java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:32:14,451 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:32:14,454 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:32:14,473 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:32:14,473 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:32:14,474 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:32:14,477 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:32:14,479 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:32:14,482 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:32:14,483 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:32:14,491 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:32:14,492 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:32:14,493 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:32:14,493 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:32:14,497 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:32:14,497 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:32:14,498 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:32:14,501 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:32:14,505 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:32:14,507 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:32:14,508 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:32:14,509 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:32:14,511 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:32:14,511 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:32:14,511 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:32:14,512 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:32:14,513 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:32:14,514 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:32:14,515 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:32:14,516 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:32:14,516 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:32:14,516 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:32:14,517 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:32:14,517 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:32:14,518 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:32:14,519 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:32:14,519 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 [2018-07-24 12:32:14,534 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:32:14,534 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:32:14,535 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:32:14,535 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:32:14,536 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:32:14,536 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:32:14,536 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:32:14,536 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:32:14,537 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:32:14,537 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:32:14,538 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:32:14,538 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:32:14,539 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:32:14,539 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:32:14,539 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:32:14,539 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:32:14,539 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:32:14,540 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:32:14,540 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:32:14,540 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:32:14,541 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:32:14,542 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:32:14,542 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:32:14,542 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:32:14,542 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:32:14,542 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:32:14,543 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:32:14,543 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:32:14,543 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:32:14,543 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:32:14,543 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:32:14,544 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:32:14,544 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:32:14,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:32:14,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:32:14,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:32:14,624 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:32:14,625 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:32:14,625 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label31_false-unreach-call.c [2018-07-24 12:32:14,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8bdbd1e0/bf2ccf30b628480ea51f6ef1648fda0d/FLAG89d9a81b3 [2018-07-24 12:32:15,389 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:32:15,391 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label31_false-unreach-call.c [2018-07-24 12:32:15,423 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8bdbd1e0/bf2ccf30b628480ea51f6ef1648fda0d/FLAG89d9a81b3 [2018-07-24 12:32:15,444 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8bdbd1e0/bf2ccf30b628480ea51f6ef1648fda0d [2018-07-24 12:32:15,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:32:15,458 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:32:15,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:32:15,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:32:15,468 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:32:15,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:32:15" (1/1) ... [2018-07-24 12:32:15,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f06eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:15, skipping insertion in model container [2018-07-24 12:32:15,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:32:15" (1/1) ... [2018-07-24 12:32:15,834 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:32:16,602 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:32:16,619 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:32:17,088 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:32:17,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:17 WrapperNode [2018-07-24 12:32:17,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:32:17,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:32:17,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:32:17,255 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:32:17,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:17" (1/1) ... [2018-07-24 12:32:17,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:17" (1/1) ... [2018-07-24 12:32:17,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:32:17,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:32:17,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:32:17,453 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:32:17,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:17" (1/1) ... [2018-07-24 12:32:17,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:17" (1/1) ... [2018-07-24 12:32:17,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:17" (1/1) ... [2018-07-24 12:32:17,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:17" (1/1) ... [2018-07-24 12:32:17,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:17" (1/1) ... [2018-07-24 12:32:17,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:17" (1/1) ... [2018-07-24 12:32:18,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:17" (1/1) ... [2018-07-24 12:32:18,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:32:18,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:32:18,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:32:18,086 