java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 10:36:43,509 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 10:36:43,512 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 10:36:43,529 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 10:36:43,529 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 10:36:43,531 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 10:36:43,532 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 10:36:43,534 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 10:36:43,537 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 10:36:43,539 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 10:36:43,540 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 10:36:43,540 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 10:36:43,543 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 10:36:43,544 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 10:36:43,546 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 10:36:43,549 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 10:36:43,550 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 10:36:43,552 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 10:36:43,554 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 10:36:43,562 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 10:36:43,563 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 10:36:43,566 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 10:36:43,571 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 10:36:43,571 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 10:36:43,571 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 10:36:43,573 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 10:36:43,574 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 10:36:43,575 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 10:36:43,576 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 10:36:43,580 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 10:36:43,581 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 10:36:43,581 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 10:36:43,581 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 10:36:43,582 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 10:36:43,583 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 10:36:43,585 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 10:36:43,586 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 10:36:43,612 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 10:36:43,613 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 10:36:43,613 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 10:36:43,614 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 10:36:43,614 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 10:36:43,614 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 10:36:43,614 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 10:36:43,615 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 10:36:43,615 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 10:36:43,616 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 10:36:43,616 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 10:36:43,616 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 10:36:43,617 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 10:36:43,617 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 10:36:43,617 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 10:36:43,617 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 10:36:43,617 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 10:36:43,618 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 10:36:43,618 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 10:36:43,618 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 10:36:43,618 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 10:36:43,618 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 10:36:43,618 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 10:36:43,619 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:36:43,619 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 10:36:43,619 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 10:36:43,619 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 10:36:43,619 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 10:36:43,620 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 10:36:43,620 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 10:36:43,620 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 10:36:43,620 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 10:36:43,620 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 10:36:43,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 10:36:43,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 10:36:43,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 10:36:43,687 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 10:36:43,687 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 10:36:43,688 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label33_true-unreach-call.c [2018-09-10 10:36:44,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c97f42d/b3d2444621934accadd6bad8001e85b5/FLAG7511a17e4 [2018-09-10 10:36:44,523 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 10:36:44,524 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label33_true-unreach-call.c [2018-09-10 10:36:44,569 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c97f42d/b3d2444621934accadd6bad8001e85b5/FLAG7511a17e4 [2018-09-10 10:36:44,590 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03c97f42d/b3d2444621934accadd6bad8001e85b5 [2018-09-10 10:36:44,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 10:36:44,608 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 10:36:44,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 10:36:44,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 10:36:44,617 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 10:36:44,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:36:44" (1/1) ... [2018-09-10 10:36:44,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a69133f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:36:44, skipping insertion in model container [2018-09-10 10:36:44,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:36:44" (1/1) ... [2018-09-10 10:36:44,989 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 10:36:46,150 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:36:46,171 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 10:36:46,917 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:36:47,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:36:47 WrapperNode [2018-09-10 10:36:47,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 10:36:47,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 10:36:47,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 10:36:47,074 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 10:36:47,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:36:47" (1/1) ... [2018-09-10 10:36:47,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:36:47" (1/1) ... [2018-09-10 10:36:47,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 10:36:47,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 10:36:47,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 10:36:47,231 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 10:36:47,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:36:47" (1/1) ... [2018-09-10 10:36:47,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:36:47" (1/1) ... [2018-09-10 10:36:47,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:36:47" (1/1) ... [2018-09-10 10:36:47,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:36:47" (1/1) ... [2018-09-10 10:36:47,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:36:47" (1/1) ... [2018-09-10 10:36:47,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:36:47" (1/1) ... [2018-09-10 10:36:47,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:36:47" (1/1) ... [2018-09-10 10:36:47,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 10:36:47,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 10:36:47,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 10:36:47,846 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 