference. First operand 22378 states and 32152 transitions. Second operand 3 states. [2018-09-10 11:56:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:13,188 INFO L93 Difference]: Finished difference Result 44752 states and 64477 transitions. [2018-09-10 11:56:13,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:56:13,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2018-09-10 11:56:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:13,270 INFO L225 Difference]: With dead ends: 44752 [2018-09-10 11:56:13,271 INFO L226 Difference]: Without dead ends: 22380 [2018-09-10 11:56:13,320 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:56:13,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22380 states. [2018-09-10 11:56:13,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22380 to 22361. [2018-09-10 11:56:13,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22361 states. [2018-09-10 11:56:13,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22361 states to 22361 states and 29185 transitions. [2018-09-10 11:56:13,772 INFO L78 Accepts]: Start accepts. Automaton has 22361 states and 29185 transitions. Word has length 178 [2018-09-10 11:56:13,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:13,773 INFO L480 AbstractCegarLoop]: Abstraction has 22361 states and 29185 transitions. [2018-09-10 11:56:13,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:56:13,773 INFO L276 IsEmpty]: Start isEmpty. Operand 22361 states and 29185 transitions. [2018-09-10 11:56:13,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-10 11:56:13,780 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:13,780 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:13,781 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 11:56:13,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1159303874, now seen corresponding path program 1 times [2018-09-10 11:56:13,781 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:13,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:13,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:13,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:13,782 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:14,033 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:56:14,033 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:56:14,033 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:14,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:56:14,034 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:56:14,034 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:56:14,035 INFO L87 Difference]: Start difference. First operand 22361 states and 29185 transitions. Second operand 4 states. [2018-09-10 11:56:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:24,427 INFO L93 Difference]: Finished difference Result 64532 states and 89180 transitions. [2018-09-10 11:56:24,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:56:24,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2018-09-10 11:56:24,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:24,594 INFO L225 Difference]: With dead ends: 64532 [2018-09-10 11:56:24,594 INFO L226 Difference]: Without dead ends: 42177 [2018-09-10 11:56:24,651 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:56:24,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42177 states. [2018-09-10 11:56:25,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42177 to 42173. [2018-09-10 11:56:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42173 states. [2018-09-10 11:56:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42173 states to 42173 states and 55515 transitions. [2018-09-10 11:56:25,399 INFO L78 Accepts]: Start accepts. Automaton has 42173 states and 55515 transitions. Word has length 183 [2018-09-10 11:56:25,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:25,399 INFO L480 AbstractCegarLoop]: Abstraction has 42173 states and 55515 transitions. [2018-09-10 11:56:25,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:56:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 42173 states and 55515 transitions. [2018-09-10 11:56:25,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-10 11:56:25,409 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:25,410 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:56:25,410 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 11:56:25,410 INFO L82 PathProgramCache]: Analyzing trace with hash -149121228, now seen corresponding path program 1 times [2018-09-10 11:56:25,411 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:25,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:25,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:25,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:25,412 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 110 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:56:26,081 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:56:26,081 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 11:56:26,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:26,098 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:56:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:26,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:56:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-10 11:56:26,483 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:56:26,700 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 11:56:26,803 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 11:56:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 110 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:56:27,273 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:56:27,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-10 11:56:27,274 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:27,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:56:27,274 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:56:27,275 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:56:27,275 INFO L87 Difference]: Start difference. First operand 42173 states and 55515 transitions. Second operand 5 states. [2018-09-10 11:56:51,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:51,802 INFO L93 Difference]: Finished difference Result 122849 states and 174306 transitions. [2018-09-10 11:56:51,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:56:51,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2018-09-10 11:56:51,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:52,211 INFO L225 Difference]: With dead ends: 122849 [2018-09-10 11:56:52,211 INFO L226 Difference]: Without dead ends: 80682 [2018-09-10 11:56:52,431 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 474 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:56:52,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80682 states. [2018-09-10 11:56:54,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80682 to 79412. [2018-09-10 11:56:54,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79412 states. [2018-09-10 11:56:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79412 states to 79412 states and 108312 transitions. [2018-09-10 11:56:54,251 INFO L78 Accepts]: Start accepts. Automaton has 79412 states and 108312 transitions. Word has length 238 [2018-09-10 11:56:54,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:54,251 INFO L480 AbstractCegarLoop]: Abstraction has 79412 states and 108312 transitions. [2018-09-10 11:56:54,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:56:54,251 INFO L276 IsEmpty]: Start isEmpty. Operand 79412 states and 108312 transitions. [2018-09-10 11:56:54,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-09-10 11:56:54,265 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:54,265 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, 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] [2018-09-10 11:56:54,265 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 11:56:54,266 INFO L82 PathProgramCache]: Analyzing trace with hash -315510288, now seen corresponding path program 1 times [2018-09-10 11:56:54,266 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:54,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:54,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:54,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:54,267 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 110 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:56:54,662 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:56:54,662 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:56:54,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:54,679 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:56:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:54,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:56:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-10 11:56:54,991 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:56:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 110 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:56:55,967 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:56:55,967 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-10 