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:32:18,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:32:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:32:18,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:32:18,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:32:18,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:32:18,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:32:18,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:32:18,157 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:32:18,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:32:18,157 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:32:18,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:32:18,158 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:32:18,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:32:26,336 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:32:26,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:32:26 BoogieIcfgContainer [2018-07-24 12:32:26,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:32:26,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:32:26,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:32:26,342 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:32:26,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:32:15" (1/3) ... [2018-07-24 12:32:26,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd3c45e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:32:26, skipping insertion in model container [2018-07-24 12:32:26,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:32:17" (2/3) ... [2018-07-24 12:32:26,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd3c45e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:32:26, skipping insertion in model container [2018-07-24 12:32:26,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:32:26" (3/3) ... [2018-07-24 12:32:26,346 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label31_false-unreach-call.c [2018-07-24 12:32:26,355 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:32:26,365 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:32:26,426 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:32:26,427 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:32:26,427 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:32:26,427 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:32:26,427 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:32:26,428 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:32:26,428 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:32:26,428 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:32:26,428 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:32:26,470 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-24 12:32:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-24 12:32:26,477 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:32:26,478 INFO L353 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] [2018-07-24 12:32:26,479 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:32:26,484 INFO L82 PathProgramCache]: Analyzing trace with hash -149302172, now seen corresponding path program 1 times [2018-07-24 12:32:26,487 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:32:26,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:26,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:26,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:26,533 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:32:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:26,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:26,900 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:32:26,901 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:32:26,901 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:32:26,907 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:32:26,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:32:26,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:32:26,927 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-24 12:32:33,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:32:33,709 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-24 12:32:33,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:32:33,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-07-24 12:32:33,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:32:33,745 INFO L225 Difference]: With dead ends: 2251 [2018-07-24 12:32:33,745 INFO L226 Difference]: Without dead ends: 1474 [2018-07-24 12:32:33,755 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:32:33,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-24 12:32:33,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-24 12:32:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-24 12:32:33,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-07-24 12:32:33,914 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 22 [2018-07-24 12:32:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:32:33,915 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-07-24 12:32:33,915 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:32:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-07-24 12:32:33,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-07-24 12:32:33,923 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:32:33,924 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:32:33,924 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:32:33,926 INFO L82 PathProgramCache]: Analyzing trace with hash 424986634, now seen corresponding path program 1 times [2018-07-24 12:32:33,927 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:32:33,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:33,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:33,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:33,929 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:32:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:34,262 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:32:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:34,344 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:32:34,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:32:34,344 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:32:34,346 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:32:34,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:32:34,347 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:32:34,347 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-07-24 12:32:45,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:32:45,004 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-07-24 12:32:45,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:32:45,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-07-24 12:32:45,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:32:45,026 INFO L225 Difference]: With dead ends: 4422 [2018-07-24 12:32:45,026 INFO L226 Difference]: Without dead ends: 2954 [2018-07-24 12:32:45,031 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:32:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-07-24 12:32:45,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-07-24 12:32:45,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-07-24 12:32:45,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5031 transitions. [2018-07-24 12:32:45,127 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5031 transitions. Word has length 96 [2018-07-24 12:32:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:32:45,129 INFO L471 AbstractCegarLoop]: Abstraction has 2928 states and 5031 transitions. [2018-07-24 12:32:45,129 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:32:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5031 transitions. [2018-07-24 12:32:45,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-24 12:32:45,137 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:32:45,138 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:32:45,138 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:32:45,140 INFO L82 PathProgramCache]: Analyzing trace with hash 550368731, now seen corresponding path program 1 times [2018-07-24 12:32:45,140 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:32:45,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:45,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:32:45,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:32:45,143 