10:36:47,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:36:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:36:47,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 10:36:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 10:36:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 10:36:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 10:36:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 10:36:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 10:36:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 10:36:47,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 10:36:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 10:36:47,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 10:36:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 10:36:47,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 10:36:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 10:36:47,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 10:36:59,208 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 10:36:59,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:36:59 BoogieIcfgContainer [2018-09-10 10:36:59,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 10:36:59,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 10:36:59,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 10:36:59,214 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 10:36:59,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 10:36:44" (1/3) ... [2018-09-10 10:36:59,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c963ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:36:59, skipping insertion in model container [2018-09-10 10:36:59,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:36:47" (2/3) ... [2018-09-10 10:36:59,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c963ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:36:59, skipping insertion in model container [2018-09-10 10:36:59,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:36:59" (3/3) ... [2018-09-10 10:36:59,218 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label33_true-unreach-call.c [2018-09-10 10:36:59,228 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 10:36:59,238 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 10:36:59,315 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 10:36:59,316 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 10:36:59,316 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 10:36:59,316 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 10:36:59,317 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 10:36:59,317 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 10:36:59,317 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 10:36:59,317 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 10:36:59,317 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 10:36:59,379 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-09-10 10:36:59,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2018-09-10 10:36:59,432 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:36:59,434 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:36:59,436 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:36:59,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1576914420, now seen corresponding path program 1 times [2018-09-10 10:36:59,445 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:36:59,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:36:59,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:36:59,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:36:59,502 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:36:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:37:01,948 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:37:01,948 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 10:37:01,948 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:37:01,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:37:01,969 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:37:01,970 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:37:01,972 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-09-10 10:37:08,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:37:08,444 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-09-10 10:37:08,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:37:08,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 825 [2018-09-10 10:37:08,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:37:08,502 INFO L225 Difference]: With dead ends: 2647 [2018-09-10 10:37:08,502 INFO L226 Difference]: Without dead ends: 1738 [2018-09-10 10:37:08,514 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:37:08,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-09-10 10:37:08,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-09-10 10:37:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-09-10 10:37:08,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3145 transitions. [2018-09-10 10:37:08,683 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3145 transitions. Word has length 825 [2018-09-10 10:37:08,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:37:08,686 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3145 transitions. [2018-09-10 10:37:08,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:37:08,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3145 transitions. [2018-09-10 10:37:08,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2018-09-10 10:37:08,715 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:37:08,716 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:37:08,716 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:37:08,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1292778511, now seen corresponding path program 1 times [2018-09-10 10:37:08,717 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:37:08,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:37:08,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:08,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:37:08,719 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:37:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:09,651 WARN L175 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:37:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:37:10,776 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:37:10,777 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 10:37:10,777 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:37:10,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:37:10,780 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:37:10,780 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:37:10,780 INFO L87 Difference]: Start difference. First operand 1738 states and 3145 transitions. Second operand 3 states. [2018-09-10 10:37:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:37:17,802 INFO L93 Difference]: Finished difference Result 5140 states and 9418 transitions. [2018-09-10 10:37:17,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:37:17,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 834 [2018-09-10 10:37:17,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:37:17,826 INFO L225 Difference]: With dead ends: 5140 [2018-09-10 10:37:17,826 INFO L226 Difference]: Without dead ends: 3408 [2018-09-10 10:37:17,833 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:37:17,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2018-09-10 10:37:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3408. [2018-09-10 10:37:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2018-09-10 10:37:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 5907 transitions. [2018-09-10 10:37:17,937 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 5907 transitions. Word has length 834 [2018-09-10 10:37:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:37:17,940 INFO L480 AbstractCegarLoop]: Abstraction has 3408 states and 5907 transitions. [2018-09-10 10:37:17,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:37:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 5907 transitions. [2018-09-10 10:37:17,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2018-09-10 10:37:17,960 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:37:17,961 