11:56:55,967 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:55,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:56:55,968 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:56:55,968 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:56:55,969 INFO L87 Difference]: Start difference. First operand 79412 states and 108312 transitions. Second operand 5 states. [2018-09-10 11:57:15,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:15,619 INFO L93 Difference]: Finished difference Result 197093 states and 292436 transitions. [2018-09-10 11:57:15,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:57:15,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2018-09-10 11:57:15,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:16,211 INFO L225 Difference]: With dead ends: 197093 [2018-09-10 11:57:16,212 INFO L226 Difference]: Without dead ends: 117687 [2018-09-10 11:57:16,421 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 478 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:57:16,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117687 states. [2018-09-10 11:57:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117687 to 117105. [2018-09-10 11:57:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117105 states. [2018-09-10 11:57:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117105 states to 117105 states and 168940 transitions. [2018-09-10 11:57:18,989 INFO L78 Accepts]: Start accepts. Automaton has 117105 states and 168940 transitions. Word has length 240 [2018-09-10 11:57:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:18,989 INFO L480 AbstractCegarLoop]: Abstraction has 117105 states and 168940 transitions. [2018-09-10 11:57:18,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:57:18,989 INFO L276 IsEmpty]: Start isEmpty. Operand 117105 states and 168940 transitions. [2018-09-10 11:57:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-09-10 11:57:18,999 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:18,999 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, 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] [2018-09-10 11:57:18,999 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 11:57:19,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1190880928, now seen corresponding path program 1 times [2018-09-10 11:57:19,000 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:19,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:19,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:19,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:19,001 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-10 11:57:19,283 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:57:19,283 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 11:57:19,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:19,292 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:57:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:19,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:57:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 11:57:19,687 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:57:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 115 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:57:20,667 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:57:20,668 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:57:20,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:20,684 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:57:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:20,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:57:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-10 11:57:21,067 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:57:21,463 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-10 11:57:21,465 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-10 11:57:21,465 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 7, 8, 5] total 17 [2018-09-10 11:57:21,466 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:21,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:57:21,466 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:57:21,467 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-10 11:57:21,467 INFO L87 Difference]: Start difference. First operand 117105 states and 168940 transitions. Second operand 5 states. [2018-09-10 11:57:31,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:31,755 INFO L93 Difference]: Finished difference Result 234805 states and 341651 transitions. [2018-09-10 11:57:31,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:57:31,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2018-09-10 11:57:31,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:33,021 INFO L225 Difference]: With dead ends: 234805 [2018-09-10 11:57:33,021 INFO L226 Difference]: Without dead ends: 117706 [2018-09-10 11:57:33,215 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 999 GetRequests, 976 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-09-10 11:57:33,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117706 states. [2018-09-10 11:57:34,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117706 to 117589. [2018-09-10 11:57:34,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117589 states. [2018-09-10 11:57:34,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117589 states to 117589 states and 149215 transitions. [2018-09-10 11:57:34,666 INFO L78 Accepts]: Start accepts. Automaton has 117589 states and 149215 transitions. Word has length 248 [2018-09-10 11:57:34,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:34,667 INFO L480 AbstractCegarLoop]: Abstraction has 117589 states and 149215 transitions. [2018-09-10 11:57:34,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:57:34,667 INFO L276 IsEmpty]: Start isEmpty. Operand 117589 states and 149215 transitions. [2018-09-10 11:57:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-09-10 11:57:34,683 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:34,683 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:57:34,683 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 11:57:34,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1477310436, now seen corresponding path program 1 times [2018-09-10 11:57:34,684 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:34,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:34,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:34,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:34,685 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-09-10 11:57:34,915 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:57:34,915 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 11:57:34,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:34,924 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:57:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:35,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:57:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:57:35,140 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:57:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:57:35,304 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:57:35,304 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:57:35,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:35,321 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:57:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:35,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:57:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-09-10 11:57:35,679 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:57:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-09-10 11:57:35,885 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-10 11:57:35,885 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5] total 12 [2018-09-10 11:57:35,885 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:35,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:57:35,887 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:57:35,887 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:57:35,887 INFO L87 Difference]: Start difference. First operand 117589 states and 149215 transitions. Second operand 5 states. [2018-09-10 11:57:49,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:49,402 INFO L93 Difference]: Finished difference Result 236487 states and 300937 transitions. [2018-09-10 11:57:49,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:57:49,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 289 [2018-09-10 11:57:49,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:49,796 INFO L225 Difference]: With dead ends: 236487 [2018-09-10 11:57:49,797 INFO L226 Difference]: Without dead ends: 119708 [2018-09-10 11:57:50,000 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1145 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:57:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119708 states. [2018-09-10 11:57:52,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119708 to 117259. [2018-09-10 11:57:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117259 states. [2018-09-10 11:57:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117259 