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:32:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:32:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:32:45,357 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:32:45,358 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:32:45,358 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:32:45,358 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:32:45,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:32:45,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:32:45,359 INFO L87 Difference]: Start difference. First operand 2928 states and 5031 transitions. Second operand 6 states. [2018-07-24 12:33:00,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:00,036 INFO L93 Difference]: Finished difference Result 11827 states and 21334 transitions. [2018-07-24 12:33:00,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 12:33:00,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-07-24 12:33:00,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:00,096 INFO L225 Difference]: With dead ends: 11827 [2018-07-24 12:33:00,196 INFO L226 Difference]: Without dead ends: 8905 [2018-07-24 12:33:00,223 INFO L573 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 [2018-07-24 12:33:00,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8905 states. [2018-07-24 12:33:00,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8905 to 8827. [2018-07-24 12:33:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8827 states. [2018-07-24 12:33:00,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8827 states to 8827 states and 13810 transitions. [2018-07-24 12:33:00,506 INFO L78 Accepts]: Start accepts. Automaton has 8827 states and 13810 transitions. Word has length 99 [2018-07-24 12:33:00,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:00,507 INFO L471 AbstractCegarLoop]: Abstraction has 8827 states and 13810 transitions. [2018-07-24 12:33:00,507 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:33:00,507 INFO L276 IsEmpty]: Start isEmpty. Operand 8827 states and 13810 transitions. [2018-07-24 12:33:00,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-24 12:33:00,510 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:00,510 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:00,510 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:00,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2083082945, now seen corresponding path program 1 times [2018-07-24 12:33:00,511 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:00,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:00,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:00,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:00,512 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:00,969 WARN L169 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-07-24 12:33:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:01,135 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:01,135 INFO L191 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 [2018-07-24 12:33:01,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:01,143 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:01,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:01,369 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:01,370 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:01,540 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:33:01,540 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-07-24 12:33:01,540 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:33:01,541 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:33:01,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:33:01,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:33:01,542 INFO L87 Difference]: Start difference. First operand 8827 states and 13810 transitions. Second operand 3 states. [2018-07-24 12:33:06,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:06,878 INFO L93 Difference]: Finished difference Result 25514 states and 41000 transitions. [2018-07-24 12:33:06,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:33:06,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2018-07-24 12:33:06,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:06,986 INFO L225 Difference]: With dead ends: 25514 [2018-07-24 12:33:06,986 INFO L226 Difference]: Without dead ends: 16693 [2018-07-24 12:33:07,040 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:33:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16693 states. [2018-07-24 12:33:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16693 to 16693. [2018-07-24 12:33:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16693 states. [2018-07-24 12:33:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16693 states to 16693 states and 24183 transitions. [2018-07-24 12:33:07,428 INFO L78 Accepts]: Start accepts. Automaton has 16693 states and 24183 transitions. Word has length 129 [2018-07-24 12:33:07,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:07,429 INFO L471 AbstractCegarLoop]: Abstraction has 16693 states and 24183 transitions. [2018-07-24 12:33:07,429 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:33:07,429 INFO L276 IsEmpty]: Start isEmpty. Operand 16693 states and 24183 transitions. [2018-07-24 12:33:07,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-24 12:33:07,434 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:07,435 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:07,435 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:07,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1803693941, now seen corresponding path program 1 times [2018-07-24 12:33:07,436 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:07,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:07,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:07,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:07,437 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:07,738 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:33:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:08,168 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:33:08,169 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:33:08,169 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:33:08,170 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:33:08,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:33:08,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:33:08,170 INFO L87 Difference]: Start difference. First operand 16693 states and 24183 transitions. Second operand 6 states. [2018-07-24 12:33:14,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:14,563 INFO L93 Difference]: Finished difference Result 41453 states and 60642 transitions. [2018-07-24 12:33:14,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:33:14,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2018-07-24 12:33:14,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:14,669 INFO L225 Difference]: With dead ends: 41453 [2018-07-24 12:33:14,669 INFO L226 Difference]: Without dead ends: 24766 [2018-07-24 12:33:14,707 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:33:14,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24766 states. [2018-07-24 12:33:15,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24766 to 24715. [2018-07-24 12:33:15,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24715 states. [2018-07-24 12:33:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24715 states to 24715 states and 33087 transitions. [2018-07-24 12:33:15,218 INFO L78 Accepts]: Start accepts. Automaton has 24715 states and 33087 transitions. Word has length 203 [2018-07-24 12:33:15,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:15,219 INFO L471 AbstractCegarLoop]: Abstraction has 24715 states and 33087 transitions. [2018-07-24 12:33:15,219 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:33:15,219 INFO L276 IsEmpty]: Start isEmpty. Operand 24715 states and 33087 transitions. [2018-07-24 12:33:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-24 12:33:15,225 