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:37:17,961 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:37:17,962 INFO L82 PathProgramCache]: Analyzing trace with hash -851984715, now seen corresponding path program 1 times [2018-09-10 10:37:17,962 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:37:17,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:37:17,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:17,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:37:17,964 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:37:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:18,459 WARN L175 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-10 10:37:18,812 WARN L175 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-10 10:37:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:37:19,201 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:37:19,201 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-10 10:37:19,201 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:37:19,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 10:37:19,203 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 10:37:19,203 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 10:37:19,204 INFO L87 Difference]: Start difference. First operand 3408 states and 5907 transitions. Second operand 7 states. [2018-09-10 10:37:20,340 WARN L175 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2018-09-10 10:37:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:37:28,862 INFO L93 Difference]: Finished difference Result 8740 states and 15234 transitions. [2018-09-10 10:37:28,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 10:37:28,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 847 [2018-09-10 10:37:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:37:28,902 INFO L225 Difference]: With dead ends: 8740 [2018-09-10 10:37:28,903 INFO L226 Difference]: Without dead ends: 5338 [2018-09-10 10:37:28,913 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-09-10 10:37:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2018-09-10 10:37:29,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 5223. [2018-09-10 10:37:29,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5223 states. [2018-09-10 10:37:29,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 8604 transitions. [2018-09-10 10:37:29,094 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 8604 transitions. Word has length 847 [2018-09-10 10:37:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:37:29,097 INFO L480 AbstractCegarLoop]: Abstraction has 5223 states and 8604 transitions. [2018-09-10 10:37:29,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 10:37:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 8604 transitions. [2018-09-10 10:37:29,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2018-09-10 10:37:29,120 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:37:29,121 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:37:29,122 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:37:29,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1522148412, now seen corresponding path program 1 times [2018-09-10 10:37:29,122 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:37:29,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:37:29,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:29,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:37:29,124 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:37:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:29,485 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 7 [2018-09-10 10:37:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:37:30,021 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:37:30,021 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:37:30,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:30,032 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:37:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:30,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:37:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:37:31,030 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:37:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:37:32,030 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:37:32,030 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:37:32,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:32,051 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:37:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:32,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:37:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:37:33,846 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:37:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:37:34,655 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:37:34,656 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 16 [2018-09-10 10:37:34,656 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:37:34,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-10 10:37:34,661 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-10 10:37:34,662 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-09-10 10:37:34,662 INFO L87 Difference]: Start difference. First operand 5223 states and 8604 transitions. Second operand 10 states. [2018-09-10 10:37:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:37:44,839 INFO L93 Difference]: Finished difference Result 16353 states and 28863 transitions. [2018-09-10 10:37:44,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-10 10:37:44,840 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 863 [2018-09-10 10:37:44,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:37:44,905 INFO L225 Difference]: With dead ends: 16353 [2018-09-10 10:37:44,905 INFO L226 Difference]: Without dead ends: 11136 [2018-09-10 10:37:44,927 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3472 GetRequests, 3443 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2018-09-10 10:37:44,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11136 states. [2018-09-10 10:37:45,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11136 to 10801. [2018-09-10 10:37:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10801 states. [2018-09-10 10:37:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10801 states to 10801 states and 16239 transitions. [2018-09-10 10:37:45,288 INFO L78 Accepts]: Start accepts. Automaton has 10801 states and 16239 transitions. Word has length 863 [2018-09-10 10:37:45,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:37:45,288 INFO L480 AbstractCegarLoop]: Abstraction has 10801 states and 16239 transitions. [2018-09-10 10:37:45,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-10 10:37:45,289 INFO L276 IsEmpty]: Start isEmpty. Operand 10801 states and 16239 transitions. [2018-09-10 10:37:45,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2018-09-10 10:37:45,332 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:37:45,333 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:37:45,333 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:37:45,334 INFO L82 PathProgramCache]: Analyzing trace with hash 304149223, now seen corresponding path program 1 times [2018-09-10 10:37:45,334 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:37:45,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:37:45,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:45,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:37:45,336 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:37:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 75 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-10 10:37:46,302 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:37:46,302 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:37:46,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:46,313 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:37:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:46,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:37:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-10 10:37:47,101 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:37:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-10 10:37:48,031 