states to 117259 states and 145341 transitions. [2018-09-10 11:57:52,441 INFO L78 Accepts]: Start accepts. Automaton has 117259 states and 145341 transitions. Word has length 289 [2018-09-10 11:57:52,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:52,441 INFO L480 AbstractCegarLoop]: Abstraction has 117259 states and 145341 transitions. [2018-09-10 11:57:52,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:57:52,441 INFO L276 IsEmpty]: Start isEmpty. Operand 117259 states and 145341 transitions. [2018-09-10 11:57:52,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-09-10 11:57:52,459 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:52,459 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:57:52,459 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 11:57:52,460 INFO L82 PathProgramCache]: Analyzing trace with hash 380337346, now seen corresponding path program 1 times [2018-09-10 11:57:52,460 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:52,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:52,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:52,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:52,461 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 165 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 11:57:52,744 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:57:52,744 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 11:57:52,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:52,754 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:57:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:52,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:57:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-09-10 11:57:53,238 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:57:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 165 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 11:57:53,425 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:57:53,425 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-10 11:57:53,425 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:53,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:57:53,426 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:57:53,426 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:57:53,427 INFO L87 Difference]: Start difference. First operand 117259 states and 145341 transitions. Second operand 5 states. [2018-09-10 11:58:09,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:09,048 INFO L93 Difference]: Finished difference Result 288916 states and 366010 transitions. [2018-09-10 11:58:09,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:58:09,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2018-09-10 11:58:09,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:09,491 INFO L225 Difference]: With dead ends: 288916 [2018-09-10 11:58:09,491 INFO L226 Difference]: Without dead ends: 172467 [2018-09-10 11:58:09,705 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 659 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:58:09,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172467 states. [2018-09-10 11:58:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172467 to 172146. [2018-09-10 11:58:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172146 states. [2018-09-10 11:58:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172146 states to 172146 states and 208014 transitions. [2018-09-10 11:58:13,252 INFO L78 Accepts]: Start accepts. Automaton has 172146 states and 208014 transitions. Word has length 332 [2018-09-10 11:58:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:13,252 INFO L480 AbstractCegarLoop]: Abstraction has 172146 states and 208014 transitions. [2018-09-10 11:58:13,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:58:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 172146 states and 208014 transitions. [2018-09-10 11:58:13,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-09-10 11:58:13,264 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:13,265 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:58:13,265 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 11:58:13,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1978961966, now seen corresponding path program 1 times [2018-09-10 11:58:13,265 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:13,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:13,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:13,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:13,266 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-09-10 11:58:15,019 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:58:15,019 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:58:15,019 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:15,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:58:15,020 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:58:15,020 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:58:15,020 INFO L87 Difference]: Start difference. First operand 172146 states and 208014 transitions. Second operand 4 states. Received shutdown request... [2018-09-10 11:58:25,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:58:25,589 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:58:25,594 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:58:25,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:58:25 BoogieIcfgContainer [2018-09-10 11:58:25,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:58:25,596 INFO L168 Benchmark]: Toolchain (without parser) took 233085.16 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -99.0 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-10 11:58:25,597 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:58:25,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2845.65 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: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. [2018-09-10 11:58:25,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 320.99 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: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:58:25,599 INFO L168 Benchmark]: Boogie Preprocessor took 1227.97 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 989.3 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 11:58:25,600 INFO L168 Benchmark]: RCFGBuilder took 16267.31 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 151.0 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 92.6 MB). Peak memory consumption was 743.9 MB. Max. memory is 7.1 GB. [2018-09-10 11:58:25,601 INFO L168 Benchmark]: TraceAbstraction took 212414.29 ms. Allocated memory was 2.7 GB in the beginning and 3.2 GB in the end (delta: 576.2 MB). Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 730.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-09-10 11:58:25,606 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2845.65 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: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 320.99 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: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1227.97 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 989.3 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 16267.31 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 151.0 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 92.6 MB). Peak memory consumption was 743.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212414.29 ms. Allocated memory was 2.7 GB in the beginning and 3.2 GB in the end (delta: 576.2 MB). Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 730.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 177]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 177). Cancelled while BasicCegarLoop was constructing difference of abstraction (172146states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (172047 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 212.3s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 185.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8477 SDtfs, 37632 SDslu, 5141 SDs, 0 SdLazy, 68065 SolverSat, 16010 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 149.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3856 GetRequests, 3752 SyntacticMatches, 19 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172146occurred 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: 14.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 6023 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 4408 NumberOfCodeBlocks, 4408 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 6266 ConstructedInterpolants, 0 QuantifiedInterpolants, 4598546 SizeOfPredicates, 10 NumberOfNonLiveVariables, 3472 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 26 InterpolantComputations, 12 PerfectInterpolantSequences, 4287/4906 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_label20_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-58-25-621.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label20_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-58-25-621.csv Completed graceful shutdown