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:15,225 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:33:15,225 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:15,225 INFO L82 PathProgramCache]: Analyzing trace with hash -80826875, now seen corresponding path program 1 times [2018-07-24 12:33:15,226 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:15,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:15,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:15,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:15,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:15,779 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:15,779 INFO L191 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 [2018-07-24 12:33:15,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:15,787 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:15,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:16,098 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:16,265 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:16,265 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:33:16,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:16,283 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:16,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:16,497 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:16,767 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:33:16,768 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:33:16,768 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:33:16,769 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:33:16,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:33:16,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:33:16,772 INFO L87 Difference]: Start difference. First operand 24715 states and 33087 transitions. Second operand 9 states. [2018-07-24 12:33:33,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:33,104 INFO L93 Difference]: Finished difference Result 76560 states and 121589 transitions. [2018-07-24 12:33:33,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 12:33:33,104 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2018-07-24 12:33:33,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:33,521 INFO L225 Difference]: With dead ends: 76560 [2018-07-24 12:33:33,521 INFO L226 Difference]: Without dead ends: 51765 [2018-07-24 12:33:33,685 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 877 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-07-24 12:33:33,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51765 states. [2018-07-24 12:33:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51765 to 50977. [2018-07-24 12:33:34,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50977 states. [2018-07-24 12:33:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50977 states to 50977 states and 67960 transitions. [2018-07-24 12:33:35,126 INFO L78 Accepts]: Start accepts. Automaton has 50977 states and 67960 transitions. Word has length 219 [2018-07-24 12:33:35,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:35,127 INFO L471 AbstractCegarLoop]: Abstraction has 50977 states and 67960 transitions. [2018-07-24 12:33:35,127 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:33:35,127 INFO L276 IsEmpty]: Start isEmpty. Operand 50977 states and 67960 transitions. [2018-07-24 12:33:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-24 12:33:35,151 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:35,151 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:35,151 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:35,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1324944950, now seen corresponding path program 1 times [2018-07-24 12:33:35,152 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:35,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:35,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:35,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:35,153 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 138 proven. 89 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 12:33:35,402 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:35,402 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:33:35,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:35,412 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:35,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 12:33:35,893 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 138 proven. 89 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 12:33:36,088 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:36,088 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:33:36,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:36,104 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:36,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 12:33:36,884 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 138 proven. 89 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 12:33:37,156 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:33:37,156 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 12:33:37,156 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:33:37,157 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:33:37,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:33:37,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:33:37,159 INFO L87 Difference]: Start difference. First operand 50977 states and 67960 transitions. Second operand 9 states. [2018-07-24 12:33:47,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:33:47,858 INFO L93 Difference]: Finished difference Result 106379 states and 143287 transitions. [2018-07-24 12:33:47,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 12:33:47,858 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 330 [2018-07-24 12:33:47,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:33:48,089 INFO L225 Difference]: With dead ends: 106379 [2018-07-24 12:33:48,089 INFO L226 Difference]: Without dead ends: 56192 [2018-07-24 12:33:48,256 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1336 GetRequests, 1315 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:33:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56192 states. [2018-07-24 12:33:49,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56192 to 55410. [2018-07-24 12:33:49,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55410 states. [2018-07-24 12:33:49,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55410 states to 55410 states and 70513 transitions. [2018-07-24 12:33:49,398 INFO L78 Accepts]: Start accepts. Automaton has 55410 states and 70513 transitions. Word has length 330 [2018-07-24 12:33:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:33:49,399 INFO L471 AbstractCegarLoop]: Abstraction has 55410 states and 70513 transitions. [2018-07-24 12:33:49,399 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:33:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand 55410 states and 70513 transitions. [2018-07-24 12:33:49,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-07-24 12:33:49,431 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:49,432 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:49,432 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:49,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1178696711, now seen corresponding path program 1 times [2018-07-24 12:33:49,432 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:49,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:49,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:49,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:49,434 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 171 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:33:50,036 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:50,036 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:33:50,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:50,043 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:50,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 12:33:50,408 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 171 