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:37:48,032 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:37:48,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:37:48,049 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:37:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:37:48,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:37:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-10 10:37:49,398 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:37:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-10 10:37:49,939 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:37:49,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-10 10:37:49,940 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:37:49,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:37:49,942 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:37:49,943 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-10 10:37:49,943 INFO L87 Difference]: Start difference. First operand 10801 states and 16239 transitions. Second operand 9 states. [2018-09-10 10:38:08,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:38:08,425 INFO L93 Difference]: Finished difference Result 42937 states and 75683 transitions. [2018-09-10 10:38:08,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-10 10:38:08,425 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 890 [2018-09-10 10:38:08,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:38:08,599 INFO L225 Difference]: With dead ends: 42937 [2018-09-10 10:38:08,599 INFO L226 Difference]: Without dead ends: 32142 [2018-09-10 10:38:08,659 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3608 GetRequests, 3568 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2018-09-10 10:38:08,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32142 states. [2018-09-10 10:38:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32142 to 31575. [2018-09-10 10:38:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31575 states. [2018-09-10 10:38:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31575 states to 31575 states and 43803 transitions. [2018-09-10 10:38:09,621 INFO L78 Accepts]: Start accepts. Automaton has 31575 states and 43803 transitions. Word has length 890 [2018-09-10 10:38:09,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:38:09,622 INFO L480 AbstractCegarLoop]: Abstraction has 31575 states and 43803 transitions. [2018-09-10 10:38:09,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:38:09,622 INFO L276 IsEmpty]: Start isEmpty. Operand 31575 states and 43803 transitions. [2018-09-10 10:38:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2018-09-10 10:38:09,747 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:38:09,748 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:38:09,748 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:38:09,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1006982877, now seen corresponding path program 1 times [2018-09-10 10:38:09,749 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:38:09,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:38:09,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:38:09,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:38:09,750 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:38:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:38:10,133 WARN L175 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:38:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 164 proven. 92 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-10 10:38:10,873 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:38:10,873 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:38:10,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:38:10,883 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:38:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:38:11,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:38:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-09-10 10:38:12,223 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:38:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 164 proven. 92 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-10 10:38:12,774 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 10:38:12,774 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 10:38:12,774 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:38:12,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:38:12,776 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:38:12,776 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-10 10:38:12,776 INFO L87 Difference]: Start difference. First operand 31575 states and 43803 transitions. Second operand 5 states. [2018-09-10 10:38:20,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:38:20,128 INFO L93 Difference]: Finished difference Result 80208 states and 114364 transitions. [2018-09-10 10:38:20,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 10:38:20,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 998 [2018-09-10 10:38:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:38:20,296 INFO L225 Difference]: With dead ends: 80208 [2018-09-10 10:38:20,297 INFO L226 Difference]: Without dead ends: 48639 [2018-09-10 10:38:20,379 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2005 GetRequests, 1990 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-10 10:38:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48639 states. [2018-09-10 10:38:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48639 to 45956. [2018-09-10 10:38:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45956 states. [2018-09-10 10:38:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45956 states to 45956 states and 60151 transitions. [2018-09-10 10:38:21,278 INFO L78 Accepts]: Start accepts. Automaton has 45956 states and 60151 transitions. Word has length 998 [2018-09-10 10:38:21,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:38:21,279 INFO L480 AbstractCegarLoop]: Abstraction has 45956 states and 60151 transitions. [2018-09-10 10:38:21,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:38:21,279 INFO L276 IsEmpty]: Start isEmpty. Operand 45956 states and 60151 transitions. [2018-09-10 10:38:21,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1169 [2018-09-10 10:38:21,352 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:38:21,353 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:38:21,353 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:38:21,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2026710175, now seen corresponding path program 1 times [2018-09-10 10:38:21,354 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:38:21,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:38:21,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:38:21,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:38:21,356 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:38:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:38:22,145 WARN L175 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-10 10:38:22,464 WARN L175 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 10:38:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 388 proven. 