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:33:51,135 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:33:51,135 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:33:51,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:51,152 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:33:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:51,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:33:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 12:33:51,680 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:33:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 171 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:33:52,594 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:33:52,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 12:33:52,595 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:33:52,598 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:33:52,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:33:52,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:33:52,598 INFO L87 Difference]: Start difference. First operand 55410 states and 70513 transitions. Second operand 9 states. [2018-07-24 12:34:10,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:10,381 INFO L93 Difference]: Finished difference Result 155289 states and 228080 transitions. [2018-07-24 12:34:10,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 12:34:10,382 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 467 [2018-07-24 12:34:10,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:11,115 INFO L225 Difference]: With dead ends: 155289 [2018-07-24 12:34:11,116 INFO L226 Difference]: Without dead ends: 97690 [2018-07-24 12:34:12,073 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1890 GetRequests, 1869 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:34:12,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97690 states. [2018-07-24 12:34:13,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97690 to 97404. [2018-07-24 12:34:13,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97404 states. [2018-07-24 12:34:14,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97404 states to 97404 states and 133508 transitions. [2018-07-24 12:34:14,776 INFO L78 Accepts]: Start accepts. Automaton has 97404 states and 133508 transitions. Word has length 467 [2018-07-24 12:34:14,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:14,777 INFO L471 AbstractCegarLoop]: Abstraction has 97404 states and 133508 transitions. [2018-07-24 12:34:14,777 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:34:14,777 INFO L276 IsEmpty]: Start isEmpty. Operand 97404 states and 133508 transitions. [2018-07-24 12:34:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-07-24 12:34:14,834 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:14,834 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:34:14,834 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:34:14,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1626383758, now seen corresponding path program 1 times [2018-07-24 12:34:14,835 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:14,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:14,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:14,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:14,836 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:15,582 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:34:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 146 proven. 159 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-07-24 12:34:16,471 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:16,471 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:34:17,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:17,137 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:17,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 304 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 12:34:17,494 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 304 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 12:34:17,816 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:17,816 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:34:17,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:17,836 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:18,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 304 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 12:34:18,361 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 304 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 12:34:18,680 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:34:18,681 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 22 [2018-07-24 12:34:18,681 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:34:18,682 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 12:34:18,682 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 12:34:18,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2018-07-24 12:34:18,683 INFO L87 Difference]: Start difference. First operand 97404 states and 133508 transitions. Second operand 16 states. [2018-07-24 12:34:43,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:43,331 INFO L93 Difference]: Finished difference Result 180933 states and 244777 transitions. [2018-07-24 12:34:43,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-07-24 12:34:43,334 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 504 [2018-07-24 12:34:43,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:43,639 INFO L225 Difference]: With dead ends: 180933 [2018-07-24 12:34:43,639 INFO L226 Difference]: Without dead ends: 81568 [2018-07-24 12:34:44,057 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2101 GetRequests, 2039 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=685, Invalid=3097, Unknown=0, NotChecked=0, Total=3782 [2018-07-24 12:34:44,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81568 states. [2018-07-24 12:34:45,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81568 to 78719. [2018-07-24 12:34:45,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78719 states. [2018-07-24 12:34:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78719 states to 78719 states and 93399 transitions. [2018-07-24 12:34:45,976 INFO L78 Accepts]: Start accepts. Automaton has 78719 states and 93399 transitions. Word has length 504 [2018-07-24 12:34:45,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:45,977 INFO L471 AbstractCegarLoop]: Abstraction has 78719 states and 93399 transitions. [2018-07-24 12:34:45,977 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 12:34:45,977 INFO L276 IsEmpty]: Start isEmpty. Operand 78719 states and 93399 transitions. [2018-07-24 12:34:45,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-07-24 12:34:45,997 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:45,998 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:34:45,998 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:34:45,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1826935533, now seen corresponding path program 1 times [2018-07-24 12:34:45,999 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:45,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:46,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:46,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:46,000 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:46,336 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 30 proven. 118 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:34:46,336 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:46,336 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:34:46,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:46,345 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:46,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 12:34:46,761 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 30 proven. 85 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-07-24 12:34:47,714 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:34:47,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 9 [2018-07-24 12:34:47,715 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:34:47,716 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:34:47,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:34:47,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:34:47,717 INFO L87 Difference]: Start difference. First operand 78719 states and 93399 transitions. Second operand 3 states. [2018-07-24 12:34:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:52,138 INFO L93 Difference]: Finished difference Result 165969 states and 198622 transitions. [2018-07-24 12:34:52,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:34:52,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 554 [2018-07-24 12:34:52,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:52,486 INFO L225 Difference]: With dead ends: 165969 [2018-07-24 12:34:52,486 INFO L226 Difference]: Without dead ends: 83762 [2018-07-24 12:34:52,732 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1115 GetRequests, 1107 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:34:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83762 states. [2018-07-24 12:34:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83762 to 83044. [2018-07-24 12:34:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83044 states. [2018-07-24 12:34:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83044 states to 83044 states and 97525 transitions. [2018-07-24 12:34:54,566 INFO L78 Accepts]: Start accepts. Automaton has 83044 states and 97525 transitions. Word has length 554 [2018-07-24 12:34:54,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:54,566 INFO L471 AbstractCegarLoop]: Abstraction has 83044 states and 97525 transitions. [2018-07-24 12:34:54,566 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:34:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 83044 states and 97525 transitions. [2018-07-24 12:34:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-07-24 12:34:54,574 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:54,574 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:34:54,575 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:34:54,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1492812697, now seen corresponding path program 1 times [2018-07-24 12:34:54,575 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:54,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:54,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:54,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:54,576 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:55,125 WARN L169 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-07-24 12:34:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 21 proven. 127 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:34:55,310 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:55,310 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:34:55,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:55,318 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:55,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 12:34:55,680 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 12:34:55,932 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:34:55,932 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-07-24 12:34:55,932 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:34:55,933 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:34:55,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:34:55,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:34:55,933 INFO L87 Difference]: Start difference. First operand 83044 states and 97525 transitions. Second operand 3 states. [2018-07-24 12:35:00,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:00,171 INFO L93 Difference]: Finished difference Result 169547 states and 197057 transitions. [2018-07-24 12:35:00,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:35:00,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 553 [2018-07-24 12:35:00,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:00,402 INFO L225 Difference]: With dead ends: 169547 [2018-07-24 12:35:00,403 INFO L226 Difference]: Without dead ends: 90024 [2018-07-24 12:35:00,619 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1116 GetRequests, 1106 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:35:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90024 states. [2018-07-24 12:35:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90024 to 88827. [2018-07-24 12:35:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88827 states. [2018-07-24 12:35:01,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88827 states to 88827 states and 98196 transitions. [2018-07-24 12:35:01,706 INFO L78 Accepts]: Start accepts. Automaton has 88827 states and 98196 transitions. Word has length 553 [2018-07-24 12:35:01,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:01,707 INFO L471 AbstractCegarLoop]: Abstraction has 88827 states and 98196 transitions. [2018-07-24 12:35:01,707 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:35:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand 88827 states and 98196 transitions. [2018-07-24 12:35:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2018-07-24 12:35:01,717 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:01,717 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:01,717 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:01,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2054529130, now seen corresponding path program 1 times [2018-07-24 12:35:01,718 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:01,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:01,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:01,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:01,719 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:02,127 WARN L169 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:35:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 52 proven. 304 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2018-07-24 12:35:03,440 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:03,440 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:35:03,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:03,448 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:03,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2018-07-24 12:35:03,805 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2018-07-24 12:35:04,012 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:35:04,012 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-07-24 12:35:04,012 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:35:04,013 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:35:04,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:35:04,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:35:04,014 INFO L87 Difference]: Start difference. First operand 88827 states and 98196 transitions. Second operand 3 states. [2018-07-24 12:35:07,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:07,541 INFO L93 Difference]: Finished difference Result 172787 states and 191382 transitions. [2018-07-24 12:35:07,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:35:07,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 622 [2018-07-24 12:35:07,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:08,218 INFO L225 Difference]: With dead ends: 172787 [2018-07-24 12:35:08,218 INFO L226 Difference]: Without dead ends: 87481 [2018-07-24 12:35:08,310 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1257 GetRequests, 1247 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:35:08,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87481 states. [2018-07-24 12:35:09,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87481 to 87478. [2018-07-24 12:35:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87478 states. [2018-07-24 12:35:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87478 states to 87478 states and 95705 transitions. [2018-07-24 12:35:09,184 INFO L78 Accepts]: Start accepts. Automaton has 87478 states and 95705 transitions. Word has length 622 [2018-07-24 12:35:09,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:09,185 INFO L471 AbstractCegarLoop]: Abstraction has 87478 states and 95705 transitions. [2018-07-24 12:35:09,185 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:35:09,185 INFO L276 IsEmpty]: Start isEmpty. Operand 87478 states and 95705 transitions. [2018-07-24 12:35:09,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2018-07-24 12:35:09,212 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:09,213 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:09,213 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:09,213 INFO L82 PathProgramCache]: Analyzing trace with hash -625710656, now seen corresponding path program 1 times [2018-07-24 12:35:09,214 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:09,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:09,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:09,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:09,215 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 70 proven. 