50 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-09-10 10:38:23,192 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:38:23,192 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:38:23,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:38:23,200 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:38:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:38:23,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:38:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-10 10:38:24,582 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:38:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-10 10:38:25,477 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:38:25,477 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 10:38:25,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:38:25,493 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:38:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:38:26,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:38:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-10 10:38:27,394 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:38:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-10 10:38:28,068 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:38:28,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 16 [2018-09-10 10:38:28,069 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:38:28,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-10 10:38:28,071 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-10 10:38:28,071 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-09-10 10:38:28,071 INFO L87 Difference]: Start difference. First operand 45956 states and 60151 transitions. Second operand 10 states. [2018-09-10 10:38:46,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:38:46,879 INFO L93 Difference]: Finished difference Result 130271 states and 177983 transitions. [2018-09-10 10:38:46,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-10 10:38:46,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1168 [2018-09-10 10:38:46,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:38:47,183 INFO L225 Difference]: With dead ends: 130271 [2018-09-10 10:38:47,183 INFO L226 Difference]: Without dead ends: 84321 [2018-09-10 10:38:47,303 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4785 GetRequests, 4714 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=863, Invalid=4107, Unknown=0, NotChecked=0, Total=4970 [2018-09-10 10:38:47,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84321 states. [2018-09-10 10:38:49,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84321 to 83339. [2018-09-10 10:38:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83339 states. [2018-09-10 10:38:49,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83339 states to 83339 states and 103057 transitions. [2018-09-10 10:38:49,163 INFO L78 Accepts]: Start accepts. Automaton has 83339 states and 103057 transitions. Word has length 1168 [2018-09-10 10:38:49,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:38:49,164 INFO L480 AbstractCegarLoop]: Abstraction has 83339 states and 103057 transitions. [2018-09-10 10:38:49,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-10 10:38:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 83339 states and 103057 transitions. [2018-09-10 10:38:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1480 [2018-09-10 10:38:49,303 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:38:49,304 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:38:49,304 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:38:49,305 INFO L82 PathProgramCache]: Analyzing trace with hash -622319422, now seen corresponding path program 1 times [2018-09-10 10:38:49,305 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:38:49,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:38:49,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:38:49,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:38:49,306 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:38:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:38:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 657 proven. 355 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2018-09-10 10:38:51,178 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:38:51,178 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 10:38:51,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:38:51,185 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:38:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:38:51,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:38:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 478 proven. 2 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2018-09-10 10:38:53,032 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:38:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 674 proven. 286 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2018-09-10 10:38:54,299 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:38:54,300 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 10:38:54,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:38:54,315 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:38:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:38:55,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:38:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 478 proven. 2 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2018-09-10 10:38:56,744 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:38:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 674 proven. 286 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (10)] Forcibly destroying the process [2018-09-10 10:38:58,099 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:38:58,100 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 18 [2018-09-10 10:38:58,100 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:38:58,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-10 10:38:58,103 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-10 10:38:58,103 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-09-10 10:38:58,104 INFO L87 Difference]: Start difference. First operand 83339 states and 103057 transitions. Second operand 14 states. [2018-09-10 10:39:43,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:39:43,771 INFO L93 Difference]: Finished difference Result 340785 states and 455329 transitions. [2018-09-10 10:39:43,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-10 10:39:43,771 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1479 [2018-09-10 10:39:43,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:39:44,648 INFO L225 Difference]: With dead ends: 340785 [2018-09-10 10:39:44,649 INFO L226 Difference]: Without dead ends: 256389 [2018-09-10 10:39:44,795 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6028 GetRequests, 5956 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=876, Invalid=3680, Unknown=0, NotChecked=0, Total=4556 [2018-09-10 10:39:45,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256389 states. [2018-09-10 10:39:49,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256389 to 251775. [2018-09-10 10:39:49,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251775 states. [2018-09-10 10:39:49,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251775 states to 251775 states and 305584 transitions. [2018-09-10 10:39:49,556 INFO L78 Accepts]: Start accepts. Automaton has 251775 states and 305584 transitions. Word has length 1479 [2018-09-10 10:39:49,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:39:49,557 INFO L480 AbstractCegarLoop]: Abstraction has 251775 states and 305584 transitions. [2018-09-10 10:39:49,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-10 10:39:49,557 INFO L276 IsEmpty]: Start isEmpty. Operand 251775 states and 305584 transitions. [2018-09-10 10:39:50,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1486 [2018-09-10 10:39:50,046 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:39:50,047 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:39:50,048 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:39:50,048 INFO L82 PathProgramCache]: Analyzing trace with hash -736606625, now seen corresponding path program 1 times [2018-09-10 10:39:50,049 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:39:50,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:39:50,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:39:50,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:39:50,050 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:39:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:39:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 979 proven. 