461 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2018-07-24 12:35:10,619 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:10,619 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:35:10,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:10,626 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:10,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2018-07-24 12:35:11,424 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2018-07-24 12:35:11,790 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:35:11,790 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [13] total 14 [2018-07-24 12:35:11,790 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:35:11,791 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:35:11,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:35:11,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:35:11,791 INFO L87 Difference]: Start difference. First operand 87478 states and 95705 transitions. Second operand 3 states. [2018-07-24 12:35:15,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:15,544 INFO L93 Difference]: Finished difference Result 171435 states and 187761 transitions. [2018-07-24 12:35:15,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:35:15,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 780 [2018-07-24 12:35:15,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:15,721 INFO L225 Difference]: With dead ends: 171435 [2018-07-24 12:35:15,721 INFO L226 Difference]: Without dead ends: 87478 [2018-07-24 12:35:15,824 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1576 GetRequests, 1562 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:35:15,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87478 states. [2018-07-24 12:35:16,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87478 to 87466. [2018-07-24 12:35:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87466 states. [2018-07-24 12:35:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87466 states to 87466 states and 94311 transitions. [2018-07-24 12:35:16,646 INFO L78 Accepts]: Start accepts. Automaton has 87466 states and 94311 transitions. Word has length 780 [2018-07-24 12:35:16,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:16,646 INFO L471 AbstractCegarLoop]: Abstraction has 87466 states and 94311 transitions. [2018-07-24 12:35:16,646 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:35:16,646 INFO L276 IsEmpty]: Start isEmpty. Operand 87466 states and 94311 transitions. [2018-07-24 12:35:16,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2018-07-24 12:35:16,686 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:16,686 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:16,687 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:16,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1483591692, now seen corresponding path program 1 times [2018-07-24 12:35:16,687 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:16,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:16,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:16,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:16,688 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2018-07-24 12:35:17,982 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:35:17,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:35:17,983 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:35:17,984 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:35:17,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:35:17,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:35:17,985 INFO L87 Difference]: Start difference. First operand 87466 states and 94311 transitions. Second operand 4 states. [2018-07-24 12:35:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:24,554 INFO L93 Difference]: Finished difference Result 225468 states and 246883 transitions. [2018-07-24 12:35:24,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:35:24,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 920 [2018-07-24 12:35:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:24,810 INFO L225 Difference]: With dead ends: 225468 [2018-07-24 12:35:24,810 INFO L226 Difference]: Without dead ends: 139414 [2018-07-24 12:35:24,941 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:35:25,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139414 states. [2018-07-24 12:35:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139414 to 137998. [2018-07-24 12:35:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137998 states. [2018-07-24 12:35:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137998 states to 137998 states and 147867 transitions. [2018-07-24 12:35:27,013 INFO L78 Accepts]: Start accepts. Automaton has 137998 states and 147867 transitions. Word has length 920 [2018-07-24 12:35:27,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:27,014 INFO L471 AbstractCegarLoop]: Abstraction has 137998 states and 147867 transitions. [2018-07-24 12:35:27,014 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:35:27,014 INFO L276 IsEmpty]: Start isEmpty. Operand 137998 states and 147867 transitions. [2018-07-24 12:35:27,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2018-07-24 12:35:27,132 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:27,133 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:27,134 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:27,134 INFO L82 PathProgramCache]: Analyzing trace with hash 97549022, now seen corresponding path program 1 times [2018-07-24 12:35:27,134 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:27,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:27,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:27,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:27,135 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 354 proven. 96 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2018-07-24 12:35:28,528 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:28,528 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:35:28,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:28,537 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:28,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 891 proven. 2 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-07-24 12:35:29,602 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 354 proven. 96 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2018-07-24 12:35:33,009 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:33,009 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:35:33,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:33,028 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:33,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 891 proven. 2 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-07-24 12:35:34,183 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 354 proven. 