336 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-09-10 10:39:57,384 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:39:57,384 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 10:39:57,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:39:57,398 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:39:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:39:58,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:39:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-09-10 10:39:58,914 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:39:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-09-10 10:39:59,987 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:39:59,987 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:40:00,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:40:00,002 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:40:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:40:01,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:40:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-09-10 10:40:02,269 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:40:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-09-10 10:40:03,364 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:40:03,365 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5, 5, 5] total 25 [2018-09-10 10:40:03,365 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:40:03,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-10 10:40:03,368 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-10 10:40:03,368 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2018-09-10 10:40:03,369 INFO L87 Difference]: Start difference. First operand 251775 states and 305584 transitions. Second operand 19 states. [2018-09-10 10:40:03,763 WARN L175 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2018-09-10 10:40:04,134 WARN L175 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2018-09-10 10:40:05,070 WARN L175 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2018-09-10 10:40:05,825 WARN L175 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-09-10 10:40:06,303 WARN L175 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2018-09-10 10:40:08,334 WARN L175 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2018-09-10 10:40:08,910 WARN L175 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-09-10 10:40:09,253 WARN L175 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2018-09-10 10:40:10,237 WARN L175 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-09-10 10:40:11,193 WARN L175 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2018-09-10 10:40:12,140 WARN L175 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2018-09-10 10:40:12,755 WARN L175 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2018-09-10 10:40:13,345 WARN L175 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-09-10 10:40:15,149 WARN L175 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2018-09-10 10:40:15,481 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2018-09-10 10:40:16,632 WARN L175 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2018-09-10 10:40:18,871 WARN L175 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2018-09-10 10:40:20,006 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2018-09-10 10:40:21,033 WARN L175 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-09-10 10:40:21,287 WARN L175 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2018-09-10 10:40:23,909 WARN L175 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2018-09-10 10:40:25,003 WARN L175 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2018-09-10 10:40:26,634 WARN L175 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-09-10 10:40:27,025 WARN L175 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2018-09-10 10:40:27,537 WARN L175 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2018-09-10 10:40:28,098 WARN L175 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2018-09-10 10:40:28,487 WARN L175 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-09-10 10:40:28,712 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2018-09-10 10:40:29,368 WARN L175 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2018-09-10 10:40:29,579 WARN L175 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2018-09-10 10:40:30,667 WARN L175 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2018-09-10 10:40:31,731 WARN L175 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2018-09-10 10:40:32,017 WARN L175 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-09-10 10:40:32,234 WARN L175 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2018-09-10 10:40:32,889 WARN L175 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 Received shutdown request... [2018-09-10 10:40:32,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-10 10:40:32,966 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 10:40:32,972 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 10:40:32,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 10:40:32 BoogieIcfgContainer [2018-09-10 10:40:32,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 10:40:32,973 INFO L168 Benchmark]: Toolchain (without parser) took 228370.25 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -933.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-10 10:40:32,975 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 10:40:32,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2463.78 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: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-09-10 10:40:32,976 INFO L168 Benchmark]: Boogie Procedure Inliner took 156.30 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-10 10:40:32,977 INFO L168 Benchmark]: Boogie Preprocessor took 615.34 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 852.0 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 85.0 MB. Max. memory is 7.1 GB. [2018-09-10 10:40:32,978 INFO L168 Benchmark]: RCFGBuilder took 11363.47 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 174.6 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -55.6 MB). Peak memory consumption was 707.4 MB. Max. memory is 7.1 GB. [2018-09-10 10:40:32,978 INFO L168 Benchmark]: TraceAbstraction took 213762.19 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -12.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-09-10 10:40:32,988 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 2463.78 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: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 156.30 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 615.34 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 852.0 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 85.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11363.47 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 174.6 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -55.6 MB). Peak memory consumption was 707.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213762.19 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -12.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4793]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4793). Cancelled while BasicCegarLoop was constructing difference of abstraction (251775states) and FLOYD_HOARE automaton (currently 66 states, 19 states before enhancement), while ReachableStatesComputation was computing reachable states (22955 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 213.6s OverallTime, 9 OverallIterations, 7 TraceHistogramMax, 155.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1768 SDtfs, 66857 SDslu, 3401 SDs, 0 SdLazy, 91418 SolverSat, 33845 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 111.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25984 GetRequests, 25649 SyntacticMatches, 28 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5818 ImplicationChecksByTransitivity, 19.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=251775occurred in iteration=8, 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: 9.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 9296 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.7s SsaConstructionTime, 7.9s SatisfiabilityAnalysisTime, 26.8s InterpolantComputationTime, 22157 NumberOfCodeBlocks, 22157 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 34894 ConstructedInterpolants, 0 QuantifiedInterpolants, 78455647 SizeOfPredicates, 3 NumberOfNonLiveVariables, 18079 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 31 InterpolantComputations, 4 PerfectInterpolantSequences, 19180/20730 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/Problem04_label33_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_10-40-33-014.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label33_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_10-40-33-014.csv Completed graceful shutdown