96 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2018-07-24 12:35:34,728 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:35:34,728 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:35:34,729 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:35:34,730 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:35:34,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:35:34,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:35:34,731 INFO L87 Difference]: Start difference. First operand 137998 states and 147867 transitions. Second operand 9 states. [2018-07-24 12:35:44,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:44,957 INFO L93 Difference]: Finished difference Result 267087 states and 286332 transitions. [2018-07-24 12:35:44,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 12:35:44,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1066 [2018-07-24 12:35:44,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:45,205 INFO L225 Difference]: With dead ends: 267087 [2018-07-24 12:35:45,205 INFO L226 Difference]: Without dead ends: 127050 [2018-07-24 12:35:45,376 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4282 GetRequests, 4263 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:35:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127050 states. [2018-07-24 12:35:46,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127050 to 121016. [2018-07-24 12:35:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121016 states. [2018-07-24 12:35:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121016 states to 121016 states and 126669 transitions. [2018-07-24 12:35:47,100 INFO L78 Accepts]: Start accepts. Automaton has 121016 states and 126669 transitions. Word has length 1066 [2018-07-24 12:35:47,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:47,101 INFO L471 AbstractCegarLoop]: Abstraction has 121016 states and 126669 transitions. [2018-07-24 12:35:47,101 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:35:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 121016 states and 126669 transitions. [2018-07-24 12:35:47,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1375 [2018-07-24 12:35:47,192 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:47,193 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:47,193 INFO L414 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:47,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2061326034, now seen corresponding path program 1 times [2018-07-24 12:35:47,194 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:47,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:47,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:47,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:47,195 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:47,929 WARN L169 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-07-24 12:35:49,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2260 backedges. 290 proven. 781 refuted. 0 times theorem prover too weak. 1189 trivial. 0 not checked. [2018-07-24 12:35:49,588 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:49,589 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:35:49,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:49,596 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:50,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2260 backedges. 1561 proven. 2 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-07-24 12:35:50,862 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2260 backedges. 296 proven. 291 refuted. 0 times theorem prover too weak. 1673 trivial. 0 not checked. [2018-07-24 12:35:51,602 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:51,602 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:35:51,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:51,619 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:52,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2260 backedges. 1561 proven. 2 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-07-24 12:35:53,089 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:53,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2260 backedges. 296 proven. 291 refuted. 0 times theorem prover too weak. 1673 trivial. 0 not checked. [2018-07-24 12:35:53,845 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:35:53,846 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 19 [2018-07-24 12:35:53,846 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:35:53,848 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 12:35:53,848 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 12:35:53,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-07-24 12:35:53,849 INFO L87 Difference]: Start difference. First operand 121016 states and 126669 transitions. Second operand 15 states. Received shutdown request... [2018-07-24 12:36:01,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-24 12:36:01,497 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:36:01,505 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:36:01,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:36:01 BoogieIcfgContainer [2018-07-24 12:36:01,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:36:01,506 INFO L168 Benchmark]: Toolchain (without parser) took 226049.49 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-07-24 12:36:01,508 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. [2018-07-24 12:36:01,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1795.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. [2018-07-24 12:36:01,509 INFO L168 Benchmark]: Boogie Procedure Inliner took 197.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:36:01,510 INFO L168 Benchmark]: Boogie Preprocessor took 632.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 882.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:36:01,511 INFO L168 Benchmark]: RCFGBuilder took 8251.77 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 551.0 MB). Peak memory consumption was 551.0 MB. Max. memory is 7.1 GB. [2018-07-24 12:36:01,512 INFO L168 Benchmark]: TraceAbstraction took 215166.82 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.8 GB in the beginning and 3.5 GB in the end (delta: -1.7 GB). Peak memory consumption was 670.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:36:01,521 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 1795.14 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 197.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 632.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 882.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8251.77 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 551.0 MB). Peak memory consumption was 551.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215166.82 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.8 GB in the beginning and 3.5 GB in the end (delta: -1.7 GB). Peak memory consumption was 670.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (121016states) and interpolant automaton (currently 21 states, 15 states before enhancement), while ReachableStatesComputation was computing reachable states (2335 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 215.0s OverallTime, 16 OverallIterations, 8 TraceHistogramMax, 160.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6333 SDtfs, 54404 SDslu, 3171 SDs, 0 SdLazy, 95002 SolverSat, 18964 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 114.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21407 GetRequests, 21150 SyntacticMatches, 30 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137998occurred in iteration=14, 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: 17.0s AutomataMinimizationTime, 15 MinimizatonAttempts, 14240 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 24.8s InterpolantComputationTime, 18496 NumberOfCodeBlocks, 18496 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 29004 ConstructedInterpolants, 0 QuantifiedInterpolants, 42294924 SizeOfPredicates, 11 NumberOfNonLiveVariables, 15041 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 50 InterpolantComputations, 14 PerfectInterpolantSequences, 26251/29797 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/Problem18_label31_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-36-01-545.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label31_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-36-01-545.csv Completed graceful shutdown